组合导向浮阀塔板多相流的数值模拟

摘要

A three dimensional computational fluid dynamics (CFD) model was developed to predict the multiphase flow profile of the combined guided valve tray under the full open condition. Eulerian-Eulerian framework was chosen to solve the equations of both gas and liquid phases. The clear liquid height was monitored as the numerical convergence standard of unstable flow field. The inter-phase momentum exchanging term was based on a new correlation for the clear liquid height, which was obtained from experimental data. By compared with the experimental counterparts, the simulation results were verified and more simulations were carried out for various operational conditions. The results showed that the gradient of liquid level andreflux area were small, and the fluid mechanics performance was good.%为了深入了解组合导向浮阀塔板的流体力学性能，在阀片全开状态下，利用计算流体力学（CFD）方法对700 mm中试规模的组合导向浮阀塔塔板上的气液两相三维流场进行模拟研究，采用欧拉-欧拉非稳态模型（Eulerian），考虑气液两相间的动量传递现象，将清液层高度作为衡量非稳态流场收敛的判别标准。通过关联实验数据，得出适合组合导向浮阀塔板的清液层高度关系式，并与模拟结果进行对比。模拟结果表明，组合导向浮阀塔板的液面梯度和弓形区域回流面积小，具有良好的流体力学性能。