Numerical Study of Filtration Rates in Internal Filtration Enhanced Dialyzer(Fluids Engineering)

Abstract

Numerical calculation was done to estimate the flow rate in filtration of internal filtration enhanced dialyzer, in which the measurement of filtration rate is difficult. Using a finite volume method incorporated the variations in hollow fiber density with vessel taper, the effect of vessel taper was estimated. Permeability was used instead of the filtration coefficient, which depends on fluid viscosity, to determine the filtration quantity in internal filtration and to consider the change in blood viscosity with filtration. As the result of the present calculations, the filtration flow rate based on the filtration coefficient is found to be 10% lager than the one with the permeability measured by blood experiment.