The rectangular fire induced incident radiative heat flux on the ground with varying burner rim heights and aspect ratios

2021 ◽  
Author(s):  
Qing He ◽  
Mingyan Gu ◽  
Fei Tang ◽  
Jennifer Wen
Keyword(s):  
Heat Flux ◽  
Radiative Heat ◽  
Radiative Heat Flux ◽  
Aspect Ratios

AN ASSESSMENT OF WSGG MODEL FOR CALCULATION OF RADIATIVE HEAT FLUX IN FDS

2020 ◽  
Author(s):  
Hosein Sadeghi ◽  
Hadi Bordbar
Keyword(s):  
Heat Flux ◽  
Radiative Heat ◽  
Radiative Heat Flux ◽  
Wsgg Model

Sensitivity and applications of a new method for the simultaneous measurement of convective and radiative heat flux in underhood applications—toward multiple versions

2014 ◽  
Vol 25 (3) ◽  
pp. 035901
Author(s):  
M Khaled ◽  
A Al Shaer ◽  
M Ramadan ◽  
A Elmarakbi ◽  
F Harambat ◽  
...  
Keyword(s):  
Heat Flux ◽  
Simultaneous Measurement ◽  
Radiative Heat ◽  
New Method ◽  
Radiative Heat Flux

Nonequilibrium radiative heat flux modeling for the Huygens entry probe

2006 ◽  
Vol 111 (E7) ◽  
Author(s):  
T. E. Magin ◽  
L. Caillault ◽  
A. Bourdon ◽  
C. O. Laux
Keyword(s):  
Heat Flux ◽  
Radiative Heat ◽  
Radiative Heat Flux ◽  
Entry Probe

Handling of Collimated Irradiation on a Plane-Parallel Participating Medium

2000 ◽  
Author(s):  
Christian Proulx ◽  
Daniel R. Rousse ◽  
Rodolphe Vaillon ◽  
Jean-François Sacadura
Keyword(s):  
Heat Flux ◽  
Monte Carlo ◽  
Monte Carlo Method ◽  
Radiative Heat ◽  
Radiative Heat Flux ◽  
Scattering Media ◽  
One Dimensional ◽  
Plane Parallel ◽  
Collimated Beam ◽  
Good Agreement

Abstract This article presents selected results of a study comparing two procedures for the treatment of collimated irradiation impinging on one boundary of a participating one-dimensional plane-parallel medium. These procedures are implemented in a CVFEM used to calculate the radiative heat flux and source. Both isotropically and anisotropically scattering media are considered. The results presented show that both procedures provide results in good agreement with those obtained using a Monte Carlo method, when the collimated beam impinges normally.

Analysis of radiative heat flux at the surface

1979 ◽  
Vol 6 (5) ◽  
pp. 365-374 ◽  
Author(s):  
J Janata
Keyword(s):  
Heat Flux ◽  
Radiative Heat ◽  
Radiative Heat Flux

scholarly journals Dynamic consequences of nonlinear radiative heat flux and heat generation/absorption effects in cross-diffusion flow of generalized micropolar nanofluid

2021 ◽  
pp. 101451
Author(s):  
M. Ijaz Khan ◽  
Kamel Al-Khaled ◽  
Sami Ullah Khan ◽  
Taseer Muhammad ◽  
Hassan Waqas ◽  
...  
Keyword(s):  
Heat Flux ◽  
Heat Generation ◽  
Radiative Heat ◽  
Radiative Heat Flux ◽  
Diffusion Flow ◽  
Cross Diffusion ◽  
Micropolar Nanofluid ◽  
Nonlinear Radiative Heat Flux

Partitioning measurements of convective and radiative heat flux

2015 ◽  
Vol 84 ◽  
pp. 827-838 ◽  
Author(s):  
Thomas Vega ◽  
Rachel A. Wasson ◽  
Brian Y. Lattimer ◽  
Thomas E. Diller
Keyword(s):  
Heat Flux ◽  
Radiative Heat ◽  
Radiative Heat Flux

Spectral Radiative Heat Transfer Analysis of the Planar SOFC

2004 ◽  
Author(s):  
David L. Damm ◽  
Andrei G. Fedorov
Keyword(s):  
Heat Transfer ◽  
Heat Flux ◽  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Radiative Heat Transfer ◽  
Radiative Heat ◽  
Solid Oxide ◽  
Radiative Properties ◽  
Radiative Heat Flux ◽  
Oxide Fuel

Thermo-mechanical failure of components in planar-type solid oxide fuel cells (SOFCs) depends strongly on the local temperature gradients at the interfaces of different materials. Therefore, it is of paramount importance to accurately predict the temperature fields within the stack, especially near the interfaces. Because of elevated operating temperatures (of the order of 1000 K or even higher), radiation heat transfer could become a dominant mode of heat transfer in the SOFCs. In this study, we extend our recent work on radiative effects in solid oxide fuel cells (Journal of Power Sources, Vol. 124, No. 2, pp. 453–458) by accounting for the spectral dependence of the radiative properties of the electrolyte material. The measurements of spectral radiative properties of the polycrystalline yttria-stabilized zirconia (YSZ) electrolyte we performed indicate that an optically thin approximation can be used for treatment of radiative heat transfer. To this end, the Schuster-Schwartzchild two-flux approximation is used to solve the radiative transfer equation (RTE) for the spectral radiative heat flux, which is then integrated over the entire spectrum using an N-band approximation to obtain the total heat flux due to thermal radiation. The divergence of the total radiative heat flux is then incorporated as a heat sink into a 3-D thermo-fluid model of a SOFC through the user-defined function utility in the commercial FLUENT CFD software. The results of sample calculations are reported and compared against the baseline cases when no radiation effects are included and when the spectrally gray approximation is used for treatment of radiative heat transfer.

scholarly journals Modulation and splitting of three-body radiative heat flux via graphene/SiC core-shell nanoparticles

2019 ◽  
Vol 140 ◽  
pp. 80-87 ◽  
Author(s):  
Jinlin Song ◽  
Qiang Cheng ◽  
Zixue Luo ◽  
Xinping Zhou ◽  
Zhuomin Zhang
Keyword(s):  
Heat Flux ◽  
Radiative Heat ◽  
Radiative Heat Flux ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Three Body ◽  
Core Shell Nanoparticles
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