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Experimental Study on Flow Resistance Characteristics in a Bank of Circular Shaped Micro/mini Pin Fins(PDF)

南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2010年04期
Page:
41-46
Research Field:
Publishing date:

Info

Title:
Experimental Study on Flow Resistance Characteristics in a Bank of Circular Shaped Micro/mini Pin Fins
Author(s):
Lu Ling; Zhao Xiaobao; Wang Hongxuan; Zhu Xiaohua
School of Energy and Mechanical Engineering,Nanjing Normal University,Nanjing 210042,China
Keywords:
m icro /m ini pin fins;  fr iction factors;  pressure drop
PACS:
TK124
DOI:
-
Abstract:
W ith de ionized w ater as wo rking fluid, this paperm ade an exper im enta l investigation on the character istics o f flow resistance through a bank of circu la r shaped m icro- /m in-i pin fins w ith n ine d ifferent sizes at staggered and in- line a rrays over a range o fReyno lds number. And part o f exper imenta l resu lts obta ined is com pared w ith the ex isting conv entiona l sca le co rre lations. It is found that the pressure drop through m icro- /m in-i p in fin bund les increases w ith the inc rease o f volum etr ic flow ra te; the fr iction fac to rs decrease w ith the increase o f the Reyno lds number and rema in unchanged w hen theReyno lds num ber is over 500. The influence o f the he ight and the d iame ter o f them icro- /m in-i p in fins on the fr iction factors is g reat. One o f the corre lations is ab le to pred ict the friction factors accu rate ly a t som e exper im ental resu lts.

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Last Update: 2013-04-02