Study　on　Friction　Factor　of　Developing　and　Developed　Laminnr　Flow　in　Annular－Sector　Ducts

作     者：M.J. Lin W.Q. Tao (School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, Shabby 710049, China)S.S. Lue (Institute of Chemical Engineering, Southern-China University of Science and Technology, Guangzhou,Guangdong, China) 

作者机构：School of Energy and Power Engineering Xi’an Jiaotong University Xi’an China Institute of Chemical Engineering Southern-China University of Science and Technology Guangzhou China 

出 版 物：《Journal of Thermal Science》 (热科学学报（英文版）)

年 卷 期：1995年第4卷第3期

页      面：180-184页

核心收录：

学科分类：080703[工学-动力机械及工程] 08[工学] 0807[工学-动力工程及工程热物理] 

主　　题：laminar flow friction factor. 

摘      要：The pressure drops of laminar developing and developed flow in Hnnular-sector ducts with small round corner have been investigated experimentally. Numerical simulation has been performed to study the effect of the small round corner on the friction factor in the developed region. It has been found that with the increase in corner radius, the value of fRe decreases. In the range of rc/ro from 0.031 to 0.12,the decrease in fRe varies from 0.048% to 0.1% for the five apex angle computed.