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在三维任意曲线坐标系下采用欧拉-拉格朗日两相大涡模拟方法对模型燃烧室气液两相瞬态喷雾燃烧过程进行大涡模拟并行计算研究。通过大涡模拟计算结果与雷诺平均计算结果对比表明大涡模拟方法能更好的模拟流场细观结构。同时分别采用多个处理器和动态内存分配对大涡模拟并行计算程序进行数值模拟,并行计算结果表明:多个处理器之间并行计算结果与PIV测量的瞬态速度场以及出口温度分布实验数据相互吻合,表明采用并行计算和动态内存分配在保证计算结果正确的前提下,大幅度降低计算机内存和大涡模拟计算时间。
In the three-dimensional arbitrary curvilinear coordinate system, large-eddy simulation parallel calculation of the transient combustion process of gas-liquid two-phase in the model combustor was carried out by Euler-Lagrange two-phase large eddy simulation method. The comparison between the large eddy simulation results and the Reynolds average calculation results shows that the large eddy simulation method can better simulate the flow field meso-structure. At the same time, a large number of processors and dynamic memory allocation were used to simulate the large eddy simulation parallel computing program. The parallel computing results show that the parallel computing results between multiple processors and the transient velocity field of PIV and the experimental data of outlet temperature distribution Coincide with each other, indicating that using parallel computing and dynamic memory allocation to ensure that the calculation results are correct under the premise of significantly reducing the computer memory and large eddy simulation calculation time.