文献类型：期刊文献

中文题名：Experimental Study of Pseudoplastic Fluid Flows in a Square Duct of Strong Curvature

英文题名：Experimental Study of Pseudoplastic Fluid Flows in a Square Duct of Strong Curvature

作者：Ma Kun[1];Yuan Shiwei[1];Chang Huaijian[1];Lai Huanxin[1]

机构：[1]E China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

年份：2014

卷号：23

期号：4

起止页码：359

中文期刊名：Journal of Thermal Science

外文期刊名：JOURNAL OF THERMAL SCIENCE

收录：;EI(收录号：20143318059421);Scopus;WOS:【SCI-EXPANDED(收录号:WOS:000338408500008)】；CSCD:【CSCD2013_2014】；

基金：This work was funded by the National Natural Science Foundation of China under Grant No. 51176048.

语种：英文

中文关键词：Curved duct flows; Pseudoplastic fluids; Flow fields; Experimental study

外文关键词：Curved duct flows; Pseudoplastic fluids; Flow fields; Experimental study

摘要：In this paper, laminar and turbulent flows of pseudoplastic fluids(0.1% and 0.2% by weight aqueous solutions of carboxymethylcellulose) in a square duct of strong curvature were measured using an ultrasonic Doppler velocimetry and microphones. Streamwise velocity in cross-sections of the duct and the fluctuating pressure on walls were measured for different flow rates. The velocity contours and their development along the duct were presented and compared with benchmark experiments by Taylor, Whitelaw and Yianneskis(1982) which were for the laminar and turbulent flows of water. The spectra of fluctuating wall pressures were also presented and analyzed. The objective of this paper was to provide a basis for understanding the pseudoplastic fluid flows in curved ducts. The results were also intended for use in the further development of numerical methods and turbulence models for shear-thinning fluids.
In this paper, laminar and turbulent flows of pseudoplastic fluids (0.1% and 0.2% by weight aqueous solutions of carboxymethylcellulose) in a square duct of strong curvature were measured using an ultrasonic Doppler velocimetry and microphones. Streamwise velocity in cross-sections of the duct and the fluctuating pressure on walls were measured for different flow rates. The velocity contours and their development along the duct were presented and compared with benchmark experiments by Taylor, Whitelaw and Yianneskis (1982) which were for the laminar and turbulent flows of water. The spectra of fluctuating wall pressures were also presented and analyzed. The objective of this paper was to provide a basis for understanding the pseudoplastic fluid flows in curved ducts. The results were also intended for use in the further development of numerical methods and turbulence models for shear-thinning fluids.