B. Rybakin
Lomonosov MSU, SRISA RAS
Russia
Title: Computer modeling of astrophysical processes in three-dimensional statement of the very large resolution grids using GPU
Biography
Biography: B. Rybakin
Abstract
Computer simulation of gas-dynamic processes during the interaction of shock waves of great intensity, with different objects is the main objective of the study in this paper. Such problems arise when modeling engines for hypersonic aircraft, the study of their external aerodynamics, the study of the processes occurring during the collapse supernovae, the interaction of shock waves with the protoplanetary matter, etc. In astrophysics major role played by different processes, which are very different in size and timeline, often the initial and boundary conditions are not well known. Therefore, it is very difficult to get a really realistic model that takes into account all the physical processes. A detailed study of such processes can only be performed on grids with a very large resolution and using differential methods of high resolution. In this work, computer modeling of gas-dynamic processes is carried out on a rectangular three-dimensional Eulerian grid very large resolution. The solution algorithm is based on the schemes of the high resolution type TVD and allows us to implement parallelization on multi-core processors and graphics accelerators Kepler and Maxwell. The results of modeling the interaction of shock waves of varying intensity with fragmented cloud of molecular gas are discussed. It is shown that the use of graphics accelerators can significantly speed up computations on grids with a resolution of more than 108 cells.