The solutions were obtained numerically by adopting the Algebraic Slip Mixture (ASM) model of a CFD code for number of flow path dimensions and flow parameters. In this study, heat transfer of coefficient at the heated wall was experimentally determined and ice packing factor distribution in the flow channel was observed in detail, furthermore, a numerical simulation has been carried out to investigate both velocity distribution and solid fraction distribution in the flow channel. The ice slurry, which is a mixture of the fine ice particles and ethylene glycol aqueous binary solution, was utilized as a testing material. The characteristics of both flow and heat transfer were investigated experimentally and analytically for ice slurry flow in a return bend with rectangular cross section. Experimental results showed that the sample concentration had a considerable effect on the pressure drop, while for the heat transfer coefficient, it has small effect within the parameter range of the present study. Uncertainties of thermophysical properties of sample material (bentonite suspension) made the evaluation by non-dimensional numbers difficult. Both the overall heat transfer coefficient and pressure drop through the test tube were investigated under a variety of tube diameter, sample concentration, and flow rates. Pulsation was set from 0.7Hz to 2.7Hz whose range is similar to actual pulsation of human's blood flow. Sample fluid was driven from temperature controlled vessel with rotary pump by which a pulsate flow like blood flow was realized. Thin PVC tubes whose diameters are from 0.5 to 4mm were utilized as a model of blood vessel. Bentonite-water suspension was employed as a model of blood which is a thixotropic fluid. This paper deals with both pressure drop and heat transfer characteristics of thixotropic fluid flow through a thin tube experimentally to describe a precise model of blood flow in blood vessels in human body.
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