Accession Number : ADP007684

Title :   A Computational Study of Tip Leakage Flow and Losses in a Linear Turbine Cascade,

Corporate Author : VIRGINIA POLYTECHNIC INST AND STATE UNIV BLACKSBURG DEPT OF MECHANICAL ENGINE ERING

Personal Author(s) : Moore, John ; Moore, Joan G.

Report Date : FEB 1992

Pagination or Media Count : 12

Abstract : A computational study of 3-D flow in the VPI and SU tip leakage turbine cascade is used to show the level of modelling attainable now. Results for the overall flow development are compared with measurements of flow and losses at the exit of the tip leakage gap and downstream of the blade row. Mechanisms for the additional loss due to tip leakage are discussed. Consideration is given to areas where the modelling of fine scale flow structure may be improved. These include the flow in the tip clearance gap, flow in the tip leakage vortex, and flow separation at the trailing edge.

Descriptors :   *FLOW SEPARATION, *TURBINES, *THREE DIMENSIONAL FLOW, *CASCADES(FLUID DYNAMICS), BLADES, CLEARANCES, EDGES, EXITS, FINES, FLOW, LOSSES, MEASUREMENT, SCALE, SEPARATION, STRUCTURES, TRAILING EDGES, COMPUTATIONS.

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE