Unstructured viscous layer insertion using linear-elastic smoothing

Steve L. Karman

doi:10.2514/1.23283

Unstructured viscous layer insertion using linear-elastic smoothing

Steve L. Karman

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

A robust scheme for generating unstructured viscous meshes, using elliptic partial differential smoothing, is presented. Linear-elasticity relationships, borrowed from the structural mechanics discipline, provide the governing partial differential equations for smoothly displacing the existing mesh, making room for new viscous layers. These viscous layers are allowed to advance up adjacent, nonviscous boundaries. A process of inserting layers on alternating boundary groupings enables the creation of high-quality hexahedral elements in juncture regions. Viscous layer height is allowed to vary, depending on the size of the local inviscid mesh. Three-dimensional results are included to illustrate the use of the method to produce high-quality viscous meshes.

Original language	English
Pages (from-to)	168-180
Number of pages	13
Journal	AIAA Journal
Volume	45
Issue number	1
DOIs	https://doi.org/10.2514/1.23283
State	Published - Jan 2007
Externally published	Yes

Funding

The University of Tennessee at Chattanooga through the Lupton Renaissance Fund sponsored this work. Calmar Research Corporation and NASA Ames Research Center provided the geometry for the tractor-trailer configuration. This support is greatly appreciated.

Funders	Funder number
University of Tennessee

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10.2514/1.23283

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Unstructured viscous layer insertion using linear-elastic smoothing

Abstract

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