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Record Details

Record 87 of 65623
Numerical method for gas dynamics combining characteristic and conservation concepts
Author and Affiliation:
Coakley, T. J.(NASA Ames Research Center, Moffett Field, CA, United States)
Abstract: An efficient implicit numerical method that solves the compressible Navier-Stokes equations in arbitrary curvilinear coordinates by the finite-volume technique is presented. An intrinsically dissipative difference scheme and a fully implicit treatment of boundary conditions, based on characteristic and conservation concepts, are used to improve stability and accuracy. Efficiency is achieved by using a diagonal form of the implicit algorithm and spatially varying time-steps. Comparisons of various schemes and methods are presented for one- and two-dimensional flows, including transonic separated flow past a thick circular-arc airfoil in a channel. The new method is equal to or better than a version of MacCormack's hybrid method in accuracy and it converges to a steady state up to an order of magnitude faster.
Publication Date: Jun 01, 1981
Document ID:
19810054609
(Acquired Nov 30, 1995)
Accession Number: 81A39013
Subject Category: FLUID MECHANICS AND HEAT TRANSFER
Report/Patent Number: AIAA PAPER 81-1257
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: 17p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: COMPUTATIONAL FLUID DYNAMICS; FINITE VOLUME METHOD; GAS DYNAMICS; NAVIER-STOKES EQUATION; SPHERICAL COORDINATES; TURBULENT FLOW; ALGORITHMS; COMPUTER TECHNIQUES; EFFICIENCY; ONE DIMENSIONAL FLOW; SEPARATED FLOW; TRANSONIC FLOW; TWO DIMENSIONAL FLOW; VISCOUS FLOW
Imprint And Other Notes: American Institute of Aeronautics and Astronautics, Fluid and Plasma Dynamics Conference, 14th, Palo Alto, CA, June 23-25, 1981, 17 p.
Availability Source: Other Sources
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