Ann S. Almgren

I. Barrio Sanchez, A. S. Almgren, J. B. Bell, M.T. Henry de Frahan, W. Zhang, A New Re-redistribution Scheme for Weighted State Redistribution with Adaptive Mesh Refinement, J. Comp. Phys., Volume 504, 1 May 2024. [arxiv], [doi]

2023

Bruce J. Palmer, Ann S. Almgren, Connah G.M. Johnson, Andrew T Myers, and William R. Cannon, BMX: Biological Modelling and interface eXchange, Nature Scientific Reports, 13, July 2023. [doi]

Ann Almgren, Aaron Lattanzi, Riyaz Haque, Pankaj Jha, Branko Kosovic, Jeffrey Mirocha, Bruce Perry, Eliot Quon, Michael Sanders, David Wiersema, Donald Willcox, Xingqiu Yuan, Weiqun Zhang, ERF: Energy Research and Forecasting, Journal of Open Source Software, 8(87), 5202,, 2023. [doi]

Roberto Porcu, Jordan Musser, Ann S. Almgren, John B. Bell, William D. Fullmer, Deepak Rangarajan, MFIX-Exa: CFD-DEM simulations of thermodynamics and chemical reactions in multiphase flows,, Chemical Engineering Science, 2023.

Yadong Zeng, Han Liu, Qiang Gao, Ann Almgren, Amneet Pal Singh Bhalla, Lian Shen, A consistent adaptive level set framework for incompressible two-phase flows with high density ratios and high Reynolds numbers,, J. Comp. Phys., vol. 478, 2023.

2022

Jon Rood, Marc Henry de Frahan, Marc Day, Hariswaran Sitaraman, Shashank Yellapantula, Bruce Perry, Ray Grout, Ann Almgren, Weiqun Zhang, John B. Bell, Jacqueline Chen, PeleC: An Adaptive Mesh Refinement Solver for Compressible Reacting Flows, International Journal of High Performance Computing Applications, 2022. [doi]

Soumya Dutta, Terece Turton, David Rogers, Jordan M. Musser, James Ahrens, Ann S. Almgren, In Situ Feature Analysis for Large-Scale Multiphase Flow Simulations,, Journal of Computational Science, 2022.

A. Giuliani, A.S. Almgren, J.B. Bell, M.J. Berger, M.T. Henry de Frahan, D. Rangarajan, Weighted State Redistribution Algorithms for Embedded Boundary Methods, J. Comp. Phys., Vol. 464, Sept. 2022.

Mu-Hua Chien, Olivier M. Pauluis, Ann S. Almgren, Hurricane-like Vortices in Conditionally Unstable Moist Convection, Journal of Advances in Modeling Earth Systems, May 2022. [ESSOAr]

V. Gulizzi, A. S. Almgren, John B. Bell "A coupled discontinuous Galerkin-Finite Volume framework for solving gas dynamics over embedded geometries", J. Comp. Phys., 450, 2022. [arxiv]

2021

Jean Sexton, Zarija Lukic, Ann Almgren, Chris Daley, Brian Friesen, Andrew Myers, and Weiqun Zhang, Nyx: A Massively Parallel AMR Code for Computational Cosmology, Journal of Open Source Software, 6(63), 3068, 2021. [doi]

William D. Fullmer, Roberto Porcu, Jordan Musser, Ann S. Almgren, Ishan Srivastava, The divergence of nearby trajectories in soft-sphere DEM, Particuology, to appear.

Weiqun Zhang, Andrew Myers, Kevin Gott, Ann Almgren and John Bell, AMReX: Block-Structured Adaptive Mesh Refinement for Multiphysics Applications, International Journal of High Performance Computing Applications, 35(6):508-526, 2021. [IJHPCA] [doi]

Jordan Musser, Ann S Almgren, William D Fullmer, Oscar Antepara, John B Bell, Johannes Blaschke,Kevin Gott, Andrew Myers, Roberto Porcu, Deepak Rangarajan, Michele Rosso, Weiqun Zhang, and Madhava Syamlal, MFIX:Exa: A Path Towards Exascale CFD-DEM Simulations, International Journal of High Performance Computing Applications, April 16, 2021. [IJHPCA] [doi]

J-L Vay, Ann Almgren, LD Amorim, John Bell, L Fedeli, L Ge, K Gott, DP Grote, M Hogan, A Huebl, R Jambunathan, R Lehe, A Myers, C Ng, M Rowan, O Shapoval, M Thevenet, H Vincenti, E Yang, N Zaim, W Zhang, Y Zhao and E Zoni Modeling of a chain of three plasma accelerator stages with the WarpX electromagnetic PIC code on GPUs, Physics of Plasmas, 28(2), 2021. [doi]

Brandon Runnels, Vinamra Agrawal, Weiqun Zhang and Ann Almgren, Massively parallel finite difference elasticity using a block-structured adaptive mesh refinement with a geometric multigrid solver, J. Comp. Phys., 427, 2021. [doi] [arxiv].

