Accession Number : ADP005515

Title :   A Quasi Three Dimensional Method for the Calculation of Transonic Flows in Turbomachines,

Corporate Author : STUTTGART UNIV (GERMANY F R) INST FUER LUFTFAHRT-ANTRIEBE

Personal Author(s) : Haller,Joerg

Report Date : MAR 1987

Pagination or Media Count : 12

Abstract : A procedure based on the iterative coupling of flow calculations on S1 blade-to-blade stream surfaces and a flow calculation on an S2 hub to tip stream surface is described. The solutions on S1 surfaces of revolution are obtained by a time marching method in finite volume form, whereas a finite difference method is used for the S2 calculation. The finite difference method uses a stream function formulation based on a passage averaging technique in order to account for non-axisymmetric flows, especially with shocks inside a blade row. Sample calculations of a single stage and a two stage compressor are presented and compared with measurements.

Descriptors :   *TRANSONIC FLOW, *TURBOMACHINERY, SHOCK, ROTARY COMPRESSORS, GAS TURBINES, COMPRESSOR BLADES, THREE DIMENSIONAL FLOW, ITERATIONS, ENTHALPY, UNSTEADY FLOW, VISCOUS FLOW, WEST GERMANY

Subject Categories : Fluid Mechanics
      Hydraulic and Pneumatic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE