Calculation of sedimentation equilibrium using a modified flash algorithm
| Autor: | Marcelo Castier, Rogério O. Esposito, R.P. Peçanha, Frederico W. Tavares |
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| Rok vydání: | 2001 |
| Předmět: |
Equation of state
Particle number Chemistry Applied Mathematics General Chemical Engineering Monte Carlo method General Chemistry Hard spheres Industrial and Manufacturing Engineering Thermodynamic potential Gravitational field Sedimentation equilibrium Statistical physics Algorithm Thermodynamic process |
| Zdroj: | Chemical Engineering Science. 56:3771-3779 |
| ISSN: | 0009-2509 |
| DOI: | 10.1016/s0009-2509(01)00094-x |
| Popis: | We solved the sedimentation equilibrium problem using a generalized flash algorithm, in which we specify the temperature, global particle number density, total volume, and height of the system. The minimization of a thermodynamic potential that takes into account the effect of the gravitational field yields the equilibrium distribution profiles. We used a hard-sphere-mixture equation of state as the thermodynamic model. The results showed to be in good agreement with both experimental data for identical spheres and Monte Carlo simulations for binary systems. We also present a methodology suitable to calculate sedimentation equilibrium in more complex systems, containing more than one solid, each of them characterized by its own size distribution. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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