Volume preservation improvement for interface reconstruction hexahedral methods. (2017)

• Record Type: Journal Article
• Authors: Le Goff, Nicolas; Ledoux, Franck; Owen, Steven
• Is Part Of: Procedia engineering. Volume 203(2017)
• Page Start: 258
• Page End: 270
• Publication Date: 2017
• Subjects: hexahedral mesh -- interface reconstruction -- volume fraction -- volume preservation -- overlay grid; Engineering -- Congresses; Engineering -- Periodicals; Engineering; Conference proceedings; Periodicals; 620.005
• DOI: 10.1016/j.proeng.2017.09.805
• Languages: English
• ISSNs: 1877-7058

Abstract

Abstract: We propose a new post-processing procedure for automatically adjusting node locations of an all-hex mesh to better match the volume of a reference geometry. Hexahedral meshes generated via an overlay grid procedure, where a precise reference geometry representation is unknown or is impractical to use, do not provide for precise volumetric preservation. A discrete volume fraction representation of the reference geometry M I on an overlay grid is compared with a volume fraction representation of a 3D finite element mesh M O . This work proposes a procedure that uses the localized discrepancy between M I and M O to drive node relocation operations to more accurately match a reference geometry. We demonstrate this procedure on a wide range of hexahedral meshes generated with the Sculpt code and show improved volumetric preservation while still maintaining acceptable mesh quality.