不同去旋角度进气共转盘腔内流动与换热研究

以带有去旋喷嘴的共转盘腔为研究对象,运用RNG k-ε湍流模型,分别对3种喷嘴角度（90°、60°、30°）的3维模型进行了数值计算,揭示了去旋角度对盘腔内气体切向速度、盘腔内压降和转盘表面换热的影响规律。研究结果表明：随着去旋角度的减小,盘腔内气体的切向速度减小,盘腔内压降减小,转盘表面的局部努赛尔数Nur增大。

Investigation on Flow and Heat Transfer inside Co-rotating Disc Cavity with Different De-swirl Angle

The 3D numerical simulation of the co-rotating disc cavity with the de-swirl nozzles was carried by the RNG k-ε turbulence model with three kinds of de-swirl angles（90°,60°,and 30°）.The influence of the de-swirl angle on the tangential velocity,the pressure loss in the disc cavity and the heat transfer of the rotational disc is discoverd.The results show that as the de-swirl angle reduces,the flow tangential velocity in the disc cavity decreases,the pressure loss in the disc cavity reduces,the local Nur number of the rotational disc surface increases.