University of Illinois Urbana-Champaign

Large-Eddy Simulations of Flow and Heat Transfer in Complex Three-Dimensional Multilouvered Fins

Tafti, D.K.; Zhang, X.; Huang, W.; Wang, G.

Content Files
TR165.pdf

Permalink

https://hdl.handle.net/2142/11913

Description

Title
Large-Eddy Simulations of Flow and Heat Transfer in Complex Three-Dimensional Multilouvered Fins
Author(s)
  • Tafti, D.K.
  • Zhang, X.
  • Huang, W.
  • Wang, G.
Issue Date
2000-04
Keyword(s)
louvered-fin heat exchangers
Date of Ingest
2009-05-26T22:50:07Z
Abstract
The paper describes the computational procedure and results from large-eddy simulations in a complex three-dimensional louver geometry. The three-dimensionality in the louver geometry occurs along the height of the fin, where the angled louver transitions to the flat landing and joins with the tube surface. The transition region is characterized by a swept leading edge and decreasing flow area between louvers. Preliminary results show a high energy compact vortex jet forming in this region. The jet forms in the vicinity of the louver junction with the flat landing and is drawn under the louver in the transition region. Its interaction with the surface of the louver produces vorticity of the opposite sign, which aids in augmenting heat transfer on the louver surface. The top surface of the louver in the transition region experiences large velocities in the vicinity of the surface and exhibits higher heat transfer coefficients than the bottom surface.
Publisher
Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign.
Series/Report Name or Number
Air Conditioning and Refrigeration Center TR-165
Type of Resource
text
Genre of Resource
Technical Report
Language
en
Permalink
http://hdl.handle.net/2142/11913
Sponsor(s)/Grant Number(s)
Air Conditioning and Refrigeration Project 94

Owning Collections

Technical Reports - Air Conditioning and Refrigeration Center PRIMARY