Effect of mounting systems on heat transfer from inclined cylinders in cross-flow

Bremhorst K. (1981) Effect of mounting systems on heat transfer from inclined cylinders in cross-flow. International Journal of Heat and Mass Transfer, 24 2: 243-250. doi:10.1016/0017-9310(81)90032-6


Author Bremhorst K.
Title Effect of mounting systems on heat transfer from inclined cylinders in cross-flow
Journal name International Journal of Heat and Mass Transfer   Check publisher's open access policy
ISSN 0017-9310
Publication date 1981-01-01
Sub-type Article (original research)
DOI 10.1016/0017-9310(81)90032-6
Volume 24
Issue 2
Start page 243
End page 250
Total pages 8
Subject 1507 Transportation and Freight Services
2100 Energy
2210 Mechanical Engineering
Abstract Previous studies have shown that heat conduction to mounting systems significantly affects the heat transfer characteristics of cylinders in cross-flow unless the length-to-diameter ratio is large, typically over 1000. For inclined cylinders in cross-flow an additional effect exists due to significant aerodynamic interference of the cylinder supports with the flow. The effective cooling velocity, C, of inclined cylinders such as hot-wire anemometer sensors is frequently described in terms of the velocity with the cylinder normal to the flow, U, and the angle between the cylinder normal and the flow, α, by C = U(cos2 α + K2 sin2 α)0.5 Extensive investigations have indicated that k2 is predominantly a function of the cylinder length-to-diameter ratio. Arguments are presented which show that the k2 term describes the effective turning of the flow through a small angle. This interpretation shows that for narrow support spacings, flow channelling by the supports, which causes the flow to be more normal to the cylinder, gives the apparent increase in cooling above the 'cosine law' so frequently reported. New measurements with inclined hot-wire anemometers show that when interference with the flow over the cylinder is expected to be a minimum, that is, at large length-to-diameter ratios, typically larger than 1000, k2 assumes negative values.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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Citation counts: TR Web of Science Citation Count  Cited 7 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 9 times in Scopus Article | Citations
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Created: Tue, 28 Jun 2016, 10:27:48 EST by System User