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Reseach Article

Experimental Study of Mixed Convection Heat Transfer to Thermally Developing Air Flow in a Horizontal Rectangular Duct

by Yasin K. Salman, Jalal M. Jalil, Ahmed F. Khudheyer
International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 174 - Number 25
Year of Publication: 2021
Authors: Yasin K. Salman, Jalal M. Jalil, Ahmed F. Khudheyer
10.5120/ijca2021921172

Yasin K. Salman, Jalal M. Jalil, Ahmed F. Khudheyer . Experimental Study of Mixed Convection Heat Transfer to Thermally Developing Air Flow in a Horizontal Rectangular Duct. International Journal of Computer Applications. 174, 25 ( Mar 2021), 44-53. DOI=10.5120/ijca2021921172

@article{ 10.5120/ijca2021921172,
author = { Yasin K. Salman, Jalal M. Jalil, Ahmed F. Khudheyer },
title = { Experimental Study of Mixed Convection Heat Transfer to Thermally Developing Air Flow in a Horizontal Rectangular Duct },
journal = { International Journal of Computer Applications },
issue_date = { Mar 2021 },
volume = { 174 },
number = { 25 },
month = { Mar },
year = { 2021 },
issn = { 0975-8887 },
pages = { 44-53 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume174/number25/31833-2021921172/ },
doi = { 10.5120/ijca2021921172 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-07T00:23:05.954823+05:30
%A Yasin K. Salman
%A Jalal M. Jalil
%A Ahmed F. Khudheyer
%T Experimental Study of Mixed Convection Heat Transfer to Thermally Developing Air Flow in a Horizontal Rectangular Duct
%J International Journal of Computer Applications
%@ 0975-8887
%V 174
%N 25
%P 44-53
%D 2021
%I Foundation of Computer Science (FCS), NY, USA
Abstract

This paper describes the case of combined free and forced convection heat transfer to a thermally developing air flow in a horizontal rectangular duct which has been studied experimentally for laminar internal flow. The heated surfaces were subjected to a constant heat flux while the duct short sides were kept unheated, for three cases lower, upper side heated only and both sides heated with constant heat flux and for five-duct angles of inclination 0° (horizontal). In the experimental study, the heat flux applied to the heated surfaces varied from 40 to 400 W/m2. This provides a modified Grashof number varied from 2.38*106 to 2.8*108 respectively, while the Reynolds number varied from 800 to 2100. Surface temperature, local heat transfer results reveal a significant effect of buoyancy force created by natural convection on the heat transfer process with the buoyancy makes the thermal boundary layer developed early in comparison with pure forced convection.

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Index Terms

Computer Science
Information Sciences

Keywords

Mixed Convection Heat Transfer Thermally Developing flow constant heat flux horizontal Rectangular Duct