湍流数值模拟用于洁净隧道污染控制的研究(Ⅰ)——层流罩下工作台位置与污染边界曲线的关系

Pollution Control in Clean Tunnel by Means of Numerical Simulation of Turbulent Flow(Ⅰ)——Relationship Between the Arrangements of Working Bench and the Polluted Boundaries Under Laminar Hood

在直接求解N-S方程进行湍流数值计算的基础上,采用数值计算与实验测量相结合的方法,对单侧布置层流罩的侧回风洁净隧道内,层流罩下工作台摆放位置与污染边界曲线的关系进行了研究．研究结果表明：采用等涡线图可以非常直观地定性分析射流边界层的发展情况,进而对污染边界的发展进行预测；工作台的适当外移,有助于扩大层流罩下的洁净空间．

Based on direct numerical simulation （DNS） , this paper, by combining numerical calculation and experimental measurement, makes a detailed study on the relationship between the arrangements of working bentch and the polluted boundaries under one-side layout laminar hood in clean tunnel. It is shown that using vorticity contour diagram is an effective way to make a visual analysis of the development of jet boundary layer as well as to forecast the development of the polluted boundary. The clean space under the laminar hood is extended while working bench move outward properly.