Andrew Myers, Ann Almgren, Diana Almorim, John Bell, Luca Fedeli, Lixin Ge, Kevin Gott, David Grote, Mark Hogan, Axel Huebl, Revathi Jambunathan, Remi Lehe, Cho Ng, Michael Rowan, Olga Shapoval, Maxence Thevenet, Jean-Luc Vay, Henri Vincenti, Eloise Yang, Neil Zaim, Weiqun Zhang, Yin Zhao, Edoardo Zoni, Porting WarpX to GPU-accelerated platforms, Parallel Computing, 2021.

2020

Max P. Katz, Ann S. Almgren, Maria Barrios Sazo, Kiran Eiden, Kevin Gott, Alice Harpole, Jean M. Sexton, Don E. Willcox, Weiqun Zhang, and Michael Zingale, Preparing nuclear astrophysics for exascale, SC20: Proceedings of the International Conference for High Performance Computing, Networking, Storage and Analysis, p. 1, 2020

Ann Almgren, Maria Barrios Sazo, John Bell, Alice Harpole, Max Katz, Jean Sexton, Donald Willcox, Weiqun Zhang, and Michael Zingale, CASTRO: A Massively Parallel Compressible Astrophysics Simulation Code, Journal of Open Source Software, 5, 54, 2513, 2020

J-L Vay, Ann Almgren, LD Amorim, John Bell, L Ge, K Gott, DP Grote, M Hogan, A Huebl, R Jambunathan, R Lehe, A Myers, C Ng, J Park, M Rowan, O Shapoval, M Thevenet, W Zhang, Y Zhao, and E Zoni Toward the modeling of chains of plasma accelerator stages with WarpX, Journal of Physics: Conference Series, 1596, 1, 012059, 2020

A. Biswas, J. Ahrens, S. Dutta, A. Almgren, J. Musser, and T. Turton, Feature Analysis, Tracking, and Data Reduction: An Application to Multiphase Reactor Simulation MFiX-Exa for In-Situ Use Case, Computing in Science & Engineering, doi: 10.1109/MCSE.2020.3016927, 2020. [doi]

F. Alexander, A. Almgren, J. Bell, A. Bhattacharjee, J. Chen, P. Colella, D. Daniel, J. DeSlippe, L. Diachin, E. Draeger, A. Dubey, T. Dunning, T. Evans, I. Foster, M. Francois, T. Germann, M. Gordon, S. Habib, M. Halappanavar, S. Hamilton, W. Hart, Z. Huang, A. Hungerford, D. Kasen, P. Kent, T. Kolev, D. Kothe, A. Kronfeld, Y. Luo, P. Mackenzie, D. McCallen, B. Messer, S. Mniszewski, C. Oehmen, A. Perazzo, D. Perez, D. Richard, W. Rider, R. Rieben, K. Roche, A. Siegel, M. Sprague, C. Steefel, R. Stevens, M. Syamlal, M. Taylor, J. Turner, J.-L. Vay, A. Voter, T. Windus and K. Yelick, "Exascale applications: skin in the game", Phil. Trans. R. Soc. A, 2020. [doi].

2019

D. Fan, A. Nonaka, A. S. Almgren, D. E. Willcox, A. Harpole, and M. Zingale, MAESTROeX: A Massively Parallel Low Mach Number Astrophysical Solver Journal of Open Source Software, 4, 44, 1757, 2019. [link]

D. Fan, A. Nonaka, A. S. Almgren, A. Harpole, and M. Zingale, MAESTROeX: A Massively Parallel Low Mach Number Astrophysical Solver Astrophysical Journal, 887, 2, 2019. [link]

Muhammad Nufail Farooqi, Tan Nguyen, Weiqun Zhang, Ann Almgren, John Shalf, and Didem Unat, "Asynchronous AMR on Multi-GPUs", ISC High Performance conference: REFAC'19, 2019. [springer].

Knut Sverdrup, Ann S. Almgren, and Nikolaos Nikiforakis, "An embedded boundary approach for efficient simulations of viscoplastic fluids in three dimensions", Physics of Fluids, 2019 [doi].

W. Zhang, A. Almgren, V. Beckner, J. Bell, J. Blaschke, C Chan, M. Day, B. Friesen, K. Gott, D. Graves, M. Katz, A. Myers T. Nguyen, A. Nonaka, M. Rosso, S. Williams and M. Zingale, AMReX: a framework for block-structured adaptive mesh refinement, Journal of Open Source Software, 4(37), 1370, 2019. [doi]

2018

M. N. Farooqi, T. Nguyen, W. Zhang, A. S. Almgren, J. Shalf, and D. Unat, Phase asynchronous AMR execution for productive and performant astrophysical flows, Proceedings of the International Conference for High Performance Computing, Networking, Storage, and Analysis, 2018, p. 70

Knut Sverdrup, Nikolaos Nikiforakis, and Ann S. Almgren, "Highly parallelisable simulations of time-dependent viscoplastic fluid flow simulations with structured adaptive mesh refinement", Physics of Fluids, 30:9, 2018. Named Editor's Pick. [doi]

J.-L. Vay, A. Almgren, J. Bell, L. Ge, D. P. Grote, M. Hogan, O. Kononenko, R. Lehe, A. Myers, C. Ng, J. Park, R. Ryne, O. Shapoval, M. Thevenet, W. Zhang "Warp-X: A new exascale computing platform for beam-plasma simulations," Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2018. [arxiv]

E. Motheau, M. Duarte, A. Almgren, J. Bell, "A Hybrid Adaptive Low-Mach-Number/Compressible Method: Euler Equations," Journal of Computational Physics, Volume 372, Pages 1027-1047, 2018. [pdf].

