用CFD方法研究空气通过缝隙的渗透
CFD study of air infiltration flux through cracks
摘要：
通过模拟计算，得到不同缝隙高度下渗透空气量与缝隙两侧压差的函数关系式，以及流量因数、缝隙局部阻力系数与缝隙几何特性量的函数关系式。实验验证了CFD模拟计算结果的可靠性。给出了负压病房和相邻洁净区域压差的推荐值。
关键词：CFD,缝隙,空气渗透,压差,流量因数,几何特性,负压病房
Abstract：
Based on CFD simulation calculation, obtains the relationships between air infiltration flux through cracks with different height and pressure difference, and those between flux coefficient，local resistance coefficient and geometry property of the crack. Tests the validity of the simulation results by an experiment. Recommends the proper value of pressure difference between negative pressure wards and adjacent clean zones.
Keywords:CFD, crack，air infiltration，pressure difference， flux coefficient，geometry property，negative pressure ward