A 2-D numerical method for tracking a moving water table

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dc.contributor.author Clearwater, Emily en
dc.contributor.author OSullivan, MJ en
dc.contributor.author Archer, Rosalind en
dc.coverage.spatial Sacromento, California, USA en
dc.date.accessioned 2017-07-10T03:48:20Z en
dc.date.issued 2016-10-25 en
dc.identifier.citation 40th GRC Annual Meeting & GEA Geoexpo+, Sacromento, California, USA, 24 Oct 2016 - 26 Oct 2016. Transactions- Geothermal Resources Council. Geothermal Resources Council. 887-891. 25 Oct 2016 en
dc.identifier.isbn 978-1-5108-3707-2 en
dc.identifier.issn 0193-5933 en
dc.identifier.uri http://hdl.handle.net/2292/34130 en
dc.description.abstract A new numerical method has been incorporated into the existing TOUGH2 framework to allow for more accurate tracking of a moving water table in a non-isothermal system. The method is based on the calculation of the mass flow into or out of the top surface of the model (the water table surface). The correct position of the water table is one where fluid is no longer moving into or out of the top surface of the water table block. This paper describes a numerical scheme for accurately tracking the movement of the water table. It is implemented through python scripting without interfering with the TOUGH2 code. To demonstrate the method a 2-D non-isothermal model representing a shallow reservoir with constant fluid production is considered. For comparison, an equivalent air/water EOS model was run using standard TOUGH2. The results demonstrate the improvement the new method holds over current approaches of either using a fixed water table or using an air/water model and moving the water table block by block. Further development and extension of the method will be explored in order to extend water table tracking to boiling flow and to include the vadose zone. en
dc.description.uri https://geothermal.org/Annual_Meeting/PDFs/2016_FINAL_Program_Low_Res.pdf en
dc.publisher Geothermal Resources Council en
dc.relation.ispartof 40th GRC Annual Meeting & GEA Geoexpo+ en
dc.relation.ispartofseries Transactions- Geothermal Resources Council en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.title A 2-D numerical method for tracking a moving water table en
dc.type Conference Item en
pubs.begin-page 887 en
pubs.author-url https://www.geothermal-library.org/index.php?mode=pubs&action=view&record=1032408 en
pubs.end-page 891 en
pubs.finish-date 2016-10-26 en
pubs.publication-status Published en
pubs.start-date 2016-10-24 en
dc.rights.accessrights http://purl.org/eprint/accessRights/RestrictedAccess en
pubs.subtype Proceedings en
pubs.elements-id 610623 en
pubs.org-id Engineering en
pubs.org-id Engineering Admin en
pubs.org-id Engineering Science en
pubs.record-created-at-source-date 2017-01-27 en


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