Use of baffles for heat transfer reduction from a cylinder in cross flow

Authors
Citation
Bak. Abu-hijleh, Use of baffles for heat transfer reduction from a cylinder in cross flow, NUM HEAT A, 40(4), 2001, pp. 421-443
Citations number
11
Categorie Soggetti
Mechanical Engineering
Journal title
NUMERICAL HEAT TRANSFER PART A-APPLICATIONS
ISSN journal
10407782 → ACNP
Volume
40
Issue
4
Year of publication
2001
Pages
421 - 443
Database
ISI
SICI code
1040-7782(200109)40:4<421:UOBFHT>2.0.ZU;2-I
Abstract
The problem of cross-flow forced heat transfer from a horizontal cylinder w ith multiple equally spaced low conductivity baffles on its outer surface w as investigated numerically. The effect of several combinations of baffles and baffle heights on the average Nusselt number was studied over a wide ra nge of Reynolds numbers. The results showed that there was an optimal numbe r of baffles for a minimum Nusselt number for a given value of baffle heigh t and Reynolds number. Short baffles slightly increased the Nusselt number at small Reynolds number values.