Parallel computation of turbulent combustion and flame spread in fires

A parallel procedure based on a single-program, multiple-data (SPMD) algori thm is presented for parallel computing of turbulent combustion and flame s pr ead in fir es. The computation is based on modeling of radiation turbule nt reacting flow and pyrolysis of solid fuel. With angular domain decomposi tion applied to the par allel computing of radiation and spatial domain dec omposition to the computation of nonradiative turbulent reacting flow and s olid fuel pyrolysis, the whole computation is distributed among a group, of concurrent tasks, which communicate with each other through a message-pass ing interface library. Using this procedure, a self-developed computational combustion code has been parallelized on both a multiprocessor PC and a sy mmetric multiprocessor (SMP) system, SGI Origin 2000. The parallelization w as verified by comparing the parallel results with sequential results. The performance of the parallel procedure was evaluated using, various test cas es. As expected the efficiency. of parallelism varies with both computer ar chitecture and case scenario. In general, good efficiency was obtained.