constant wall heat fluxMeasurements and predictions are presented which investigate the effects of thermal boundary condition on heat transfer in the turbulent rough-wall boundary layer. Stanton number measurements are reported for the turbulent flow of air over rough plates with a variety of thermal ...
Those thermal boundary and initial conditions with finite axial heat conduction within the fluid are described in Figs. 17 and 23 and the associated discussion. Axial heat conduction in a “thin” wall could be important for axially constant heat flux boundary conditions. The resulting thermal ...
where λi is the thermal conductivity of each material that composes the enclosure in W/(m K), ei is the thickness of each layer of material in meters, and Ri and Re are the surface thermal resistances corresponding to the interior and exterior air, respectively, in m2 K/W. The above...
We report high-resolution local temperature measurements in the upper and the lower boundary layer of turbulent Rayleigh-BéLenard (RB) convection in air (Pr = 0.71) complemented by local heat flux measurements at the surface of both horizontal plates. Two series of measurements were undertaken -...
To be specific, the boundary conditions are constant, and the modulation of material parameters is periodic with time to ensure a stable (time-harmonic) field. No external mass flux exists: ρv · n = 0, where n is the unit normal vector at the system boundary. In time-modulated ...
The graphene foam is sandwiched between two layers of material with known thermal conductivity (i.e., the reference layers) and the three-layer structure is placed between two adapter bars that span from a heat source to the heat sink during property testing. Both sides have embedded cartridge...
thegraphicswindow.Youcanalsocopyorcloneanyboundaryconditionor solution. Modelingconduction Thethermalsolverusesafinitevolumeformulationformodelingheat conductionbetweenelementsthatsharenodes,providedthat: Thermalconductivityandspecificheatpropertiesaredefinedforthe ...
A theoretical investigation of the influence of variable viscosity and thermal conductivity on theMHD boundary layer flow due to a point sink is presented... M Choudhury 被引量: 64发表: 2011年 Convective slip flow of rarefied fluids over a wedge with thermal jump and variable transport properties...
the RTE, that integration may lead to a significant increase of computational time, particularly for non-gray media, and to additional complexity when a finer grid is used for the fluid flow than for radiation calculations, e.g., to comply with the requirements of fine boundary layer ...
The total heat flux Q through the whole cross-section of the layer (parallel to the boundary planes) per unit time is equal to the product qS of the flux q per unit area and the total area S of the cross-section. Using the relation between q and the temperature gradient, we can writ...