A generalized cubic equation of state with application to pure CO2 injection in aquifers
| Autor: | Bawfeh Kingsley Kometa, Sarah E. Gasda, Tor Harald Sandve, Halvor Møll Nilsen, Ivar Aavatsmark |
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| Rok vydání: | 2015 |
| Předmět: |
Equation of state
Partial differential equation Independent equation Differential equation Mathematical analysis Characteristic equation 010103 numerical & computational mathematics 02 engineering and technology Summation equation 01 natural sciences Computer Science Applications Computational Mathematics 020401 chemical engineering Computational Theory and Mathematics 0204 chemical engineering 0101 mathematics Computers in Earth Sciences Cahn–Hilliard equation Cubic function Mathematics |
| Zdroj: | Computational Geosciences. 20:623-635 |
| ISSN: | 1573-1499 1420-0597 |
| DOI: | 10.1007/s10596-015-9537-0 |
| Popis: | A generalized cubic equation of state is given. The Peng-Robinson and the Soave-Redlich-Kwong equations are special cases of this equation. The generalized equation of state is precisely as simple and computationally efficient as these classical equations. Through comparison with the Span-Wagner equation for CO 2, we obtain an improved density accuracy in predefined temperature-pressure domains. The generalized equation is then verified through two relevant examples of CO 2 injection and migration. Comparisons are made with other standard cubic EOS in order to show the range of solutions obtained with less accurate EOS. |
| Databáze: | OpenAIRE |
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