This study investigated the wall radiative heat flux (WRHF) of air- and oxy-coal combustion in a simple hexahedral furnace and in a 100 MWe single-wall-fired boiler using computational modeling. The hexahedral furnace had similar operation conditions with the boiler, but the coal combustion was...
Radiative Heat Deposition Analysis of Fusion Reactor First Wall by Monte Carlo Transport Codedoi:10.1080/18811248.1981.9733257Heat flux distribution on the first wall of a fusion reactor due to the thermal radiation from high temperature protection wall placed in front of the first wall was analyzed....
If, for a start, I want an adiabatic wall, the zeroGradient boundary condition as in the hotRadiationRoom tutorial does give zero convective heat flux at the wall, but it does not touch the radiative heat flux. Can this be implemented in some other way, if externalWallHeatF...
The significance of this length scale has been verified by the experimental results for flame heights and heat fluxes and by observations. A similarity correlation for flame heights between the two parallel walls were developed in this research. Similarity correlations for radiative heat fluxes on ...
qr Name of the radiative field no none qrRelaxation Relaxation factor for radiative field no 1 kappaMethod Inherited from temperatureCoupledBase inherited kappa Inherited from temperatureCoupledBase inherited Example of the boundary condition specification: <patchName> { type externa...
Again, radiation enters only as a boundary condition, with the transparent medium itself occupying the enclosure governing the radiative transfer. In both types of applications radiation and conduction-convection are interdependent, i.e., a change in radiative heat flux disturbs the overall energy ...
Effects of sample orientation on radiative ignition radiant flux for autoignition were studied using a CO 2 laser and a gas fired radiant panel as external radiant sources with PMMA and red oak as ... T Kashiwagi - 《Combustion & Flame》 被引量: 73发表: 1982年 ...
The use of the two-equation model requires information on additional modes of heat transfer that will emerge to account for the energy interaction between the phases. These modes are of radiative and convective natures, however, the convective heat transfer mode will be brought up here since force...
Radiative heat flux (Wm−2) \(q_{s}\) : Wall heat flux (Wm−2) \(R\) : Radiation parameter \(\text{Re}_{x}\) : Local Reynolds number \(T\) : Temperature (K) \(T_{s}\) : Temperature of the left side of surface (K) \(T_{\infty }\) : Temperature in ...
Besides, PCM may lead to a more uniform temperature between surfaces and air temperature, reducing thermal discomfort from radiative heat. In recent years there has been increased research on the application of PCM in buildings for better thermal comfort. Jamil et al. [9] investigated the ...