Mechanics/heattransfer relation for particulate materials
Abstract
This quarter has seen the conclusion of the shear cell study. It was shown that the apparent thermal conductivity of a sheared granular materials increases linearly with the shear rate. Interestingly enough, the apparent viscosity also varies linearly with the shear rate and it may be argued that both vary as the square root of the granular temperature just as kinetic theory predicts that the viscosity and thermal conductivity of a monatonic hard sphere gas varies as the square root of the thermodynamic temperature. The apparent Prandtl number of the shared material is a function only of the solid fraction, (nu). As a closing summary, this quarterly report is devoted to the discussion of the conductivity measurements.
 Publication:

Unknown
 Pub Date:
 January 1991
 Bibcode:
 1991mhtr.reptQ....C
 Keywords:

 Couette Flow;
 Density (Mass/Volume);
 Energy Dissipation;
 Granular Materials;
 Heat Transfer;
 Particulates;
 Thermal Conductivity;
 Collisions;
 Least Squares Method;
 Momentum Transfer;
 Particle Size Distribution;
 Prandtl Number;
 Temperature Dependence;
 Viscosity;
 Fluid Mechanics and Heat Transfer