Liquid Phase Evaporation on the Normal Shock Wave in Moist Air Transonic Flows in Nozzles

分类： 动力与电气工程 >> 工程热物理学 提交时间： 2017-06-26 合作期刊: 《热科学学报》

Dykas, Sawomir Szymanski, Artur Majkut, Mirosaw

摘要： This paper presents a numerical analysis of the atmospheric air transonic flow through de Laval nozzles. By nature, atmospheric air always contains a certain amount of water vapor. The calculations were made using a Laval nozzle with a high expansion rate and a convergent-divergent (CD) "half-nozzle", referred to as a transonic diffuser, with a much slower expansion rate. The calculations were performed using an in-house CFD code. The computational model made it possible to simulate the formation of the liquid phase due to spontaneous condensation of water vapor contained in moist air. The transonic flow calculations also take account of the presence of a normal shock wave in the nozzle supersonic part to analyze the effect of the liquid phase evaporation.

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