MASS-TRANSFER AT SMOOTH AND ROUGH SURFACES IN A CIRCULAR COUETTE-FLOW

被引：14

作者：

GRIFOLL, J ^{[1
]}

FARRIOL, X ^{[1
]}

GIRALT, F ^{[1
]}

机构：

[1] UNIV BARCELONA,FAC CIENCIES QUIM,DEPT ENGN QUIM,E-43071 TARRAGONA,SPAIN

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 1986年 / 29卷 / 12期

关键词：

D O I：

10.1016/0017-9310(86)90009-8

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

An extended set of mass transfer measurements at smooth and rough surfaces in a circular Couette flow has been carried out in the range 20,000 less than Re less than 900,000 and 770 less than Sc less than 8,000. Mass transfer measurements for smooth rotating cylinders are in agreement with previous results and confirm that the Sherwood number depends on the 1/3 power of the Schmidt number. Mass transfer coefficients at rough cylinders show a similar behavior with Reynolds number as that observed for duct flows and the experimental results for both systems can be generalized in the fully rough region for equally rough surfaces when the maximum velocity of the flow and the surface roughness height are taken as the characteristic velocity and length scale in the Stanton and Reynolds numbers.

引用

页码：1911 / 1918

页数：8

共 21 条

[1] MASS-TRANSFER IN TURBULENT PIPE-FLOW MEASURED BY ELECTROCHEMICAL METHOD [J].