Accession Number : ADP007691
Title : On the Computation of Unsteady Turbomachinery Flows Part 1 Euler Equations in Vibrating Cascades,
Corporate Author : PARIS-11 UNIV ORSAY (FRANCE)
Personal Author(s) : Gerolymos, George A.
Report Date : FEB 1992
Pagination or Media Count : 19
Abstract : The purpose of this paper is to present a methodology for unsteady flow analysis in vibrating transonic compressor cascades, using Euler equations. After a brief discussion of the problem, the numerical algorithm is presented, for the 3-D case, with particular emphasis on grid displacement procedures, slip-surface-fitting, boundary-conditions and their effect on computational results. Chorochronic flow periodicity and modal superposition are briefly discussed. Several results from realistic aircraft engine turbomachinery configurations are presented.
Descriptors : *TURBOMACHINERY, *UNSTEADY FLOW, AIRCRAFT, AIRCRAFT ENGINES, ALGORITHMS, BOUNDARIES, COMPRESSORS, CONFIGURATIONS, DISPLACEMENT, ENGINES, EQUATIONS, FITTINGS, FLOW, GRIDS, METHODOLOGY, PAPER, PERIODIC VARIATIONS, COMPUTATIONS, CASCADES(FLUID DYNAMICS), VIBRATION.
Subject Categories : Fluid Mechanics
Distribution Statement : APPROVED FOR PUBLIC RELEASE