Hydraulic Resistance of Porous Metals

The use of porous mesh metals in heat exchanger apparatus and the creation of intermesh flow of the coolant through porous mesh metal are promising and efficient ways of intensifying heat exchange and decreasing hydraulic losses. The author of the article presents experimental data on viscous and inertial resistance coefficients of various porous metals manufactured of chrome-nickel steel, nickel, copper, and invar wire cloth using the diffusion vacuum welding method with one- or two-dimensional one-phase coolant filtration. Experimental data was obtained from studying the hydraulic resistance of packets of wire cloth and porous mesh metals under the coolant intermesh and orthogonal filtration to the mesh plane. It has been established that the hydraulic resistance of the porous mesh metal is affected by porosity, mesh type and mesh number, direction of the coolant filtration in relation to the mesh plane, and surface machining of the porous mesh.

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