M. Zingale, A. S. Almgren, M. G. Barrios Sazo, V. E. Beckner, J. B. Bell, B. Friesen, A. M. Jacobs, M. P. Katz, C. M. Malone, A. J. Nonaka, D. E. Willcox, and W. Zhang, "Meeting the Challenges of Modeling Astrophysical Thermonuclear Explosions: Castro, Maestro, and the AMReX Astrophysics Suite", J. Phys.: Conf. Ser. 1031, 2018. [arxiv] [iop]

2017

Muhammad Nufail Farooqi, Didem Unat, Tan Nguyen, Weiqun Zhang, Ann Almgren and John Shalf, "Nonintrusive AMR Asynchrony for Communication Optimization," Euro-Par 2017 [pdf]

B. Bastem, D. Unat, W. Zhang, A. Almgren, and J. Shalf, "Overlapping Data Transfers with Computation on GPU with Tiles", 2017 46th International Conference on Parallel Processing (ICPP), pp. 171-180 [link]

Emmanuel Motheau, Ann Almgren, John Bell, "Navier-Stokes Characteristic Boundary Conditions Using Ghost Cells," AIAA J., Vol. 55, No. 10 : pp. 3399-3408, 2017 [doi]

E. Motheau, A. Almgren and J.B. Bell. "Navier-Stokes Characteristic Boundary Conditions Using Ghost Cells", 23rd AIAA Computational Fluid Dynamics, Denver, CO, USA, June 6 2017. [pdf]

E. Motheau, M. Duarte, A. Almgren and J.B. Bell. " A Hybrid Adaptive Low-Mach-Number/Compressible Method for the Euler Equations", 23rd AIAA/CEAS Aeroacoustics Conference, Denver, CO, USA, June 5 2017. [pdf]

2016

Cy Chan, John Bachan, Joseph Kenny, Jeremiah Wilke, Vincent Beckner, Ann Almgren and John Bell "Topology-Aware Performance Optimization and Modeling of Adaptive Mesh Refinement Codes for Exascale," COMHPC 2016 - SC16 Workshop on Communication Optimization in High Performance Computing, Salt Lake City, UT, November 18, 2016. [pdf]

T. Nguyen, D. Unat, W. Zhang, A. Almgren, N. Farooqi, J. Shalf, "Perilla: Metadata-based optimizations of an asynchronous runtime for adaptive mesh refinement," SC '16 Proceedings of the International Conference for High Performance Computing, Networking, Storage and Analysis, p. 81, 2016

Brian Friesen, Ann Almgren, Zarija Lukic, Gunther Weber, Dmitriy Morozov, Vincent Beckner, Marcus Day, "In situ and in-transit analysis of cosmological simulations," Computational Astrophysics and Cosmology, 3:4, 2016 [pdf]

D. Unat, T. Nguyen, W. Zhang, M. N. Farooqi, B. Bastem, G. Michelogiannakis, A. Almgren, and J. Shalf, "TiDA: High-Level Programming Abstractions for Data Locality Management," Supercomputing, High Performance Computing: 31st International Conference, ISC High Performance 2016, Springer, pp. 116-135.

A.M. Jacobs, M. Zingale, A. Nonaka, A.S. Almgren, J.B. Bell, "Low Mach Number Modeling of Convection in Helium Shells on Sub-Chandrasekhar White Dwarfs II: Bulk Properties of Simple Models," Astrophysical Journal, 827, 84, 2016. [iop].

Weiqun Zhang, Ann Almgren, Marcus Day, Tan Nguyen, John Shalf, Didem Unat, "BoxLib with Tiling: An AMR Software Framework" SIAM J. Scientific Computing, 38(5):S156-S172 , 2016 [arxiv]

Max P. Katz, Michale Zingale, Alan C. Calder, F. Douglas Swesty, Ann S. Almgren, Weiqun Zhang, "White Dwarf Mergers on Adaptive Meshes. I. Methodology and Code Verification", Astrophysical Journal, 819, 94, 2016. [arxiv]

W. Schmidt, J.F. Engels, J.C. Niemeyer, A.S. Almgren, "Hot and Turbulent Gas in Clusters," Monthly Notices of the Royal Astronomical Society, 459(1), March 2016 [arxiv].

2015

Zarija Lukic, Casey Stark, Peter Nugent, Martin White, Avery Meiksin, Ann Almgren, "The Lyman-alpha forest in optically-thin hydrodynamical simulations," Monthly Notices of the Royal Astronomical Society, 446, 3697-3724, 2015. [arxiv].

