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Dimensionless analysis of fluid-to-particle heat transfer coefficients
Baptista, Paulo N.; Oliveira, Fernanda A.R.; Oliveira, Jorge C.; Sastry, Sudhir K.Average fluid-to-particle heat transfer coefficients were experimentally determined for spherical aluminium particles heated in car☐ymethylcellulose solutions. Two situations were considered: a still panicle immersed in a moving fluid, and a particle rotating in an otherwise stagnant fluid. Fluid flow rate, rotating particle velocity, particle diameter and fluid rheological properties were varied, covering a la...
Effect of product and process variables in the flow of spherical particles in a...
Baptista, Paulo N.; Oliveira, Fernanda A. R.; Caldas, Susana M.; Oliveira, Jorge C.; Sastry, Sudhir K.Residence time of particles and fluid-to-particle heat transfer coefficient, two of the major unknowns in the aseptic processing of particulate fluid foods, are intimately related with the linear and rotational velocities of the solid particles. These two velocities were measured by videotaping the flow of individual spherical particles in transparent straight tubes. The effect of fluid velocity and viscosity, ...
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