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热辐射传递具有非灰性、方向性、全场性的特点,这使得基于CFD框架下整体的燃烧-流动-辐射场模拟工作中往往辐射模块占用大量计算时间和计算资源。为提高复杂流场计算效率,目前在CFD已经开始使用分区并行计算技术。相对而言,辐射换热计算技术发展落后于流动计算技术。本文将分区并行计算技术引入到参与性介质辐射传输求解当中,采用离散坐标法结合并行计算环境MPI,对辐射传输分区并行计算方案、数值边界网格处理方法、数据交换方式进行研究,并通过对矩形炉膛内辐射场进行求解,验证分区并行方法的可行性,结果表明分区并行计算结果与没有分区能够很好地吻合,并获得了较高的并行效率。
Due to the non-asymptotic, directional and global characteristics of the radiative heat transfer, the radiation module takes up a lot of computational time and computational resources based on the overall combustion-flow-radiation field simulations under the CFD framework. To improve computational efficiency in complex flow fields, partitioned parallel computing has now begun to be used in CFD. In contrast, radiation heat transfer computing technology lags behind the flow of computing technology. In this paper, the partition parallel computing technology is introduced into the solution of the radiative transfer of participant medium. The discrete coordinate method and parallel computing environment MPI are used to study the parallel computing scheme of radiative transfer partition, the method of numerical boundary grid processing and data exchange. Rectangular furnace cavity radiation field solution to verify the feasibility of partition parallel method, the results show that partition parallel computing results with no partition can be a good match, and access to higher parallel efficiency.