Effect of inlet wetness on transonic wet-steam and moist-air flows in turbomachinery
Effect of inlet wetness on transonic wet-steam and moist-air flows in turbomachinery
复制标题
DOI：
10.1016/j.ijheatmasstransfer.2017.12.001
复制
发表时间：
2018-04
影响因子：
5.2
通讯作者：
S. Yamamoto;Shota Moriguchi;Hironori Miyazawa;Takashi Furusawa
中科院分区：
文献类型：
--
作者：
S. Yamamoto;Shota Moriguchi;Hironori Miyazawa;Takashi Furusawa
本文研究了进口湿度对跨音速湿蒸汽和湿空气在涡轮机和压气机叶栅通道中流动的影响。本文首先模拟了在有入口湿度的风洞条件下，通过Bakhtar涡轮机叶栅通道的跨音速湿蒸汽流动。然后，我们预测了进气道湿度对预计通过飞机发动机和工业燃气涡轮机的进气道气流的影响。为此，我们模拟了跨音速压气机叶栅通道中的跨音速湍流空气流动，同时改变了进口湿度条件。无论是湿气流还是湿空气流，入口湿度对水滴的生长和蒸发速率都非常敏感，并对激波的位置有很大的影响。我们的研究结果表明，超过冲击的温度有效地降低了大量的小水滴密度。
This study investigates the effect of inlet wetness on transonic wet-steam and moist-air flows through turbine and compressor cascade channels. We first simulated the transonic wet-steam flows through a Bakhtar’s turbine cascade channel under wind-tunnel conditions with inlet wetness. We then predicted the effects of inlet wetness on the moist-air flows expected through an aircraft engine and an industrial gas turbine. For this purpose, we simulated the transonic moist-air flows through a transonic compressor cascade channel while changing the inlet wetness conditions. In both wet-stream and moist-air flows, the inlet wetness was quite sensitive to the growth and evaporation rates of the water droplets, and greatly influenced the shock location. Our results for moist-air flows suggest that the temperature beyond the shock is effectively decreased by a large number density of smaller water droplets.