Numerical simulation and experimental validation of internal nozzle flow characteristic of injector

被引：0

作者：

Xie Y. ^{[1
]}

Luo Q.-Y. ^{[1
]}

Ma J. ^{[1
]}

Xu C.-S. ^{[1
]}

机构：

[1] Institute of Power-Driven Machinery and Vehicle Engineering, Zhejiang University, Hangzhou

来源：

Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science) | 2016年 / 50卷 / 01期

关键词：

Cavitation; Engine; Phase contrast imaging; X-ray;

D O I：

10.3785/j.issn.1008-973X.2016.01.016

中图分类号：

学科分类号：

摘要：

The X-ray phase contrast imaging technique was used to analyze the flow characteristics of internal nozzle in order to verify the simulation results. The mass flow, cavitation distribution, effective velocity at the outlet and non-dimensional flow coefficients under different injection pressure conditions were considered based on the CFD software simulation combined with the experimental results. Results show that X-ray phase contrast imaging technique contributes to the research, and the results accord with the simulation results. Critical super cavitation conditions are achieved easier when injection pressure rises. The growth of effective velocity at the outlet is slightly bigger than that of volume flow. Reynolds number shows positive correlation to the injection pressure, while the cavitation number decreases exponentially with increases in the Reynolds numbers. The discharge coefficient increases as the Reynolds number rises until it gets stable. © 2016, Zhejiang University. All right reserved.

引用

页码：111 / 115and165

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