The diffusion coefficient of '%r in natural krypton has been measured as a function of density. T'hc results deviate significantly from the values predicted by the Enskog theory. At low densities. the behaviour can be described by regarding the gas as a monomer-dimer mixture.
The density dependence of the self-diffusion coefficient of chlorotrifluoromethane near the critical temperature
โ Scribed by K.R. Harris
- Publisher
- Elsevier Science
- Year
- 1978
- Tongue
- English
- Weight
- 708 KB
- Volume
- 93
- Category
- Article
- ISSN
- 0378-4371
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โฆ Synopsis
In this paper are reported NMR spin-echo measurements of the self-diffusion coefficient of chlorotrifluoromethane at 30% 50 ยฐ and 75ยฐC over the density range 3 to 15 mol dm 3. No evidence was found for the type of critical region anomaly recently reported by Duffield and Harris for carbon dioxide. The high density data are correlated with molecular dynamics computer simulated data for hard spheres. The translational-rotational coupling factor for Chandler's rough hard sphere model is found to be 0.90-+ 0.02. For the viscosity the coupling factor is 0.77 -+ 0.02. These values are found to be consistent with limits set by classical hydrodynamic theory.
28.9 MW 104.459
๐ SIMILAR VOLUMES
By inems of 2 moiecul~ dynemic d method the s=lfdXfusion coelficient of gseous systems hzve been c;i!cul~ted at densities below the critic& it has been four,d thei the artrzctive pxt of tie ilXCiZlOICcUls~ potcr+I !lZS 2 EZ2rk&!e ii!fluence on the density dependence of diffution. h:oreowr, sho;t-tim