%0 Journal Article %A Axtell, Natalie K. %A Park, Moongyu %A Cushman, John H. %D 2005 %I Begell House %N 1 %P 71-84 %R 10.1615/IntJMultCompEng.v3.i1.60 %T Micromorphic Fluid in an Elastic Porous Body: Blood Flow in Tissues with Microcirculation %U https://www.dl.begellhouse.com/journals/61fd1b191cf7e96f,69f10ca36a816eb7,73a2ac9d1b07a232.html %V 3 %X The circulation of blood in tissues is a multiscale, multiphase porous media problem with a unique characteristic that the fluid phase is a micromorphic continuum, i.e., the fluid phase contains deformable particles that affect its flow. Fluid continuum particles possess three translational degrees of freedom and nine additional degrees for microrotation, microshear, and microstretch. These latter nine degrees of freedom are required to model the behavior of the red blood cells in small capillaries. The tissue phase is assumed to be an elastic porous body. The micromorphic fluid and the porous solid are homogenized to obtain balance and conservation equations. The entropy inequality for the mixture is employed to obtain thermodynamically consistent constitutive equations that are subsequently linearized. The resultant system has 28 equations with a like number of unknowns. %8 2005-03-28