A parallel universal mesh deformation scheme

Lei Ji, Robert Wilson, Kidambi Sreenivas, Daniel Hyams

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Scopus citations

Abstract

Many approaches for moving and deforming mesh have been developed, but the approach adopted often depends on both the meshing scheme and the proposed application. Approaches based on a spring analogy with linear torsional springs or solution of partial differential equations have been used, but are generally very expensive to solve at each time step and are not trivial to parallelize. Here, a universal approach to grid motion known as the algebraic interpolation method (AIM) is followed to manage deforming surfaces. This method is universal and applicable to any grid type. Also, it is perfectly suitable to a parallel platform and can be implemented efficiently. The original scheme has some difficulty handling two-node bending mesh deformation involved in various fluid-structure interaction problems and other cases in which mesh deformation is driven solely by the surface motion. Several modifications have been made for these applications. It is determined that the grid quality can be improved significantly by adding a smoothing algorithm. Extra connectivities can also help improve the grid quality. The current scheme is applied to several well known synthetic jet applications from a NASA Langley Workshop for validation. Results are presented for the mesh deformation of NACA0012 airfoil and Suboff body. Free surface evolution of S175 container ship is also included along with its two-node bending mesh deformation.

Original languageEnglish
Title of host publication28th AIAA Applied Aerodynamics Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Print)9781617389269
DOIs
StatePublished - 2010
Externally publishedYes

Publication series

Name28th AIAA Applied Aerodynamics Conference
Volume1

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