Ansumali Santosh, Karlin Iliya V
School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore.
Phys Rev Lett. 2005 Dec 31;95(26):260605. doi: 10.1103/PhysRevLett.95.260605. Epub 2005 Dec 29.
Lack of energy conservation in lattice Boltzmann models leads to unrealistically high values of the bulk viscosity. For this reason, the lattice Boltzmann method remains a computational tool rather than a model of a fluid. A novel lattice Boltzmann model with energy conservation is derived from Boltzmann's kinetic theory. Simulations demonstrate that the new lattice Boltzmann model is the valid approximation of the Boltzmann equation for weakly compressible flows and microflows.
格子玻尔兹曼模型中缺乏能量守恒会导致体黏度值高得不切实际。因此，格子玻尔兹曼方法仍然是一种计算工具，而非流体模型。一种具有能量守恒的新型格子玻尔兹曼模型是从玻尔兹曼动力学理论推导出来的。模拟结果表明，新的格子玻尔兹曼模型是弱可压缩流和微流中玻尔兹曼方程的有效近似。
