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针对目前Forchheimer方程中研究渗流参数较少的问题,运用数值模拟对比分析了Forchheimer型非达西渗流和达西渗流,验证了高渗流速度下Forchheimer型非达西渗流的正确性,进而通过非达西效应分析了Forchheimer型非达西渗流参数特征。结果表明,非达西流影响系数与渗流速度为反比关系;发生非达西渗流时,渗透系数会降低;非达西效应越明显,渗透系数越低。
In view of the fact that there are few seepage parameters in the current Forchheimer equation, the Forchheimer-type non-Darcy flow and Darcy flow are comparatively analyzed by numerical simulation. The correctness of Forchheimer type non-Darcy flow is verified by the numerical simulation. West effect analysis of Forchheimer non-Darcy flow parameters characteristics. The results show that the non-Darcy flow influence coefficient is inversely proportional to the seepage velocity. When the non-Darcy seepage flow occurs, the permeability coefficient decreases. The non-Darcy effect is more obvious and the permeability coefficient is lower.