Accession Number : ADA299900
Title : Pseudo-Time Method for Optimal Shape Design Using the Euler Equations.
Descriptive Note : Contract rept.,
Corporate Author : INSTITUTE FOR COMPUTER APPLICATIONS IN SCIENCE AND ENGINEERING HAMPTON VA
Personal Author(s) : Iollo, Angelo ; Kuruvila, Geojoe ; Ta'asan, Shlomo
PDF Url : ADA299900
Report Date : AUG 1995
Pagination or Media Count : 24
Abstract : In this paper we exploit a novel idea for the optimization of flows governed by the Euler equations. The algorithm consists of marching on the design hypersurface while improving the distance to the state and costate hypersurfaces. We consider the problem of matching the pressure distribution to a desired one, subject to the Euler equations, both for subsonic and supersonic flows. The rate of convergence to the minimum for the cases considered is 3 to 4 times slower than that of the analysis problem. Results are given for Ringleb flow and a shockless recompression case.
Descriptors : *OPTIMIZATION, *SHAPE, *EULER EQUATIONS, COMPRESSION, ALGORITHMS, RATES, TIME, SHOCK, CONVERGENCE, FLOW, SUBSONIC FLOW, SUPERSONIC FLOW, RANGE(DISTANCE), MATCHING, PRESSURE DISTRIBUTION, PSEUDO RANDOM SEQUENCES.
Subject Categories : Numerical Mathematics
Distribution Statement : APPROVED FOR PUBLIC RELEASE