采用MATLAB语言，编写的基于格子Boltzmann算法计算rayleighbenard_squre Flow的程序代码。-rayleighbenard_squre Flow by LBM

LBM算法的多松弛；LBM的D2Q9模型；LBM的D3Q15模型；LBM的两区域模型(The LBM algorithm is more relaxed; LBM's D2Q9 model; LBM's D3Q15 model; LBM's two region model.)