Coating regime

From Figure 5.13b it follows that the transition between the two coating regimes takes place at a reactive gas partial pressure of p(O2) 33mPa. At that partial pressure, the maximum rate is achieved for high substrate... 

Campanella, O.H. and Cerro, R.L., Viscous flow on the outside of a horizontal rotating cylinder The roll coating regime with a single fluid, Chem. Eng. ScL, 39,1443, 1984. Gavrielidou, M.A., Vaflous, N.A., Karapantsios, T.D., and Raphaelides, S.N., Heat transport to a starch slurry gelatinizing between the drums of a double drum dryer, J. Food Eng., 54,45, 2002. 

Explain the non-inertial, inertial, and coating regimes of granule granule growth. What happens to the maximum granule size as (a) the approach velocity increases, (b) the viscosity increases ... 

Inertial growth USt,, k. Sf) Some collisions cause coalescence while the others lead to rebound. There will be steady granule growth by coalescence. The extent and the rate of growth will be sensitive to process parameters which will determine the proportion of collisions that lead to coalescence. Varying process parameters and formulation properties can push the system into either the noninertial or the coating regimes. 

Coating regime > Sf) The kinetic energy in most or all collisions... 

Campanella, O.H. and Cerro, R.L., Viscous flow on the outside of a horizontal rotating cylinder the roll coating regime with a single fluid, Chem. Eng. Sci., 39,1443, 1984. 

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