Combining Thermodynamic and Fluid Flow Modelling for CO2 Flow Assurance
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- 作者：Svend Tollak Munkejord ; Christian Bernstone ; Sigmund Clausen ; Gelein de Koeijer ; Mona J. M?lnvik
- 关键词：CO2 transport ; CO2 mixtures ; CFD ; thermodynamics ; fluid dynamics
- 刊名：Energy Procedia
- 出版年：2013
- 出版时间：2013
- 年：2013
- 卷：37
- 期：Complete
- 页码：2904-2913
- 全文大小：584 K
文摘
The present paper concerns the importance of a combined modelling and experimental effort to develop physics- based combined thermodynamic and transient flow models for CO2-transport pipelines. Such models need to handle both multiple components and two-phase flow, which can occur both during normal operation and transient situations, such as first fill and depressurization. Moreover, these models can provide useful input to risk analyses and design of mitigation actions of undesirable incidents like pipeline rupture and well blow-outs. This paper discusses various physical phenomena, design issues and solutions by using the experience from actual cases encountered by Vattenfall, Gassco and Statoil. Among the key issues are the minimum temperature in the pipe wall during depressurization and the magnitude of pressure oscillations during transient operation.