Study of turbulent natural convection coupled with thermal radiation in a vertical cavity having a large form factor

Heat Transfer ◽  
2020 ◽  
Vol 50 (1) ◽  
pp. 145-157
Author(s):  
Imène Rahmoune ◽  
Saadi Bougoul
Keyword(s):  
Form Factor ◽  
Natural Convection ◽  
Thermal Radiation ◽  
Turbulent Natural Convection ◽  
Large Form ◽  
Vertical Cavity

Laminar and turbulent natural convection combined with surface thermal radiation in a square cavity with a glass wall

2008 ◽  
Vol 47 (12) ◽  
pp. 1630-1638 ◽  
Author(s):  
J. Xamán ◽  
J. Arce ◽  
G. Álvarez ◽  
Y. Chávez
Keyword(s):  
Natural Convection ◽  
Thermal Radiation ◽  
Square Cavity ◽  
Glass Wall ◽  
Turbulent Natural Convection

Numerical simulation of turbulent natural convection of nanofluid with thermal radiation inside a tall enclosure under the influence of magnetohydrodynamic

2018 ◽  
Vol 48 (2) ◽  
pp. 520-538 ◽  
Author(s):  
Ahmad Reza Rahmati ◽  
Mojtaba Sepehrnia ◽  
Mahdi Motamedian
Keyword(s):  
Numerical Simulation ◽  
Natural Convection ◽  
Thermal Radiation ◽  
Turbulent Natural Convection

Effect of the surface thermal radiation on turbulent natural convection in tall cavities of façade elements

2008 ◽  
Vol 45 (2) ◽  
pp. 177-185 ◽  
Author(s):  
J. P. Xamán ◽  
J. F. Hinojosa ◽  
J. J. Flores ◽  
R. E. Cabanillas
Keyword(s):  
Natural Convection ◽  
Thermal Radiation ◽  
Turbulent Natural Convection

scholarly journals Indoor Turbulent Natural Convection Heat Transfer with Thermal Radiation in Rooms with Porous Building Envelopes

2017 ◽  
Vol 205 ◽  
pp. 2333-2340
Author(s):  
Yuancheng Wang ◽  
Yaofang Yu ◽  
Zifeng Lu ◽  
Andi Qu ◽  
Yiyi Yun
Keyword(s):  
Heat Transfer ◽  
Natural Convection ◽  
Thermal Radiation ◽  
Convection Heat Transfer ◽  
Natural Convection Heat Transfer ◽  
Convection Heat ◽  
Building Envelopes ◽  
Turbulent Natural Convection

Interaction of turbulent natural convection and surface thermal radiation in inclined square enclosures

2007 ◽  
Vol 44 (10) ◽  
pp. 1153-1170 ◽  
Author(s):  
Anil Kumar Sharma ◽  
K. Velusamy ◽  
C. Balaji
Keyword(s):  
Natural Convection ◽  
Thermal Radiation ◽  
Turbulent Natural Convection

Computational fluid dynamics and experimental study of turbulent natural convection with surface thermal radiation in a cubic enclosure

2020 ◽  
Vol 31 (05) ◽  
pp. 2050065
Author(s):  
J. M. A. Navarro ◽  
J. F. Hinojosa ◽  
I. Hernández-López
Keyword(s):  
Heat Transfer ◽  
Fluid Dynamics ◽  
Experimental Data ◽  
Experimental Study ◽  
Computational Fluid Dynamics ◽  
Natural Convection ◽  
Thermal Radiation ◽  
Turbulence Models ◽  
Numerical Results ◽  
Turbulent Natural Convection

This paper reports a computational fluid dynamics and experimental study to analyze the effect of surface thermal radiation on the turbulent natural convection in a closed cubic cavity. Experimental and numerical results are compared for low and high wall emissivities. Experimental temperature profiles were obtained at six different depths and heights consisting of 14 thermocouples each. Several turbulence models were evaluated against experimental data. It was found that renormalized [Formula: see text]-[Formula: see text] and standard [Formula: see text]-[Formula: see text] turbulence models present the best agreement with the experimental data for emissivities of walls of 0.98 and 0.03, respectively. Thus, the numerical results of temperature fields and flow patterns were obtained with these models. From the results, it was found that the effect of thermal radiation on experimental heat transfer coefficients is significantly, increased between 48.7% ([Formula: see text]) and 50.16% ([Formula: see text]), when the emissivity of the walls increases from 0.03 to 0.98. Therefore, the radiative exchange should not be neglected in heat transfer calculations in cubic enclosures, even if the temperature difference between heated wall and cold wall is relatively small (between 15 and 30[Formula: see text]K).

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