Numerical Study of Surface Heat Transfer Effects of Multiple Fan-Shaped Small-Scale Fins

2013 ◽  
Vol 37 (5) ◽  
pp. 523-530
Author(s):  
Ki-Hong Park ◽  
Sang Hu Park ◽  
Ju-Chul Lee ◽  
June-Kee Min ◽  
Man-Yeong Ha
Keyword(s):  
Heat Transfer ◽  
Numerical Study ◽  
Surface Heat ◽  
Small Scale ◽  
Transfer Effects ◽  
Surface Heat Transfer ◽  
Heat Transfer Effects

scholarly journals Innovative Means of Surface Blowing towards Heat Alleviation for Hypersonic Flows

2019 ◽  
Vol 2019 ◽  
pp. 1-17
Author(s):  
Mahmood Khalid ◽  
Khalid A. Juhany
Keyword(s):  
Heat Transfer ◽  
Numerical Simulation ◽  
Transfer Rate ◽  
Free Stream ◽  
Surface Heat ◽  
Hypersonic Flows ◽  
Transfer Effects ◽  
Heat Transfer Effects ◽  
High Mach ◽  
Tangential Blowing

A computational-based investigation has been carried out to examine the heat transfer effects of normal and tangential blowing on blunt surfaces exposed to high Mach number flows. Experimental results from such studies where a controlled outflow is imposed upon a surface under hypersonic conditions are few and far between. Simple 3D axisymmetric configurations supporting flat front surfaces suited to accommodate uniform frontal flow or round-nosed conical bodies with a stepped shoulder to provide uniform parallel flow to the conical surface were selected from a NASA experiment for validation purposes. Uniform outflow of 0.55 to 1.0 kg/s was applied in the presence of the prevailing free stream of M=6.8 to assess the extent of heat transfer rate alleviation. The numerical simulation confirmed the experiment that the application of outflow in both cases leads to the surface heat transfer relief.

Experimental and Numerical Study of Conjugate Heat Transfer in a Horizontal Channel Heated From Below

2001 ◽  
Vol 123 (4) ◽  
pp. 688-697 ◽  
Author(s):  
Wilson K. S. Chiu ◽  
Cristy J. Richards ◽  
Yogesh Jaluria
Keyword(s):  
Heat Transfer ◽  
Temperature Control ◽  
Conjugate Heat Transfer ◽  
Numerical Study ◽  
Chemical Vapor ◽  
Operating Conditions ◽  
Horizontal Channel ◽  
Transfer Effects ◽  
Heat Transfer Effects ◽  
Insight Into

Conjugate heat transfer has significant relevance to a number of thermal systems and techniques which demand stringent temperature control, such as electronic cooling and chemical vapor deposition. A detailed experimental and numerical study is carried out to investigate conjugate heat transfer in a common configuration consisting of a horizontal channel with a heated section. Experimental data obtained from this study provides physical insight into conjugate heat transfer effects and facilitates validation of numerical conjugate heat transfer models. The basic characteristics of the flow and the associated thermal transport are studied. The numerical model is used to carry out a parametric study of operating conditions and design variables, thus allowing for the characterization of the conjugate heat transfer effects. It is found that the numerically predicted flow field and heat transfer results validate well to experimental observations. Conjugate heat transfer is shown to significantly affect the temperature level and uniformity at the heated section’s surface, channel walls and the gas phase, thus impacting the rate of heat transfer. This study provides guidelines and fundamental insight into temperature control during the combined modes of heat transfer, with implications to various thermal manufacturing methods.

Transient Heat Transfer Effects on a Gasoline Spray Impact against Hot Surfaces: Experimental and Numerical Study

2017 ◽  
Author(s):  
Alessandro Montanaro ◽  
Luigi Allocca ◽  
Vittorio Rocco ◽  
Michela Costa ◽  
Daniele Piazzullo
Keyword(s):  
Heat Transfer ◽  
Numerical Study ◽  
Transient Heat Transfer ◽  
Transfer Effects ◽  
Heat Transfer Effects
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