计算物理 ›› 2015, Vol. 32 ›› Issue (6): 677-684.
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甄亚欣1,2, 倪国喜1
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ZHEN Yaxin1,2, NI Guoxi1
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摘要: 在移动网格上构造一种反应流的动理学格式.首先利用BGK模型推导含化学反应的流体力学方程组,并利用其积分形式构造移动网格上离散格式,再利用自适应移动网格方法得到网格速度,最后利用时间精确的动理学数值方法构造数值通量,得到移动网格单元上新的物理量.一维与二维的数值实验表明这种格式同时具有高精度、高分辨率的特点.
关键词: 反应流体力学方程, 动理学格式, 自适应移动网格方法
Abstract: We concern extension of gas-kinetic scheme of BGK type to reactive fluids, and develop an adaptive moving meshes BGK scheme (AMMBGK). We derive systems from a mass fraction BGK model for detonation fluids, including both inviscid and viscous reactive flow systems. Then, based on a BGK type scheme and splitting method that splits system into fluid part and part of energy released from reaction process, we present a mass fraction BGK scheme on moving meshes for reactive flows. Numerical results validate availability of the gas-kinetic scheme in simulation of reactive fluids.
Key words: reactive fluids, mass fraction BGK model, gas kinetic scheme, adaptive moving meshes
中图分类号:
O351
甄亚欣, 倪国喜. 反应流体的移动网格动理学格式[J]. 计算物理, 2015, 32(6): 677-684.
ZHEN Yaxin, NI Guoxi. Adaptive Moving Mesh Kinetic Scheme for Reactive Fluids[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2015, 32(6): 677-684.
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