✦ LIBER ✦

An inviscid/viscous coupling approach for vortex flow field calculations

✍ Scribed by K. D. Lee; S. A. Brandt

Book ID: 102843169
Publisher: John Wiley and Sons
Year: 1992
Tongue: English
Weight: 819 KB
Volume: 14
Category: Article
ISSN: 0271-2091
DOI: 10.1002/fld.1650141206

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✦ Synopsis

A new computational approach is developed for the analysis of vortex-dominated flow fields around highly swept wings at high angles of attack. In this approach an inviscid Euler technology is coupled with viscous models, similar to inviscid/boundary layer coupling. The viscous nature of the vortex core is represented by an algebraic model derived from the Navier-Stokes equations. The approach also accounts for the effects of the viscous shear layer near a wing surface through a modified surface boundary condition. The inviscid/viscous coupling consistently provides improved predictions of leading edge separation, vortex bursting and secondary vortex formation at relatively low computational cost. Results for several cases are compared with wind tunnel tests and other Euler and Navier-Stokes solutions

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