研究结果表明，流体的熵反映了流动过程中损失的积分效果，所以从叶轮的进口至出口高温高压流体的熵整体呈现逐渐增加的趋势。此外，在叶片表面的附面层区域，由于存在较高的速度梯度，这些区域的流体熵值也较高。总体来看，越靠近轮毂位置的截面，流体的熵值越大。这与轮毂表面、叶片与内部流体之间存在相对运动有关。

The results show that the entropy of the fluid reflects the integral effect of the loss in the flow process, so the entropy of the high temperature and high pressure fluid from the inlet to the outlet of the impeller gradually increases. In addition, in the boundary layer region of the blade surface, the fluid entropy in these regions is also higher due to the high velocity gradient. In general, the closer the cross section is to the hub, the greater the entropy of the fluid. This is related to the relative motion between the hub surface, the blade and the internal fluid.