方腔流的并行程序。非平衡态外推格式：附近一个格点，得边界三个方向上分布函数。边界也碰撞。角点处理。结果好。即是Cavityflow5中的程序改为并行程序。分区的线垂直于X轴。结果好，两核约快1.5倍-Cavity flow parallel program. Non-equilibrium extrapolation scheme: near a lattice point, the boundary of three direction distribution function. The b