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Viscous flow simulations in VTOL aerodynamicsThe critical issues in viscous flow simulations, such as boundary-layer separation, entrainment, turbulence modeling, and compressibility, are discussed with regard to the ground effects problem for vertical-takeoff-and-landing (VTOL) aircraft. A simulation of the two-dimensional incompressible lift jet in ground proximity is based on solution of the Reynolds-averaged Navier-Stokes equations and a turbulence-model equation which are written in stream function-vorticity form and are solved using Hoffman's augmented-central-difference algorithm. The resulting equations and their shortcomings are discussed when the technique is extended to two-dimensional compressible and three-dimensional incompressible flows.
Document ID
19780011848
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Bower, W. W.
(McDonnell-Douglas Research Labs. Saint Louis, MO, United States)
Date Acquired
August 9, 2013
Publication Date
February 1, 1978
Publication Information
Publication: NASA. Ames Res. Center Future Computer Requirements for Computational Aerodynamics
Subject Category
Aerodynamics
Accession Number
78N19791
Funding Number(s)
CONTRACT_GRANT: N00014-76-C-0494
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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