Experimental and numerical study of a choke valve in a turbulent flow

被引：21

作者：

Huovinen, M. ^{[1
]}

Kolehmainen, J. ^{[2
]}

Koponen, P. ^{[1
]}

Nissila, T. ^{[1
]}

Saarenrinne, P. ^{[2
]}

机构：

[1] VTT Tech Res Ctr Finland Ltd, Ctr Metrol MIKES, Kajaani 87100, Finland

[2] Tampere Univ Technol, Tampere 33720, Finland

来源：

FLOW MEASUREMENT AND INSTRUMENTATION | 2015年 / 45卷

关键词：

Choke valve; Laser Doppler velocimetry; Butterfly valve; Flow rate estimation; Numerical simulation; Turbulence modelling; BUTTERFLY VALVE;

D O I：

10.1016/j.flowmeasinst.2015.06.005

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This study investigates a flow past a choke valve by experimental and numerical means. The flow profile after a choke valve with high Reynolds number of approximately 1,000,000 was measured using a LDV and computed using RANS simulations. Two turbulence models were used for the simulation, namely k-epsilon and k-omega turbulence models. It was found out that the k-omega model produces more similar results to LDV measurements than the k-epsilon model. This study also reports citable flow profiles past a choke valve computed by both turbulence models. Furthermore, the accuracy of the LDV based volume flow measurements was also discussed. The volume flow estimates were compared with simulation results, and with flow meter results. Results showed that LDV can be used for volume flow estimation even in unsymmetrical situations, such as after the choke valve, with error ranging from 0.3% to 2.6%. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：151 / 161

页数：11