International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
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Volume 174 - Issue 25 |
Published: Mar 2021 |
Authors: Yasin K. Salman, Jalal M. Jalil, Ahmed F. Khudheyer |
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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 }, year = { 2021 }, volume = { 174 }, number = { 25 }, pages = { 44-53 }, doi = { 10.5120/ijca2021921172 }, publisher = { Foundation of Computer Science (FCS), NY, USA } }
%0 Journal Article %D 2021 %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%T %J International Journal of Computer Applications %V 174 %N 25 %P 44-53 %R 10.5120/ijca2021921172 %I Foundation of Computer Science (FCS), NY, USA
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.