Flow structure in critical flow Venturi nozzle and its effect on the flow rate

被引：5

作者：

von Lavante, E. ^{[1
]}

Kaya, H. ^{[1
]}

Winzoesch, F. ^{[1
]}

Brinkhorst, S. ^{[1
]}

Mickan, B. ^{[2
]}

机构：

[1] Univ Duisburg Essen, Fac Engn, D-47057 Duisburg, Germany

[2] Phys Tech Bundesanstalt, Braunschweig, Germany

来源：

FLOW MEASUREMENT AND INSTRUMENTATION | 2015年 / 44卷

关键词：

Critical flow Venturi nozzle; Shock structure; Unsteady flow; Discharge coefficient; Unchoking;

D O I：

10.1016/j.flowmeasinst.2014.12.003

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The flow fields in toroidal Venturi-nozzles, shaped according to the ISO-9300 Standard, have been investigated using numerical flow simulation. The present study was aimed at clarifying some of the phenomena associated with unchoking the flow in the throat. To this end, the shock structure has been studied for different Reynolds numbers and exit pressure ratios. The flow simulations were carried out in two and three dimensions. The flow fields were always unsteady, displaying a complex shock-boundary layer interaction. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：97 / 106

页数：10