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Laminar fluid flow and heat transfer in a fin-tube heat exchanger with vortex generators

Abstract

Development of heat transfer enhancement techniques for fin-tube heat exchangers has great importance in industry. In recent years, heat transfer augmentation by vortex generators has been considered for use in plate fin-tube heat exchangers. The present work describes a numerical investigation about the influence of delta winglet pairs of vortex generators on the flow structure and heat transfer of a plate fin-tube channel. The Navier-Stokes and Energy equations are solved by the finite volume method using a boundary-fitted coordinate system. The influence of vortex generators parameters such as position, angle of attack and aspect ratio were investigated. Local and global influences of vortex generators in heat transfer and flow losses were analyzed by comparison with a model using smooth fin. The results indicate great advantages of this type of geometry for application in plate fin-tube heat exchangers, in terms of large heat transfer enhancement and small pressure loss penalty. (author)
Authors:
Yanagihara, J I; Rodriques, R Jr [1] 
  1. Polytechnic School of Univ. of Sao Paolo, Sao Paolo (Brazil). Dept. of Mechanical Engineering
Publication Date:
Dec 31, 1996
Product Type:
Conference
Report Number:
TKK-V-B117; CONF-9606318-
Reference Number:
SCA: 200101; 420400; PA: FI-97:003291; EDB-97:060555; SN: 97001773785
Resource Relation:
Conference: 3. colloquium on process simulation, Espoo (Finland), 11-14 Jun 1996; Other Information: PBD: 1996; Related Information: Is Part Of The 3rd colloquium on process simulation. Proceedings; Jokilaakso, A. [ed.]; PB: 359 p.
Subject:
20 FOSSIL-FUELED POWER PLANTS; 42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; HEAT EXCHANGERS; COMPUTERIZED SIMULATION; HEAT TRANSFER; EFFICIENCY; LAMINAR FLOW; FLUID MECHANICS
OSTI ID:
464554
Research Organizations:
Helsinki Univ. of Technology, Otaniemi (Finland). Lab. of Materials Processing and Powder Metallurgy
Country of Origin:
Finland
Language:
English
Other Identifying Numbers:
Other: ON: DE97740683; ISBN 951-22-3092-5; TRN: FI9703291
Availability:
OSTI as DE97740683
Submitting Site:
FI
Size:
pp. 27-40
Announcement Date:

Citation Formats

Yanagihara, J I, and Rodriques, R Jr. Laminar fluid flow and heat transfer in a fin-tube heat exchanger with vortex generators. Finland: N. p., 1996. Web.
Yanagihara, J I, & Rodriques, R Jr. Laminar fluid flow and heat transfer in a fin-tube heat exchanger with vortex generators. Finland.
Yanagihara, J I, and Rodriques, R Jr. 1996. "Laminar fluid flow and heat transfer in a fin-tube heat exchanger with vortex generators." Finland.
@misc{etde_464554,
title = {Laminar fluid flow and heat transfer in a fin-tube heat exchanger with vortex generators}
author = {Yanagihara, J I, and Rodriques, R Jr}
abstractNote = {Development of heat transfer enhancement techniques for fin-tube heat exchangers has great importance in industry. In recent years, heat transfer augmentation by vortex generators has been considered for use in plate fin-tube heat exchangers. The present work describes a numerical investigation about the influence of delta winglet pairs of vortex generators on the flow structure and heat transfer of a plate fin-tube channel. The Navier-Stokes and Energy equations are solved by the finite volume method using a boundary-fitted coordinate system. The influence of vortex generators parameters such as position, angle of attack and aspect ratio were investigated. Local and global influences of vortex generators in heat transfer and flow losses were analyzed by comparison with a model using smooth fin. The results indicate great advantages of this type of geometry for application in plate fin-tube heat exchangers, in terms of large heat transfer enhancement and small pressure loss penalty. (author)}
place = {Finland}
year = {1996}
month = {Dec}
}