W. Schmidt, J. Schulz, L. Iapichino, A.S. Almgren, " Influence of adaptive mesh refinement and the hydro solver on shear-induced mass stripping in a minor merger scenario," Astronomy and Computing, 2015 [arxiv].

M. Zingale, C. M. Malone, A. Nonaka, A. S. Almgren, and J. B. Bell, "Comparisons of Two- and Three-Dimensional Convection in Type I X-ray Bursts," Astrophysical Journal, 807, 60, 2015 [arxiv].

Max Duarte, Ann S. Almgren, and John B. Bell, "A Low Mach Number Model for Moist Atmospheric Flows," , Journal of the Atmospheric Sciences, 72(4), pp. 1605-1620, 2015 [arxiv].

M. Zingale, A. Jacobs, A. Almgren, J. Bell, A. Nonaka, C. Malone, S. Woosley "Understanding Ignition in Type Ia Supernovae", 25rd International Colloquium on the Dynamics of Explosions and Reactive Systems, Leeds, UK, August 2-7, 2015.

Ke-Jung Chen, Alexander Heger, Stan Woosley, Ann Almgren and Daniel J. Whalen, "Pair-Instability Supernovae of Non-Zero Metallicity Stars," Numerical Modeling of Space Plasma Flows, ASTRONUM-2014, 498, 2015. [arxiv].

2014

Ann Almgren, John Bell, Andy Nonaka and Michael Zingale, "Low Mach Number Modeling of Stratified Flows," Finite Volumes for Complex Applications VII -- Methods and Theoretical Aspects, Springer Proceedings in Mathematics and Statistics, eds. J. Fuhrmann, M. Ohlberger, C. Rohde, Berlin, June 2014.

A. Dubey, A. Almgren, J. Bell, M. Berzins, S. Brandt, G. Bryan, P. Colella, D. Graves, M. Lijewski, F. Loffler, B. O'Shea, E. Schnetter, B. Van Straalen, K. Weide "A Survey of High Level Frameworks in Block-Structured Adaptive Mesh Refinement Packages", Journal of Parallel and Distributed Computing, 74, pp. 3217-3227, 2014 [arxiv] [doi].

H. Braun, W. Schmidt, J.C. Niemeyer, A.S. Almgren, "Large-eddy simulations of isolated disk galaxies with thermal and turbulent feedback," Monthly Notices of the Royal Astronomical Society, 442, pp. 3407-3426, 2014.

C. M. Malone, M. Zingale, A. Nonaka, A. S. Almgren, and J. B. Bell, "Multidimensional Modeling of Type I X-ray Bursts. II. Two-Dimensional Convection in a Mixed H/He Accretor", Astrophysical Journal, 788, 115, 2014. [arxiv]

Ke-Jung Chen, Alexander Heger, Stan Woosley, Ann Almgren, and Daniel Whalen, "Pair Instability Supernovae of Very Massive Population III Stars" Astrophysical Journal, 792, 44, 2014. [arxiv].

Ke-Jung Chen, Alexander Heger, S.E. Woosley, Ann S. Almgren, and Daniel J. Whalen, "Two-Dimensional Simulations of Pulsational Pair-Instability Supernova", Astrophysical Journal, 792, 28, 2014. [arxiv].

Ke-Jung Chen, Alexander Heger, S.E. Woosley, Ann Almgren, and Daniel J. Whalen, and Jarrett L. Johnson, "The General Relativitistic Instability Supernova of a Supermassive Population III Star", Astrophysical Journal, 790, 162, 2014.

Max Duarte, Ann S. Almgren, Kaushik Balakrishnan, John B. Bell, David M. Romps, "A Numerical Study of Methods for Moist Atmospheric Flows: Compressible Equations," Monthly Weather Review, 142, pp. 4269--4283, 2014 [arxiv].

Samuel Williams, Mike Lijewski, Ann Almgren, Brian Van Straalen, Erin Carson, Nicholas Knight, and James Demmel, "s-Step Krylov Subspace Methods as Bottom Solvers for Geometric Multigrid," Proceedings of the 28th IEEE International Parallel & Distributed Processing Symposium, May 2014.

W. Schmidt, A.S. Almgren, H. Braun, J.F. Engels, J.C. Niemeyer, R.R. Mekuria, A.J. Aspden, J.B. Bell, "Cosmological Fluid Mechanics with Adaptively Refined Large Eddy Simulations," Monthly Notices of the Royal Astronomical Society, 440, pp. 3051-3077, 2014. [arxiv]

Christopher Malone, A. Nonaka, S. Woosley, A. Almgren, J. Bell, S. Dong and M. Zingale, "The Deflagration Stage of Chandrasekhar Mass Models for Type Ia Supernovae: I. Early Evolution", Astrophysical Journal,782, 11, 2014. [iop]

2013

Ke-Jung Chen, Alexander Heger, and Ann S. Almgren, "Numerical Approaches for Multidimensional Simulations of Stellar Explosions", Astronomy and Computing, 3-4, pp. 70-78, Nov.-Dec. 2013. [doi]

C. Gilet, A. S. Almgren, J. B. Bell, A. Nonaka, S. E. Woosley, M. Zingale, "Low-Mach Number Modeling of Core Convection in Massive Stars", Astrophysical Journal, 773, 137, 2013. [pdf]

Haitao Ma, Stan Woosley, Chris Malone, Ann Almgren, and J.B. Bell, "Carbon Deflagration in Type Ia Supernovae: I. Centrally Ignited Models", Astrophysical Journal, 771, 58, 2013.

