Transport coefficients tabulation

Using these modified dimensionless groups, it has been found possible to correlate a host of experimental data for a wide range of operations. The following correlations, tabulated in Table 5.7, have been found useful in predicting transport coefficients in the continuous phase of the stirred tanks. 

Tables 2,3, and 4 outline many of the physical and thermodynamic properties ofpara- and normal hydrogen in the sohd, hquid, and gaseous states, respectively. Extensive tabulations of all the thermodynamic and transport properties hsted in these tables from the triple point to 3000 K and at 0.01—100 MPa (1—14,500 psi) are available (5,39). Additional properties, including accommodation coefficients, thermal diffusivity, virial coefficients, index of refraction, Joule-Thorns on coefficients, Prandti numbers, vapor pressures, infrared absorption, and heat transfer and thermal transpiration parameters are also available (5,40). Thermodynamic properties for hydrogen at 300—20,000 K and 10 Pa to 10.4 MPa (lO " -103 atm) (41) and transport properties at 1,000—30,000 K and 0.1—3.0 MPa (1—30 atm) (42) have been compiled. Enthalpy—entropy tabulations for hydrogen over the range 3—100,000 K and 0.001—101.3 MPa (0.01—1000 atm) have been made (43). Many physical properties for the other isotopes of hydrogen (deuterium and tritium) have also been compiled (44).

From the magnitudes of the diffusion coefficients, it is evident that under the conditions cited the majority of the mass transport will occur by Knudsen diffusion. Equation 12.2.9 and the tabulated values of the porosity and tortuosity may be used to determine the effective diffusivity. 

The Mc term can be used to approximate initial sorption or desorption on the glass surface, and the kt1 2 term the longer-term diffusion transport into or out of the surface (3). As shown in Figure 2, the sorption term decreases and the diffusion term increases with temperature for the obsidian experiments. Tabulated values for Equation 1 are presented in Table 1 along with the regression coefficient, r2, for glass data. 

The first density correction for viscosity and for the translational part of the thermal conductivity is best predicted by the Rainwater-Friend model, for which values for the reduced second transport virial coefficients are given in Table 5.1. For computer codes the tabulated values can be approximated using the correlation... 

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