Optimal multi-block mesh generation for CFD

Zaib Ali, P. Caleb Dhanasekaran, Paul G. Tucker, Rob Watson, Shahrokh Shahpar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

An assessment of various automatic block topology generation techniques for creating structured meshes has been performed. The objective is to find out optimal blocking methods for generating meshes suitable for flow simulations. The comparison has been carried out using an adjoint based error analysis of the meshes generated by these block topologies. Different objective functions and numerical schemes have been used for this assessment. It is found that, in general, the medial axis based approaches provide optimal blocking and yields better accuracy in computing the functional of interest. This is because the medial axis based methods produce meshes which have better flow alignment specially in case of internal flows. The adjoint based error indicator has also been used to implicitly adapt the block boundaries in the regions of large error.

Original languageEnglish
Title of host publicationAIAA SciTech Forum - 55th AIAA Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc. (AIAA)
ISBN (Electronic)9781624104473
DOIs
Publication statusPublished - 01 Jan 2017
Externally publishedYes
Event55th AIAA Aerospace Sciences Meeting - Grapevine, United States
Duration: 09 Jan 201713 Jan 2017

Conference

Conference55th AIAA Aerospace Sciences Meeting
CountryUnited States
CityGrapevine
Period09/01/201713/01/2017

ASJC Scopus subject areas

  • Aerospace Engineering

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