Particle-gas system

Chang, E. J., K. Kailasanath, and S. K. Aggarwal. 1995. Compressible flows of gas-particle systems in an axisymmetric ramjet combustor. AIAA Paper No. 95-2561. 

Matsen, J. M., Rossetti, S. J. and Halow, J. S. (1986). Fluidized Beds and Gas Particle Systems. In Encyclopedia of Chemical Processing and Design. Ed. J. J. McKetta. New York Marcel Dekker. 

For gas-particle systems the molecular conductivities of the different phases are frequently calculated employing two semi-empirical relations deduced from the model of Zehner and Schliinder [145]. The original model of Zehner and... 

For gas-particle systems where pf < pp, only the drag force is important, since all other forces are proportional to the ratio pflpp-... 

We assume further that the concentrations of vapor and impurity molecules are small in comparison with the concentration of a neutral buffer gas and use the diffusion equation to describe the mass transfer to the particles. The deposition problem is considered within the quasi-stationary approximation. For simplicity we assume the gas-particle system to be isothermal. The conditions on the particle surface and at the infinity distance from the particle can be written as... 

Millikan s empirical equation (2.64) was derived from experimental data for gas-particle systems with nearly perfect accommodation (a = 0.8 - 1.0). Therefore, (2.64) is not likely to be correct as to its dependence on gas-particle accommodation. This is seen easily from the fact that the constant, B, calculated from (2.65,66) takes on zero and negative values B O, when Maxwell s accommodation... 

The difficulty with all the analyses cited lies in the fact that there are at present no a priori methods for determining for a given gas-particle system the phenomenological coefficients C.., Cj, or the various accommodation coefficients which arise for the thermal-force problem. Of course, C, and can be obtained from independent experimental measurements of isothermal drag force, heat transfer, and thermal transpiration, respectively [2.103], However,... 

Investigation of gas-surface interactions is essential. Now, the accommodation coefficients appear in the theory as adjustable parameters for a given gas-particle system. 

THERMODYNAMIC PROPERTIES OF A SHELL MOLECULE-GAS PARTICLES SYSTEM... 

Clift, R. (1985) Particle-particle interactions in gas-particle systems. PowtecJi. 85. No. 91. Institution of Chemical Engineers, Rugby, UK. 

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