File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
  • Find via Find It@HKUL
Supplementary

Article: v-p material point method for weakly compressible problems

Titlev-p material point method for weakly compressible problems
Authors
Issue Date2018
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/compfluid
Citation
Computers & Fluids, 2018, v. 176, p. 170-181 How to Cite?
AbstractThe weakly compressible material point method (WCMPM) suffers from volumetric-locking and numerical oscillation in modeling fluid flow and fluid-structure interaction problems. In this paper, a v-pformulation of the material point method (vp-MPM) is proposed for weakly compressible problems based on a two-field variational principle. As only the velocity v and the pressure p are the independent variables, the v-p formulation has much less extra variables than those based on the Hu-Washizu multi-field variational principle which takes the velocity, strain and stress as independent variables. The pressure is assumed independently in the control volume of each gird node. Spurious pressure oscillation reduces but still occurs at the interface of discontinuity due to large pressure gradient difference across the interface. Therefore, a slope limiter is employed to suppress the oscillation and the general interpolation functions are used to eliminate the cell-crossing error. In order to extend the method to the fluid-structure interaction problems, the v-p formulation is incorporated into the improved coupled finite element material point method. Several numerical examples are presented to validate the vp-MPM.
Persistent Identifierhttp://hdl.handle.net/10722/265801
ISSN
2017 Impact Factor: 2.221
2015 SCImago Journal Rankings: 1.171

 

DC FieldValueLanguage
dc.contributor.authorChen, ZP-
dc.contributor.authorZhang, X-
dc.contributor.authorSze, KY-
dc.contributor.authorKan, L-
dc.contributor.authorQiu, XM-
dc.date.accessioned2018-12-04T09:16:02Z-
dc.date.available2018-12-04T09:16:02Z-
dc.date.issued2018-
dc.identifier.citationComputers & Fluids, 2018, v. 176, p. 170-181-
dc.identifier.issn0045-7930-
dc.identifier.urihttp://hdl.handle.net/10722/265801-
dc.description.abstractThe weakly compressible material point method (WCMPM) suffers from volumetric-locking and numerical oscillation in modeling fluid flow and fluid-structure interaction problems. In this paper, a v-pformulation of the material point method (vp-MPM) is proposed for weakly compressible problems based on a two-field variational principle. As only the velocity v and the pressure p are the independent variables, the v-p formulation has much less extra variables than those based on the Hu-Washizu multi-field variational principle which takes the velocity, strain and stress as independent variables. The pressure is assumed independently in the control volume of each gird node. Spurious pressure oscillation reduces but still occurs at the interface of discontinuity due to large pressure gradient difference across the interface. Therefore, a slope limiter is employed to suppress the oscillation and the general interpolation functions are used to eliminate the cell-crossing error. In order to extend the method to the fluid-structure interaction problems, the v-p formulation is incorporated into the improved coupled finite element material point method. Several numerical examples are presented to validate the vp-MPM.-
dc.languageeng-
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/compfluid-
dc.relation.ispartofComputers & Fluids-
dc.titlev-p material point method for weakly compressible problems-
dc.typeArticle-
dc.identifier.emailSze, KY: kysze@hku.hk-
dc.identifier.authoritySze, KY=rp00171-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.volume176-
dc.identifier.spage170-
dc.identifier.epage181-
dc.publisher.placeUnited Kingdom-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats