NDLI: Prediction of high speed propeller flow fields using a three-dimensional euler analysis

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Prediction of high speed propeller flow fields using a three-dimensional euler analysis

Content Provider	NASA Technical Reports Server (NTRS)
Author	Bober, L. J. Kutler, P. Chaussee, D. S.
Copyright Year	1983
Description	To overcome the limitations of classical propeller theory, a computer program, NASPROP-E, was developed which solves for the flow field surrounding a multibladed propeller and axisymmetric nacelle combination using a finite difference method. The governing equations are the three dimensional unsteady Euler equations written in a cylindrical coordinate system. They are marched in time until a steady state solution is obtained. The Euler equations require no special treatment to model the blade work vorticity. The equations are solved using an implicit approximate factorization method. Numerical results are presented which have greatly increased the understanding of high speed propeller flow fields. Numerical results for swirl angle downstream of the propeller and propeller power coefficient are higher than experimental results. The radial variation of coefficient are higher than experimental results. The radial variation of swirl angle, however, is in reasonable agreement with the experimental results. The predicted variation of power coefficient with blade angle agrees very well with data.
File Size	2626198
Page Count	33
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19830011439
Archival Resource Key	ark:/13960/t6256fr47
Language	English
Publisher Date	1983-01-01
Access Restriction	Open
Subject Keyword	Aerodynamics Shock Waves Propellers Finite Difference Theory Flow Distribution Inviscid Flow Nacelles Wind Tunnel Models Swirling Mach Number Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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