A robust mesh optimisation method for multiphase porous media flows

Salinas, P., Pavlidis, D., Xie, Z. ORCID: https://orcid.org/0000-0002-5180-8427, Osman, H., Pain, C. C. and Jackson, M. D. 2018. A robust mesh optimisation method for multiphase porous media flows. Computational Geosciences 22 (5) , pp. 1389-1401. 10.1007/s10596-018-9759-z

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Abstract

Flows of multiple fluid phases are common in many subsurface reservoirs. Numerical simulation of these flows can be challenging and computationally expensive. Dynamic adaptive mesh optimisation and related approaches, such as adaptive grid refinement can increase solution accuracy at reduced computational cost. However, in models or parts of the model domain, where the local Courant number is large, the solution may propagate beyond the region in which the mesh is refined, resulting in reduced solution accuracy, which can never be recovered. A methodology is presented here to modify the mesh within the non-linear solver. The method allows efficient application of dynamic mesh adaptivity techniques even with high Courant numbers. These high Courant numbers may not be desired but a consequence of the heterogeneity of the domain. Therefore, the method presented can be considered as a more robust and accurate version of the standard dynamic mesh adaptivity techniques.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Publisher:	Springer Verlag (Germany)
ISSN:	1420-0597
Date of First Compliant Deposit:	8 October 2018
Date of Acceptance:	11 July 2018
Last Modified:	04 May 2023 21:56
URI:	https://orca.cardiff.ac.uk/id/eprint/114133

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