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Record Details

Record 13 of 14
Numerical simulation of transonic flows in diffusers
Author and Affiliation:
Liou, M.-S.(NASA Ames Research Center, Moffett Field, CA, United States)
Coakley, T. J.(NASA Ames Research Center, Moffett Field, CA, United States)
Bergmann, M. Y.(NASA Ames Research Center, Moffett Field, CA, United States)
Abstract: Numerical simulations were made of two-dimensional transonic flows in diffusers, including flow separation induced by a shock or adverse pressure gradient. The mass-averaged, time-dependent, compressible Navier-Stokes equations, simplified by the thin-layer approximation, were solved using MacCormack's hybrid method. The eddy-viscosity formulation was described by the Wilcox-Rubesin's two-equation, k-omega model. Detailed comparison of the computed results with measurements showed good agreement in all cases, including one with massive separation induced by a strong shock. The computation correctly predicted the details of a distinct lambda shock pattern, closely duplicating the configuration observed experimentally in spark-schlieren photographs.
Publication Date: Jun 01, 1981
Document ID:
19810053693
(Acquired Nov 30, 1995)
Accession Number: 81A38097
Subject Category: AERODYNAMICS
Report/Patent Number: AIAA PAPER 81-1240
Document Type: Conference Paper
Publisher Information: United States
Meeting Information: Fluid and Plasma Dynamics Conference; 14th; June 23-25, 1981; Palo Alto, CA
Meeting Sponsor: American Institute of Aeronautics and Astronautics
Financial Sponsor: NASA; United States
Organization Source: NASA Ames Research Center; Moffett Field, CA, United States
Description: 8p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: DIFFUSERS; NUMERICAL FLOW VISUALIZATION; SEPARATED FLOW; TRANSONIC FLOW; TWO DIMENSIONAL FLOW; EDDY VISCOSITY; NAVIER-STOKES EQUATION; PRESSURE DISTRIBUTION; SCHLIEREN PHOTOGRAPHY; TURBULENT BOUNDARY LAYER; VELOCITY DISTRIBUTION
Imprint And Other Notes: American Institute of Aeronautics and Astronautics, Fluid and Plasma Dynamics Conference, 14th, Palo Alto, CA, June 23-25, 1981, 8 p. Research supported by the McDonnell Douglas Independent Research and Development Program and NASA.
Availability Source: Other Sources
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