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弹道学报  2014 

化学反应流模拟的并行无网格方法

Keywords: 无网格方法,化学反应流,并行计算,数值模拟

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Abstract:

为进一步扩大无网格方法在复杂化学反应流场模拟中的计算规模,基于MPI(MessagePassingInterface)并行环境,发展了耦合有限速率反应模型的并行无网格算法,其流体动力学采用包含反应源项的二维轴对称Euler方程建模,对流通量采用多组分HLLC(Harten?Lax?vanLeer?contact)格式计算,时间项运用4阶Runge?Kutta法显式推进。分别采用2~8个进程对激波诱导燃烧流场以及高速运动弹丸诱导斜爆轰流场进行了数值模拟,其结果同实验以及网格方法获得的结果吻合较好,并且具有较理想的并行效率,验证了其在复杂化学反应流大规模计算中应用的正确性和有效性。

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