eprintid: 50186 rev_number: 14 eprint_status: archive userid: 1903 dir: disk0/00/05/01/86 datestamp: 2019-04-30 11:34:56 lastmod: 2019-04-30 11:48:36 status_changed: 2019-04-30 11:48:36 type: article metadata_visibility: show creators_name: Le Clainche Martinez, Soledad creators_name: Varas Merida, Fernando creators_name: Vega De Prada, Jose Manuel title: Accelerating oil reservoir simulations using POD on the fly rights: by-nc-nd ispublished: pub subjects: matematicas full_text_status: restricted keywords: fluids; finite volume methods; time integration, implicit; transport abstract: A reduced order model (ROM) is presented for the long-term calculation of subsurface oil/water flows. As in several previous ROMs in the field, the Newton iterations in the full model (FM) equations, which are implicit in time, are projected onto a set of modes obtained by applying proper orthogonal decomposition (POD) to a set of snapshots computed by the FM itself. The novelty of the present ROM is that the POD modes are (i) first calculated from snapshots computed by the FM in a short initial stage, and then (ii) updated on the fly along the simulation itself, using new sets of snapshots computed by the FM in even shorter additional runs. Thus, the POD modes adapt themselves to the local dynamics along the simulation, instead of being completely calculated at the outset, which requires a computationally expensive preprocess. This strategy is robust and computationally efficient, which is tested in 10- and 30-year simulations for a realistic reservoir model taken from the SAIGUP project. date_type: published date: 2017 publication: International Journal for Numerical Methods in Engineering volume: 110 number: 1 pagerange: 79-100 id_number: 10.1002/nme.5356 institution: Espacio department: Matematica_aplicada_2014 refereed: TRUE issn: 0029-5981 official_url: https://onlinelibrary.wiley.com/doi/abs/10.1002/nme.5356 comprojects_type: MINECO comprojects_type: MINECO comprojects_code: TRA2013-45808-R comprojects_code: MTM2013-47800-C2-2-P citation: Le Clainche Martinez, Soledad and Varas Merida, Fernando and Vega De Prada, Jose Manuel (2017). Accelerating oil reservoir simulations using POD on the fly. "International Journal for Numerical Methods in Engineering", v. 110 (n. 1); pp. 79-100. ISSN 0029-5981. https://doi.org/10.1002/nme.5356 . document_url: https://oa.upm.es/50186/1/INVEMEM_2017_271039.pdf