矿井回风喷淋换热器挡水板CFD仿真及研究

 矿井回风喷淋换热器中的挡水板主要用来捕捉即将排出换热器的回风中的水滴，但它也会增加回风的压力和压降，造成回风排放不顺畅。针对5扇叶平面百叶窗挡水板产生的压力/压降及捕捉液滴效率与挡水板倾角的关系问题，利用CFD仿真软件FLUENT进行仿真，并通过实验进行了验证。结果表明：随着挡水板倾角的减小，挡水板产生的压力/压降和捕捉液滴效率都在增大，但增大的程度又有区别。

CFD simulation and study for water baffle of spraying heat exchanger of mine return air

The main function of Water Baffle (WB) in Spraying Heat Exchanger of Mine Return Air (SHEMRA) is to trap water droplets in emitting Mine Return Air (MRA) from SHEMRA. But the use of WB can also increase the static pressure (P)/pressure drop (ΔP) and make MRA hard to emit from SHEMRA. This paper examines the relationship between P/ΔP/η (trapping water droplet efficiency) and angles of plane shutter WB by CFD simulation using FLUENT software package, and compare the result with the experimental data. The results show that P/ΔP and η are getting increasing with the decrease of the angle of plane shutter WB, but the increment is different.