TED-AJ03-414 NON-ISOTHERMAL ANALYSIS ON PARTICLE MIGRATION OF CONCENTRATED SUSPENSION IN POISEUILLE FLOW

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When a concentrated suspension is forced through the channels or tubes that are at a temperature different from that of the fluid, the particle distribution and suspension temperature change significantly. These changes, which are difficult to measure, are not uniform. Particle migration can either heat or cool the suspension depending on the differences in the specific heat capacities of the fluid and solid phases. A method is described for the analysis of particle concentration dependent heat transfer and flow. The particle suspension was treated as inelastic but with viscosity which is power-law type and dependent on both temperature and particle concentration. A continuum diffusive-flux model, together with flow equations, was employed for solving the non-Newtonian flow patterns and non-uniform particle concentration distribution of mono-modal suspensions in a poiseuille flow. The distribution of particle concentration, temperature and velocity profiles is predicted using finite difference method. The thermal effects on particles distribution with different thermal boundary conditions were investigated. The thermal effects on particles distribution with different thermal boundary conditions were investigated. The experimental evidence for particle migration across fluid streamline in a poiseuille flow of a non-Newtonian viscous concentrated suspension will be presented. Good agreement between experimental observations and numerical predictions indicated that the procedures are useful in capturing particle migration in a poiseuille flow. The implication to powder injection molding will be discussed
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TED-AJ03-414 NON-ISOTHERMAL ANALYSIS ON PARTICLE MIGRATION OF CONCENTRATED SUSPENSION IN POISEUILLE FLOW

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