0
Research Papers: Heat Exchangers

Three-Dimensional Numerical Simulation on the Laminar Flow and Heat Transfer in Four Basic Fins of Plate-Fin Heat Exchangers

[+] Author and Article Information
Yinhai Zhu

School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, P.R.C.

Yanzhong Li1

School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, P.R.C.yzli-epe@mail.xjtu.edu.cn

1

Corresponding author.

J. Heat Transfer 130(11), 111801 (Sep 04, 2008) (8 pages) doi:10.1115/1.2970072 History: Received August 31, 2007; Revised May 14, 2008; Published September 04, 2008

In this paper, four basic fins of the plate-fin heat exchangers, rectangular plain fin, strip offset fin, perforated fin, and wavy fin, are modeled and simulated by taking account of fin thickness, thermal entry effect, and end effect. Three-dimensional numerical simulations on the flow and heat transfer in the four fins are investigated and carried out at laminar flow regime. Validity of the modeling technique is verified by comparing computational results with both corresponding experimental data and three empirical correlations from literatures. Global average Colburn factor (j factor) and friction factor (f factor) and their local 1D streamwise-average distributions along the fins are presented by introducing data reduction method. The heat transfer behaviors in both the developing and developed regions are analyzed by examining variations of the local Nusselt number along the flow direction. It is found that the thermal entry length of the four fins might be expressed in the format of Le=c1Rec2PrDh, which has the same form as the one in a circular tube.

FIGURES IN THIS ARTICLE
<>
Copyright © 2008 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

Perspective view of four basic fins in PFHE

Grahic Jump Location
Figure 2

CFD models of the four fins

Grahic Jump Location
Figure 3

Comparisons of fluid and fin surface temperature between CFD and experiment at Re=285

Grahic Jump Location
Figure 4

Comparisons of j and f factors between CFD and correlations

Grahic Jump Location
Figure 5

Comparisons of j and f factors among the four fins: (a) j factor and (b) f factor

Grahic Jump Location
Figure 6

Local streamwise-average j factor distributions along the four fins at different Re: (a) Re=132.3, (b) Re=285, (c) Re=614, and (d) Re=1323

Grahic Jump Location
Figure 7

Pressure distributions along the flow direction of four fins at different Re: (a) Re=132.3, (b) Re=285, (c) Re=614, and (d) Re=1323

Grahic Jump Location
Figure 8

Local Nusselt number distributions along flow direction: (a) plain fin, (b) strip offset fin (c) perforated fin, and (d) wavy fin

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In