M. Zingale, A. Nonaka, A. S. Almgren, J. B. Bell, C. Malone, and R. Orvedahl, "Low Mach Number Modeling of Convection in Helium Shells on Sub-Chandrasekhar White Dwarfs. I. Methodology", Astrophysical Journal, 764, 97, 2013. [pdf]

Weiqun Zhang, L. Howell, A. Almgren, A. Burrows, J. Dolence, J. Bell, "CASTRO: A New Compressible Astrophysical Solver. III. Multigroup Radiation Hydrodynamics", Astrophysical Journal Supplement Series, 204, 7, 2013. [pdf]

A.S. Almgren, A.J. Aspden, J. B. Bell, and M. L. Minion, "On the Use of Higher-Order Projection Methods for Incompressible Turbulent Flow", SIAM J. Sci. Comput., 35, 1, B25-B42, 2013. [pdf]

A. S. Almgren, J. B. Bell, M.J. Lijewski, Z. Lukic, E. Van Andel, "Nyx: A Massively Parallel AMR Code for Computational Cosmology" Astrophysical Journal, 765, 39, 2013.

2012

A. Nonaka, J. B. Bell, M. S. Day, C. Gilet, A. S. Almgren, and M. L. Minion, "A Deferred Correction Coupling Strategy for Low Mach Number Flow with Complex Chemistry", Combustion Theory and Modelling, vol. 16, no. 6, pp. 1053-1088, 2012. [pdf]

R. Tiron, A.S. Almgren, R. Camassa, "Shear instability of internal solitary waves in Euler fluids with thin pycnoclines, Journal of Fluid Mechanics,712, 324-361, 2012.

S. Williams, D. Kalamkar, A. Singh, A. Deshpande, B. Van Straalen, M. Smelyanskiy, A. Almgren, P. Dubey, J. Shalf, L. Oliker, "Optimization of Geometric Multigrid for Emerging Multi- and Manycore Processors", accepted for publication in Supercomputing 2012 Conference

Samuel Williams, Dhiraj D. Kalamkar, Amik Singh, Anand M. Deshpande, Brian Van Straalen, Mikhail Smelyanskiy, Ann Almgren, Pradeep Dubey, John Shalf, Leonid Oliker, "Implementation and Optimization of miniGMG - a Compact Geometric Multigrid Benchmark", LBNL 6676E, December 2012.

J. Nordhaus, T.D. Brandt, A. Burrows, A. Almgren, "The Hydrodynamic Origin of Neutron Star Kicks", Monthly Notices of the Royal Astronomical Society, 423, Issue 2, June 2012.

A. Nonaka, A. J. Aspden, M. Zingale, A. S. Almgren, J. B. Bell, and S. E. Woosley, "High-Resolution Simulations of Convection Preceding Ignition in Type Ia Supernovae Using Adaptive Mesh Refinement", Astrophysical Journal, 745, 73, 2012. [arxiv]

G. S. H. Pau, J. B. Bell, A. S. Almgren, K. M. Fagnan and M. J. Lijewski, "An Adaptive Mesh Refinement Algorithm for Compressible Two-Phase Flow In Porous Media", Computational Geosciences, 16, 577-592, 2012. [pdf]

2011

Emmanouela Rantsiou, Adam Burrows, Jason Nordhaus, Ann Almgren, "Induced Rotation in Three-Dimensional Simulations of Core-Collapse Supernovae: Implications for Pulsar Spins," Astrophysical Journal, 732, 57, 2011. [arxiv].

A. Nonaka, A. S. Almgren, J. B. Bell, H. Ma, S. E. Woosley, and M. Zingale, "From Convection to Explosion: End-to-End Simulation of Type Ia Supernovae," Proceedings of SciDAC 2011, Denver, Colorado, July 2011. [pdf] [arxiv]

M. Zingale, A. Nonaka, A. S. Almgren, J. B. Bell, C. M. Malone, and S. E. Woosley, "The Convective Phase Preceding Type Ia Supernovae", Astrophysical Journal, 740, 8, (2011). [pdf]

W. Zhang, L. Howell, A. Almgren, A. Burrows, and J. Bell "CASTRO: A New Compressible Astrophysical Solver. II. Gray Radiation Hydrodynamics", Astrophysical Journal Supplement Series, 196, 20, (2011) [pdf]

A. Nonaka, S. May, A. S. Almgren, and J. B. Bell, "A Three-Dimensional, Unsplit Godunov Method for Scalar Conservation Laws", SIAM J. Sci. Comput., vol. 33, no. 4, 2011. [pdf]

