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| Titel: |
EDDY NUMBER DISTRIBUTION IN ISOTROPIC TURBULENCE AND ITS APPLICATION FOR ESTIMATING MASS TRANSFER COEFFICIENTS |
| Auteur: |
Zhang, Zhibing Thomas, Colin R. |
| Verschenen in: |
Chemical engineering communications |
| Paginering: | Jaargang 140 (1994) nr. 1 pagina's 207-217 |
| Jaar: |
1994-10-01 |
| Inhoud: |
The eddy number distribution for isotropic turbulent flows has been derived by manipulating well-established formulae for describing turbulence. The distribution has been used to derive an expression relating the fractional rate of surface renewal, and hence mass transfer coefficients across gas-liquid interfaces, to key process variables such as the local energy dissipation rate and the Kolmogorov scale. The expression has been compared with the previously published roll-cell and eddy-cell models, which were applied to correlating local mass transfer coefficients in a pipe and an open absorption channel. Excellent agreement has been found. The expression has also been applied to correlating the gas-side mass transfer coefficients for liquid evaporation in wetted wall pipe flows, and the mass transfer coefficient for solid dissolution adjacent to a solid-liquid interface in a stirred tank. The theoretical correlations have been validated by published experimental data. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 6 van 13 gevonden artikelen
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