Direct Sim of Thermal Move Through Sintered Wick Microstructures

Posted by bubucuo on March 7, 2014 at 3:35 AM

Porous sintered microstructures are essential that you the functioning of passive heat transport devices such as heat pipes. The topology and microstructure for the porous wick play a critical role in determining the thermal performance concerning such devices. Three sintered copper wick samples in commercial heat pipes are characterized from this work in terms of their thermal transport properties-porosity, effective thermal conductivity, permeability, and also interfacial heat transfer coefficient. The available for public use samples about nearly identical porosities (much like 61% open volume high molecular polymer filter ) are CT scanned at 5.5 mu m resolution, and additionally the resulting image stack is reconstructed to develop high-quality finite volume meshes representing the solid interstitial pore regions, with a conformal mesh with the interface separating this pair of regions. The resulting mesh is then used for numerical analysis associated with thermal transport through fluid-saturated porous sintered beds. Multiple realizations are being used for statistically averaging out the randomness exhibited by way of the samples under consideration. The efficient thermal conductivity and permeability data are compared with analytical models made for spherical particle beds. The dependence relating to effective thermal conductivity associated with sintered samples about the extent associated with sintering is quantified. The interfacial heat transfer coefficient is compared against a correlation with the literature based upon experimental data obtained with spherical particle beds. A modified correlation is proposed to correspond with the end result obtained.pharmaceutics filter

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