Computational techniques in multiphase flow and transport in porous media
- Texas A&M Univ., College Station, TX (United States)
- Brookhaven National Lab., Upton, NY (United States)
In general the objectives of computer simulation of multiphase, multicomponent flow and transport in porous media are to understand better the complex physical and chemical processes. An example of such complex phenomenon is the transport of radionuclides in multiphase groundwater flow in combination with sorption, desorption and radioactive decay. This knowledge can be used to successfully deal with urgent environmental problems. Using computer simulations efficient clean-up or remediation procedures can be developed. Flow and transport in porous media are described by a non-linear system of partial differential equations of convection-diffusion-reaction type. The formulation of the differential model is usually based on the mass conservation principle enhanced with constitutive relations such as the Darcy`s and Henry`s laws. Analytic solutions of such differential models are not possible. Accordingly numerical techniques provide the only feasible approach to solving these difficult problems. There has been an intense effort focused on building such models for these equations during the last few decades. This work has resulted in the development of a number of simulators in the petroleum industry for efficient reservoir modeling. These techniques are also being applied to environmental problems. A typical environmental application involves a pollutant leaking from a source either in the atmosphere or underground. The accurate prediction of the dominant direction and speed of movement as well as concentration levels are among the primary tasks in such settings. The aim of this paper is to discuss one approach for building a numerical two phase fluid flow and transport model for groundwater flow simulations. The authors discuss related discretization, solution methods and computer implementation. Numerical experiments involving a model groundwater application are provided.
- OSTI ID:
- 459173
- Report Number(s):
- CONF-950420-; TRN: 97:007081
- Resource Relation:
- Conference: International conference on mathematics and computations, reactor physics, and environmental analyses, Portland, OR (United States), 30 Apr - 4 May 1995; Other Information: PBD: 1995; Related Information: Is Part Of Proceedings of the international conference on mathematics and computations, reactor physics, and environmental analyses. Volume 1 and 2; PB: 1629 p.
- Country of Publication:
- United States
- Language:
- English
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