S. May, A. Nonaka, A. S. Almgren, and J. B. Bell, "An Unsplit, Higher-Order Godunov Method Using Quadratic Reconstruction for Advection in Two Dimensions", Comm. App. Math. and Comp. Sci., vol. 6, no. 1, 2011. [pdf]

C. M. Malone, A. Nonaka, A. S. Almgren, J. B. Bell, and M. Zingale, "Multidimensional Modeling of Type I X-ray Bursts. I. Two-Dimensional Convection Prior to the Outburst of a pure ⁴He Accretor," Astrophysical Journal, 728, 118, Feb. 2011. [arxiv] [pdf]

Ke-Jung Chen, Alexander Heger, and Ann Almgren, "Multi-Dimensional Simulations of Pair-Instability Supernovae", Computer Physics Communications, 182:1, 254-256, January 2011. [arxiv].

2010

J. Nordhaus, A. Burrows, A. Almgren, and J. Bell, "Dimension as a Key to the Neutrino Mechanism of Core-Collapse Supernova Explosions," Astrophysical Journal, 720, 694, Sept. 2010. [arxiv].

C. C. Joggerst, A. Almgren, and S. E. Woosley, "Three-dimensional simulations of Rayleigh-Taylor mixing in core collapse supernovae with CASTRO", Astrophysical Journal, 723, 353, October 2010.

H. Ma, M. Zingale, S. E. Woosley, A. J. Aspden, J. B. Bell, A. S. Almgren, A. Nonaka, and S. Dong, "Type Ia Supernovae: Advances in Large Scale Simulation," Proceedings of SciDAC 2010, Chattanooga, Tennessee, July 2010.

A. Almgren, J. Bell, D. Kasen, M. Lijewski, A. Nonaka, P. Nugent, C. Rendleman, R. Thomas, and M. Zingale, "MAESTRO, CASTRO and SEDONA -- Petascale Codes for Astrophysical Applications", Proceedings of SciDAC 2010, Chattanooga, Tennessee, July 2010. [arxiv]

A. Nonaka, A.S. Almgren, J. B. Bell, M. J. Lijewski, C. M. Malone, and M. Zingale, "MAESTRO: An Adaptive Low Mach Number Hydrodynamics Algorithm for Stellar Flows", Astrophysical Journal Supplement Series, 188, 358-383, June 2010. [pdf] [arxiv]

A. S. Almgren, V.E. Beckner, J.B. Bell, M.S. Day, L.H. Howell, C.C. Joggerst, M.J. Lijewski, A. Nonaka, M. Singer, M. Zingale, "CASTRO: A New Compressible Astrophysical Solver. I. Hydrodynamics and Self-Gravity", Astrophysical Journal, 715, 1221-1238, June 2010. [pdf] [IOP] [arxiv]

Ke-Jung Chen, Alexander Heger, and Ann Almgren, "Two Dimensional Simulations of Pair-Instability Supernovae", Conference on The First Stars and Galaxies: Challenges for the Next Decade, Austin, Texas, March 8-11, 2010, Conference Proceedings, published by the American Institute of Physics. [pdf]

2009

M. Zingale, A. S. Almgren, J. B. Bell, A. Nonaka, and S. E. Woosley, "Low Mach Number Modeling of Type Ia Supernovae. IV. White Dwarf Convection", Astrophysical Journal, 704, 196-210, 2009. [pdf]

G. S. H. Pau, J. B. Bell, K. Pruess, A. S. Almgren, M. J. Lijewski, K. Zhang, "High resolution simulation and characterization of density-driven flow in CO2 storage in saline aquifers'', Advances in Water Resources, 33(4):443-455, 2010. [pdf]

G. S. H. Pau, J. B. Bell, K. Pruess, A. S. Almgren, M. J. Lijewski, K. Zhang, "Numerical studies of density-driven flow in CO2 storage in saline aquifers", Proceedings of TOUGH Symposium, September 14 -16 2009, Berkeley, California, USA. [pdf]

G. S. H. Pau, A. S. Almgren, J. B. Bell, M. J. Lijewski, E. Sonnenthal, N. Spycher, T. Xu, G. Zhang, "A Parallel Second-Order Adaptive Mesh Algorithm for Reactive Flow in Geochemical Systems", Proceedings of TOUGH Symposium, September 14 -16 2009, Berkeley, California, USA. [pdf]

C. C. Joggerst, A. Almgren, J. Bell, Alexander Heger, Daniel Whalen, and S. E. Woosley, "Primordial Core-Collapse Supernovae and the Chemical Abundances of Metal-Poor Stars," Astrophysical Journal, 709, 11-26, January 2010.

G. S. H. Pau, A. S. Almgren, J. B. Bell, and M. J. Lijewski, "A Parallel Second-Order Adaptive Mesh Algorithm for Incompressible Flow in Porous Media," Phil. Trans. R. Soc. A 367, 4633-4654, 2009.

S.E. Woosley, A.S. Almgren, A.J. Aspden, J.B. Bell, D. Kasen, A.R. Kerstein, H. Ma, A. Nonaka and M. Zingale, "Type Ia Supernovae: Advances in Large Scale Simulation ", SciDAC 2009, J. of Physics: Conference Series, 180, San Diego, CA, July 2009. [pdf]

A. S. Almgren, J. B. Bell, A. Nonaka, M. Zingale, "A New Low Mach Number Approach in Astrophysics", Computing in Science and Engineering, vol. 11, no. 2, pp. 24-33, March/April 2009. [CiSE]

G. S. H. Pau, A. S. Almgren, J. B. Bell, and M. J. Lijewski, "A Parallel Second-Order Adaptive Mesh Algorithm for Incompressible Flow in Porous Media", Proc. Royal Soc. A, 2009. LBNL Report LBNL-71465. [pdf]

2008

M. Zingale, A. S. Almgren, J. B. Bell, C. M. Malone and A. Nonaka, "Astrophysical Applications of the MAESTRO Code", SciDAC 2008, J. of Physics: Conference Series, 125, Seattle Washington, July 2008. [pdf]

A. S. Almgren, J. B. Bell, A. Nonaka, and M. Zingale, "Low Mach Number Modeling of Type Ia Supernovae. III. Reactions", Astrophysical Journal, 684, 449-470, 2008. LBNL Report LBNL-58673 Pt. III. [pdf]

1991-2007

A.S. Almgren, J.B. Bell, and M. Zingale, "MAESTRO: A Low Mach Number Stellar Hydrodynamics Code ", SciDAC 2007, J. of Physics: Conference Series, Boston, Massachusetts, July 2007.

S.E. Woosley, A.S. Almgren, J.B. Bell, G. Glatzmaier, D. Kasen, A.R. Kerstein, H. Ma, P. Nugent, F. Ropke, V. Sankaran and M. Zingale, "Type Ia Supernovae ", SciDAC 2007, J. of Physics: Conference Series, Boston, Massachusetts, July 2007.

A. S. Almgren, J. B. Bell, C. A. Rendleman, and M. Zingale, "Low Mach Number Modeling of Type Ia Supernovae. II. Energy Evolution", Astrophysical Journal, 649, 927-938, 2006. LBNL Report LBNL-58673 Pt. II. [pdf]

A. S. Almgren, J. B. Bell, C. A. Rendleman, and M. Zingale, "Low Mach Number Modeling of Type Ia Supernovae. I. Hydrodynamics", Astrophysical Journal, 637, 922-936, 2006. LBNL Report LBNL-58673. [pdf](revised)

J. Bell, M. Day, A. Almgren, M. Lijewski, C. Rendleman, R. Cheng, I. Shepherd, "Simulation of Lean Premixed Turbulent Combustion ", SciDAC 2006, J. of Physics: Conference Series, (William Tang, Ed.), Denver, Colorado, 46, 1-15, 2006.

Sarah A. Williams, Ann S. Almgren, and E. Gerry Puckett, "On Using a Fast Multipole Method-based Poisson Solver in an Approximate Projection Method", LBNL Report LBNL-59934, March 2006. [pdf]

A. S. Almgren, J. B. Bell, and W. Y. Crutchfield, ``Approximate Projection Methods: Part I. Inviscid Analysis,'' SIAM J. Sci. Comput., 22:4, pp. 1139-59, 2000. LBNL Report LBNL-43374. [Abstract(html)] [paper.ps.gz]

A. S. Almgren, ``A New Look at the Pseudo-Incompressible Solution to Lamb's Problem of Hydrostatic Adjustment'' J. Atmos. Sci., 57:7, p. 995-998, 2000. [paper.ps.gz] [Abstract(html)]

N. Botta, R. Klein, and A. Almgren, ``Dry Atmosphere Asymptotics,'' PIK Report 55, Potsdam Institut fur Klimafolgenforschung, September 1999. [paper.ps.gz]

N. Botta, R. Klein, and A. Almgren, ``Asymptotic analysis of a dry atmosphere'', Proceedings of the ENUMATH99 Conference,, Jyvaskyla, Finland, July 1999.

D. S. Nolan, A. S. Almgren, and J. B. Bell, ``High Reynolds Number Simulations of Axisymmetric Tornado-like Vortices with Adaptive Mesh Refinement'' LBNL Report LBNL-42860. [paper.ps.gz] [Abstract(html)]

David E. Stevens, John B. Bell, Ann S. Almgren, Vincent E. Beckner, and Charles A. Rendleman, ``Small Scale Processes and Entrainment in a Stratocumulus Marine Boundary Layer'' J. Atmos. Sci., 57:4, pp. 567-581, Feb. 2000. [paper.ps.gz]

Ann S. Almgren, John B. Bell, Phillip Colella, Louis H. Howell, Michael L. Welcome, A Conservative Adaptive Projection Method for the Variable Density Incompressible Navier-Stokes Equations, J. Comp. Phys., 142, pp. 1-46, 1998. [Abstract] [Paper(ps.gz)]

E.G. Puckett, Ann S. Almgren, John B. Bell, Daniel L. Marcus, William J. Rider, A Higher-Order Projection Method for Tracking Fluid Interfaces in Variable Density Incompressible Flows, J. Comp. Phys., 130, pp. 269-282, 1997. [Abstract] [paper] [Figure 3] [Figures 4&5]

Richard B. Pember, Ann S. Almgren, John B. Bell, Phillip Colella, Louis Howell, Mindy Lai, A Higher-Order Projection Method for the Simulation of Unsteady Turbulent Nonpremixed Combustion in an Industrial Burner, UCRL-JC-118634, LLNL, December, 1994, Transport Phenomena in Combustion, Taylor and Francis, publ., 1996. [Abstract] [Preprint] [fig. 2,3] [fig. 4] [Paper(ps.gz)]

R.B. Pember, P. Colella, L.H. Howell, A.S. Almgren, J.B. Bell, W. Y. Crutchfield, V.E. Beckner, K.C. Kaufman, W.A. Fiveland, J.P. Jessee, The Modeling of a Laboratory Natural Gas-Fired Furnace with a Higher-Order Projection Method for Unsteady Combustion, Technical Report UCRL-JC-123244, LLNL, February 1996. Twenty-sixth International Symposium on Combustion,Naples, Italy, July 28 - August 2, 1996. [Abstract(ps.gz)] [Paper(ps.gz)] [Poster session(ps.gz)]

Mark M. Sussman, Ann S. Almgren, John B. Bell, Phillip Colella, Louis H. Howell, Michael Welcome, An Adaptive Level Set Approach for Incompressible Two-Phase Flows, LBNL-40327, J. Comp. Phys., 148, pp. 81-124, 1999. [Paper(ps.gz)]

Mark M. Sussman, Ann S. Almgren, John B. Bell, Phillip Colella, Louis H. Howell, Michael Welcome, An Adaptive Level Set Approach for Incompressible Two-Phase Flows, Proceedings of the ASME Fluids Engineering Summer Meeting: Forum on Advances in Numerical Modeling of Free Surface and Interface Fluid Dynamics, San Diego, CA, July 7-11, 1996. [Abstract]

Richard B. Pember, Ann S. Almgren, William Y. Crutchfield, Louis H. Howell, John B. Bell, Phillip Colella, and Vincent E. Beckner, An Embedded Boundary Method for the Modeling of Unsteady Combustion in an Industrial Gas-Fired Furnace, Technical Report UCRL-JC-122177, LLNL, October 1995. Proceedings of the 1995 Fall Meeting of the Western States Section of the Combustion Institute,, Stanford, CA, October 30-31, 1995. [Paper(ps.gz)] [Abstract(ps.gz)]

Robert Almgren and Ann S. Almgren, Phase Field Instabilities and Adaptive Mesh Refinement, Modern Methods for Modeling Microstructure in Materials, TMS/SIAM, 1996 (Proceedings of TMS meeting, October 1995, Cleveland, OH). [Abstract]

Ann S. Almgren, John B. Bell, Phillip Colella, Louis H. Howell, Michael Welcome, A High-Resolution Adaptive Projection Method for Regional Atmospheric Modeling, Proceedings of the NGEMCOM Conference sponsored by the U.S. EPA, August 7-9, 1995, Bay City, MI. [Abstract]

Ann S. Almgren, John B. Bell, Phillip Colella, Tyler Marthaler A Cartesian Grid Projection Method for the Incompressible Euler Equations in Complex Geometries, SIAM J. Sci. Comp., 18:5, Sept. 1997. [Abstract] [Paper(ps.gz)]

Ann S. Almgren, John B. Bell, Phillip Colella, Tyler Marthaler A Cell-Centered Cartesian Grid Projection Method for the Incompressible Euler Equations in Complex Geometries, Proceedings of the AIAA 12th Computational Fluid Dynamics Conference, June 19-22, 1995, San Diego, CA. [Abstract] [Paper(ps.gz)]

Ann S. Almgren, John B. Bell, Louis H. Howell, Phillip Colella, An Adaptive Projection Method for the Incompressible Navier-Stokes Equations, Proceedings of the IMACS 14th World Conference, July 11-15, 1994, Atlanta, GA. [Abstract]

Ann S. Almgren, John B. Bell, Phillip Colella, Louis H. Howell, An Adaptive Projection Method for the Incompressible Euler Equations, Proceedings of the AIAA 11th Computational Fluid Dynamics Conference, July 6-9, 1993, Orlando, FL. [Abstract]

Ann S. Almgren, John B. Bell, William G. Szymczak, A Numerical Method for the Incompressible Navier-Stokes Equations Based on an Approximate Projection, SIAM J. Sci. Comp.,17:2, March 1996. [Abstract]

Ann Almgren, Thomas Buttke, Phillip Colella, A Fast Adaptive Vortex Method in Three Dimensions, J. Comp. Physics, 113:2 , August 1994. [Abstract]

Ann Almgren, Thomas Buttke, and Phillip Colella, A Fast Vortex Method in Three Dimensions, Proceedings of the AIAA 10th Computational Fluid Dynamics Conference, June 24-27, 1991, Honolulu, HI. [Abstract]