Abstract: On the basis of "A Boundary Perturbation Solution for the Hydrodynamic Stability of Blood Flow-in a Cone-Type Blood Processor", this paper analyses the phenomenon of the stratified blood compositions being mixed again. This phenomenon occurs in the process of trial-producing with the blood processor. This paper puts forward a reasonable shape of the flooding port and analyses the various physical parameters affecting the blood separation.These theoretical analyses are verified by the results of the laboratory experiments which were made by Shanghai Medical Instruments Institute.

Key words: unit cell model, finite element method, MMCs, creep behavior, breakage of fiber, statistic model, fiber parameters and distribution