A Parallel Self-Resembled Recursive Method of Simulating Complex Combustion Flow Field in Liquid Rocket Engine Based on Grid Computing
Qinyong Yang, Wentao Zhao · 2005
Simulating the complex combustion flow filed in Liquid Rocket Engine on MPP(massively parallel processors) supercomputers is a challenge problem. This challenge issue, however, can be efficiently researched based on Grid Computing owing to its super computing capacity . Desktop Grid can assemble tens of thousands idle CPUs in PCs to solve great scale scientific computing problems. These traditional methods such as Multigrid Method, Domain Decomposition Method, etc., would fail in solving problems in th is computing environment. A parallel method of simulating complex combustion flow filed in liquid rocket engine in Desktop Grip Computing Environment (DGCE), named Self -Resembled Recursive (SRR) method, is proposed in this paper. SRR divides original prob lem into self -resembled sub -problems. At first, a process group concurrently calculates discrete boundary and initial conditions of each subspace. In second level, each process group concurrently calculates physic s parameters in complex combustion flow fie ld in its subspace depending only on its own boundary and initial conditions. There will to be no communication and synchronal dependent between computing nodes. If the size of subspace is huge, we can recursively applies SRR in second step of it again. Nomenclature