Accession Number : ADP007700

Title :   Three Dimensional Solution of Internal Flows using a Cell Vertex Finite Volume Method,

Corporate Author : MIDDLE EAST TECHNICAL UNIV ANKARA (TURKEY)

Personal Author(s) : Oktay, Erdal ; Akmandor, I. S. ; Ucer, Ahmet S.

Report Date : FEB 1992

Pagination or Media Count : 14

Abstract : The numerical solutions of internal three dimensional Euler flows have been obtained, using a cell vertex finite volume method. The solver which has been developed, has been applied to a wide range of subsonic, transonic and supersonic test cases among which are the Ni-bump channel, the supersonic wedge cascade and the Squire and Winter 90 deg bend channel. A second order accurate, one step Lax-Wendroff scheme has been used to solve the unsteady equations, discretized in strong conservation form. Characteristic boundary conditions have been used along with appropriate artificial viscosity and smoothing models. The results illustrate the established flow symmetry in a subsonic Ni-bump channel, the shock - boundary interaction in transonic and supersonic Ni-channels and wedge cascade and finally, the secondary flow within a 90 deg bend channel. Despite the wide range in the Mach number and the diversity of flow geometries which have been tested, close agreement have been obtained with available analytical and numerical results associated with these test cases.

Descriptors :   *THREE DIMENSIONAL FLOW, *SUBSONIC FLOW, *SUPERSONIC FLOW, *TRANSONIC FLOW, AGREEMENTS, BOUNDARIES, CELLS, CHANNELS, CONSERVATION, EQUATIONS, FLOW, INTERACTIONS, INTERNAL, MACH NUMBER, MODELS, NUMBERS, SECONDARY, SECONDARY FLOW, SHOCK, SYMMETRY, TEST AND EVALUATION, VISCOSITY, VOLUME, WEDGES, WINTER.

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE