1 1  Capabilities: Building blocks for block-structured AMR codes for solving time-dependent PDE’s Functionality for [1…6]D, mixed-dimension building Supports data on cell centers, faces and nodes. Support for  Grid-based operations (explicit and/or implicit)  Communication between levels (explicit and/or implicit)  Particle and particle/mesh algorithms Support for second- and higher-order time-stepping methods Hybrid C++/Fortran 90 code. ChomboFortran source-to-source DSL Can run in serial, with MPI only, or with hybrid MPI + OpenMP for node-level parallelism Has native single-level and multilevel multigrid solvers that respect the inherent domain decomposition HDF5 I/O for both restart and plotfiles – visualization format supported by Visit.  Download : anag-repo.lbl.gov  Further information : Brian Van Straalen, Chombo – Block-structured AMR software framework

2 2  Large Eddy simulations of wind turbines (PI, R. Samtaney, KAUST, S. Guzik CSU).  CHARM - Compressible CFD + collisionless particle cosmology simulations (PI F. Miniati, ETH Zurich)  MS_FLUKSS - Physics of the Solar Wind and Its Interaction with the Interstellar medium using compressible hyperbolic CFD + electromagnetic and kinetic effects (G. Zank. and N. Pogorelov UA-Huntsville)  PLUTO - General astrophysics modeling (PI A. Mignone)  ORION - Astrophysical MHD turbulence PI C. McKee / R. Klein, UCB  REALM - SF Bay and Delta Hydrology modeling shallow water (PI P. Schwartz, LBNL and CA Department of Water Resources)  Plasma-wakefield accelerators -- compressible viscous flow (PI D. Graves, LBNL).  ChomboCrunch - Pore-scale subsurface reacting flow code (PI D. Trebotich, LBNL)  Conjugate heat transfer in nuclear reactors (PI R. Crockett, LBNL, TechX)  COGENT - 4D gyrokinetic models of tokamak edge ( PI J. Hittinger, LLNL)  BISICLES - Land ice model for climate simulation (PI D. Martin, LBNL) FASTMath SciDAC Institute Chombo: Application Codes

3 3 Chombo-Crunch: CFD + multi-component geochemical reactive transport in very complex pore (micro) scale geometries  Adaptive, finite volume methods for advection- diffusion in Chombo Accurate reactive surface area using embedded boundaries Dynamic local refinement (AMR) Scalable (100K processors) Direct simulation of image data  CrunchFlow geochemistry SNIA operator splitting Point-by-point calculation CFL-limited timestep Rate calculated at each water-mineral interface by multiplying by the reactive surface area (RSA) Computational domain for calcite in capillary tube Image data converted to simulation grid using implicit function representation of boundaries