Analysis of compressible flow at the outlet of a convergent - divergent nozzle

被引：1

作者：

Douaiba, Benaouda ^{[1
]}

Baghlad, Fadia ^{[1
]}

Hamel, Mohammed ^{[1
]}

机构：

[1] Univ Sci & Technol Oran, Fac Mech Engn, Lab Appl Mech, USTOMB Mnaouar, BP 1505, Oran 31000, Algeria

来源：

DESALINATION AND WATER TREATMENT | 2022年 / 279卷

关键词：

Nozzle; Compressible flow; STAR-CCM plus; Expansion; Shock wave;

D O I：

10.5004/dwt.2022.29102

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In the present study, a numerical investigation of outflow regimes of a convergent-divergent noz-zle was carried out. This analysis was based on a section ratio of nozzle area ration = 1.66 and on the influence of different expansion ratios nozzle pressure ration (NPR) on the downstream flow properties. Low and high expansions rates were examined, and two intervals were chosen, the first NPRL [1.27, 1.4], while the second was NPRH [5.5, 10]. The CFD technique was used to simulate 2D CD nozzle outflow of a supersonic jet engine. The NPRL results show the phenomenon of normal shock waves occurred when the back pressure was less than ambient pressure. However the NPRH results show Mach diamond patterns at the jet plume region. The obtained results were compared with experimental data.

引用

页码：160 / 163

页数：4

共 12 条

[1]

Ekanayake E.M., 2013, APPL MATH

[2] The Jet Noise of a Convergent-Divergent Nozzle [J].