A polar model for synovial fluid with reference to human joints

An analysis of “Boosted Lubrication” between two approaching solids, one of which is porous, is presented with reference to normally loaded living human joints. Micropolar fluid has been considered to represent the synovial fluid in the fluid film region between the approaching surfaces and the flow of viscous fluid in the porous matrix due to filtration through the porous material. Such a situation analysed in two regions separately using the slip flow model introduced by Beavers and Joseph. The effect of concentration, shape and size of the micro molecules on the bearing characteristics is discussed. The results are in accordance with those of Dowson et al.⁸