The labyrinth channel flows driven by constant pressure ratio are numerically studied under various depth to width ratios, H/ W, and cavity inclinations, θ. The time-dependent compressible Navier-stokes equations are solved by a high-order finite volume algorithm based on TVD scheme. 采用TVD格式求解非定常可压缩Navier-Stokes方程,数值研究恒定压比作用下不同空腔深宽比H/W和倾向6的迷宫密封内部流动。