A Novel Lattice Boltzmann Model For Reactive Flows with Fast Chemistry
A Novel Lattice Boltzmann Model For Reactive Flows with Fast Chemistry
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DOI：
10.1088/0256-307x/23/3/037
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发表时间：
2006-03
影响因子：
3.5
通讯作者：
C. Sheng;Zhaohui Liu;He Zhu;Zhang Chao;Zhi-Wei Tian;Bao-Chang Shi;Chuguang Zheng
中科院分区：
文献类型：
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作者：
C. Sheng;Zhaohui Liu;He Zhu;Zhang Chao;Zhi-Wei Tian;Bao-Chang Shi;Chuguang Zheng
提出了一种新的格子Boltzmann模型，该模型将温度场温差与环境温差之比取为一个数量级以上，用于快速模拟二维化学反应流动。不同于反应流的混合格式[计算.太棒了。交警。129(2000)267]，该格式严格采用纯格子Boltzmann格式(即，我们只使用格子Boltzmann方法求解流场、温度场和浓度场)。不同于最近的非耦合格子Boltzmann格式[Int.J.莫德。太棒了。B 17(2003)197]，我们的模型中的流体密度与温度直接耦合。计算结果与其他数值结果吻合较好，表明该格式是一种适用于化学反应速度快的实际流动的有效数值方法。
A novel lattice Boltzmann model, in which we take the ratio of temperature difference in the temperature field to the environment one to be more than one order of magnitude than before, is developed to simulate two-dimensional reactive flows with fast chemistry. Different from the hybrid scheme for reactive flows [Comput. Phys. Commun. 129 (2000) 267], this scheme is strictly in a pure lattice Boltzmann style (i.e., we solve the flow, temperature, and concentration fields using the lattice Boltzmann method only). Different from the recent non-coupled lattice Boltzmann scheme [Int. J. Mod. Phys. B 17 (2003) 197], the fluid density in our model is coupled directly with the temperature. Excellent agreement between the present results and other numerical data shows that this scheme is an efficient numerical method for practical reactive flows with fast chemistry.