Based on pseudo compressibility , two - dimensional low - speed flows are numerically simulated by solving euler and navier - stokes equations . the pseudo - compressibility term is introduced to the continuity equation of incompressible governing equations , which results in a closed hyperbolic system of equations 通過在不可壓連續(xù)性方程中引入擬壓縮項,使控制方程成為一個封閉且可以沿時間方向推進求解的雙曲型偏微分方程組。