A novel two-dimensional coupled lattice Boltzmann model for incompressible flow in application of turbulence Rayleigh–Taylor instability
A novel two-dimensional coupled lattice Boltzmann model for incompressible flow in application of turbulence Rayleigh–Taylor instability
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一种新颖的二维耦合晶格玻尔兹曼模型，适用于湍流瑞利泰勒不稳定性的不可压缩流应用
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
Zhengdao Wang
中科院分区：
文献类型：
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作者：
Yikun Wei;Hua-Shu Dou;Yuehong Qian;Zhengdao Wang
建立了二维不可压Rayleigh-Taylor不稳定性的耦合格子Boltzmann模型。本文提出了一种修正的艾德平衡分布函数（D2 Q 13）。本模型是稳定和可靠的顶部和底部之间的温度跳跃的顺序为50 ℃的平均整体温度。用简单的标度方法讨论了混合瑞利-泰勒不稳定性的区域，并用本模型验证了所得的标度关系。计算结果与其它数值方法或解析解吻合良好，表明本模型是求解Rayleigh-Taylor不稳定性的一种有效数值方法。
A novel coupled lattice Boltzmann model is developed for two-dimensional incompressible Rayleigh–Taylor instability. a modified equilibrium distribution function (D2Q13)is proposed in this paper. The present model is stable and reliable up to temperature jumps between top and bottom walls of the order of 50 ϰ the averaged bulk temperature. The regimes of mixing Rayleigh–Taylor instability are discussed using a simple scaling and the scaling relations obtained are validated by the present model. It is demonstrated that excellent agreement between the present results and the other numerical method or analytical solution shows that the present model is an efficient numerical method for Rayleigh–Taylor instability.