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Prospects for Eulerian CFD analysis of helicopter vortex flowsThe applicability of current finite-volume CFD algorithms based on the Euler equations to the vortex flow over a helicopter in forward flight is investigated analytically. The general characteristics of the flow are reviewed; existing Euler, Navier-Stokes, perturbation, high-order, and adaptive methods are briefly characterized; and a novel Eulerian/Lagrangian approach with entropy and vorticity corrections is presented in detail. Numerical results for simple convection of a finite-core Lamb vortex moving downstream with its axis perpendicular to the flow are presented in graphs, and the possibility of extending the method to three-dimensional, viscous, and shock flows is discussed.
Document ID
19880030086
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Drela, Mark
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Murman, Earll M.
(MIT Cambridge, MA, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1987
Subject Category
Aerodynamics
Meeting Information
Meeting: National Specialists'' Meeting on Aerodynamics and Aeroacoustics
Location: Arlington, TX
Country: United States
Start Date: February 25, 1987
End Date: February 27, 1987
Sponsors: AHS
Accession Number
88A17313
Funding Number(s)
CONTRACT_GRANT: NAG2-421
Distribution Limits
Public
Copyright
Other

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