Adaptive grid scheme for vortex-induced boundary layers

Autor:	A. T. Conlisk, E. C. Adams, Frank T. Smith
Rok vydání:	1995
Předmět:	Asymptotic analysis Aerospace Engineering Boundary (topology) Eulerian path Geometry Mechanics Boundary layer symbols.namesake Flow separation Singularity symbols Crank–Nicolson method Numerical stability Mathematics
Zdroj:	AIAA Journal. 33:864-870
ISSN:	1533-385X 0001-1452
DOI:	10.2514/3.12507
Popis:	An adaptive-grid scheme is developed to resolve extremely large gradients associated with an unsteady vortex-induced boundary-layer flow. Previous investigations based on Eulerian descriptions have failed to resolve the terminal structure of the flowfield due to the emergence of a singularity at a finite time. The present approach is based on a moving-grid method applied to the streamwise direction of the boundary layer. Grid movement is coupled to the flowfield in an autonomous manner by an analytical weight function designed to improve the numerical stability and computational efficiency of the algorithm. The time and location of the singularity are successfully predicted in agreement with previous published Lagrangian calculations and asymptotic analysis.
Databáze:	OpenAIRE
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