Affiliation:
1. Mechanical Engineering Department, Texas A&M University, College Station, Texas 77843
Abstract
An experimental study of fully developed turbulent air flow in square ducts with two opposite rib-roughened walls was performed to determine the effects of the rib pitch-to-height and rib height-to-equivalent diameter ratios on friction factor and heat transfer coefficients with Reynolds number varied between 7000 and 90,000. Based on the four-sided, smooth-duct correlation and the four-sided, ribbed-duct similarity law, a general prediction method for average friction factor and average Stanton number in rectangular ducts with two smooth and two opposite ribbed walls was developed. There was good agreement between prediction and measurements. The results may be useful for gas turbine blade internal cooling design.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Cited by
327 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献