Numerical simulation and analysis of the basic characteristics of the flow in the nozzle of a hot water jet engine

被引：0
|
作者：
Zhang Z. [1 ]
Chen W.-Z. [1 ]
Yan K. [1 ]
机构：
[1] China Ship Scientific Research Center, Wuxi
来源：
Chuan Bo Li Xue/Journal of Ship Mechanics | 2017年 / 21卷 / 04期
关键词：
Flash evaporation; Flow characteristics; Nozzle; Two phase flow;
D O I：
10.3969/j.issn.1007-7294.2017.04.005
中图分类号：
学科分类号：
摘要：
A flash evaporation model is established based on the evaporation-condensation model. The process of two phase flow in the nozzle of a hot water jet engine is simulated. It is found that the fluid at a high temperature and pressure flows through the nozzle with the process of phase change and expansion. The flow characteristics of the fluid in the nozzle contracted section, throat and expanded section are different. The accuracy of the model is verified by comparing with the experimental data. The effect of nozzle shapes on the flow characteristics is studied. It is found that the effects of the expansion ratio and expansion angle on the process of the phase change and expansion of the two phase flow are different. This paper helps to reveal the mechanism of the flash evaporation and the matching relationship between each parameter. It can afford a theoretical basis to design a hot water jet engine. © 2017, Editorial Board of Journal of Ship Mechanics. All right reserved.
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页码：413 / 420
页数：7
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