Two-Phase Flow in Pipes: Numerical Improvements and Qualitative Analysis for a Refining Process
| Autor: | Argimiro Resende Secchi, Evaristo C. Biscaia, Rodrigo G. D. Teixeira |
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| Přispěvatelé: | Petrobras [Rio de Janeiro], Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia (COPPE-UFRJ), Universidade Federal do Rio de Janeiro (UFRJ) |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Engineering
Operations research 020209 energy General Chemical Engineering Energy Engineering and Power Technology 02 engineering and technology Classification of discontinuities lcsh:Chemical technology lcsh:HD9502-9502.5 020401 chemical engineering 0202 electrical engineering electronic engineering information engineering Applied mathematics lcsh:TP1-1185 0204 chemical engineering Pressure gradient [PHYS]Physics [physics] business.industry Oil refinery Refinery lcsh:Energy industries. Energy policy. Fuel trade Algebraic equation Fuel Technology Regularization (physics) Two-phase flow business Differential algebraic equation |
| Zdroj: | Oil & Gas Science and Technology, Vol 70, Iss 3, Pp 497-510 (2015) Oil & Gas Science and Technology-Revue d'IFP Energies nouvelles Oil & Gas Science and Technology-Revue d'IFP Energies nouvelles, Institut Français du Pétrole, 2015, 70 (3), pp.497-510. ⟨10.2516/ogst/2013191⟩ |
| ISSN: | 1953-8189 1294-4475 |
| DOI: | 10.2516/ogst/2013191⟩ |
| Popis: | International audience; Two-phase flow in pipes occurs frequently in refineries, oil and gas production facilities and petrochemical units. The accurate design of such processing plants requires that numerical algorithms be combined with suitable models for predicting expected pressure drops. In performing such calculations, pressure gradients may be obtained from empirical correlations such as Beggs and Brill, and they must be integrated over the total length of the pipe segment, simultaneously with the enthalpy-gradient equation when the temperature profile is unknown. This paper proposes that the set of differential and algebraic equations involved should be solved as a Differential Algebraic Equations (DAE) System, which poses a more CPU-efficient alternative to the “marching algorithm” employed by most related work. Demonstrating the use of specific regularization functions in preventing convergence failure in calculations due to discontinuities inherent to such empirical correlations is also a key feature of this study. The developed numerical techniques are then employed to examine the sensitivity to heat-transfer parameters of the results obtained for a typical refinery two-phase flow design problem. |
| Databáze: | OpenAIRE |
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