摘要
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。
Aiming at the less research of seepage parameters of Forchheimer＇s equation, numerical simulation is used to analyze the Forchheimer＇s non Darcy and Darcy seepage. The validity of Forchheimer＇s non Darcy seepage at high ve locity is verified. And then, the characteristics of parameters for Forchheimer＇s non Darcy seepage was analyzed by non Darcy effect. The results show that non Darcy eoefficient is inversely proportional to seepage velocity; the hydraulic con ductivity reduces when the seepage is non-Darcy flow; more apparent the non-Darcy effect , the lower the permeability coefficient is.
出处
《水电能源科学》
北大核心
2014年第1期52-54,164,共4页
Water Resources and Power
基金
教育部博士点新教师基金(20110094120002)
