用X型热膜探针测量塔板液相三维流场

针对热膜流速仪元件的工作原理提出了通过平面旋转测量液体三维流速的新方法，并测量了大型精馏塔板液相单相三维流场，为计算流体力学对塔板模拟提供了实验验证，测量结果发现在塔板的回流区，出口堰和塔壁附近流速的垂直分量不可忽略，测量结果与用Star-CD软件在SGI公司Origin200server工作站计算结果表明，该实验测试手段是成功的。

Study on Liquid Three-Dimensional Velocity Field on Tray with Hot Film Anemometer

In this paper, a new method of measuring liquid three dimensional flow velocity by rotating the probe in the plane is presented based on the elaborate analyzing of hot film anemometer. Some experiments are conducted by using the method on the commercial scale distillation tray, which provide the experimental conformation for the CFD simulation of the distillation tray. And the three dimensional liquid velocity is acquired. It is found that the vertical velocities in the circulation area and the area near the outlet weir and the wall can not be neglected. Moreover, on some points, the vertical velocity is in the same order of magnitude as the horizontal velocity. The comparison between the measured and the calculated result with Star CD at workstation of Origin 200 Server in SGI Corp, shows that the method is successful.