q-LSKUM based Meshfree Solver for Inviscid Compressible Flows

Scientific Computing @ BITS Pilani - Hyderabad Campus.

Development of a meshfree solver for inviscid compressible fluid flows in C++. The meshfree solver is based on the Least Squares Kinetic Upwind Method (q-LSKUM), developed by Deshpande et. al.

This work is done as part of my M.Sc. (Hons.) Mathematics Thesis, under the guidance of Dr. N. Anil, Assistant Professor, Department of Mathematics, BITS Pilani - Hyderabad Campus, and Professor S.M. Deshpande, Jawaharlal Nehru Centre for Advanced Scientific Research.

Dependencies:

• gcc 8.3.0 or higher
• armadillo 9.900.2
• CUDA 11

Usage:

• Configure the parameters through the Config struct in core.hpp or cuda_core.hpp
• chmod +x batchscript.sh (within src/serial or src/CUDA)
• run ./batchscript

Directory Structure:

.
+-- Meshfree_cpp
|   +-- src
|       +-- serial
|           +-- main.cpp
|           +-- core.cpp
|           +-- core.hpp
|           +-- utils.cpp
|           +-- utils.hpp
|           +-- split_fluxes.cpp
|           +-- split_fluxes.hpp
|           +-- quadrant_fluxes.cpp
|           +-- quadrant_fluxes.hpp
|           +-- state_update.cpp
|           +-- state_update.hpp
|           +-- flux_residual.cpp
|           +-- flux_residual.hpp
|           +-- limiters.cpp
|           +-- limiters.hpp
|           +-- wall_fluxes.cpp
|           +-- wall_fluxes.hpp
|           +-- point.cpp
|           +-- point.hpp
|           +-- Makefile   
|           +-- batchscript.sh
|       +-- CUDA
|           +-- main_cuda.cu
|           +-- main_cuda.hpp
|           +-- core_cuda.cu
|           +-- core_cuda.hpp
|           +-- utils.cpp
|           +-- utils.hpp
|           +-- split_fluxes_cuda.cu
|           +-- split_fluxes_cuda.hpp
|           +-- quadrant_fluxes_cuda.cu
|           +-- quadrant_fluxes_cuda.hpp
|           +-- state_update_cuda.cu
|           +-- state_update_cuda.hpp
|           +-- flux_residual_cuda.cu
|           +-- flux_residual_cuda.hpp
|           +-- limiters_cuda.cu
|           +-- limiters_cuda.hpp
|           +-- wall_fluxes.cu
|           +-- wall_fluxes.hpp
|           +-- point.cpp
|           +-- point.hpp
|           +-- Makefile   
|           +-- batchscript.sh
|   +-- README.md
|   +-- LICENSE

Roadmap:

• Serial Primal Meshfree Solver
• CUDA Parallel Primal Solver Version v1
• CUDA Parallel Primal Solver Version v2
  • Reductions
  • Shared Memory
  • CUDA Graphs

Support:

Please contact the author for queries regarding code support, and Dr. N. Anil for access to the input grids.

Author:

Harivallabha Rangarajan, Department of Mathematics and Computer Science, BITS Pilani - Hyderabad.