Predictions and Measurements of 3D Viscous Flow in a Transonic Turbine NozzleGuide Vane Row
Abstract
In recent years improvements in algorithms and computing power have allowed the regular use of three dimensional viscous flow programs to analyse the flows in turbines. Before these programs can be used with confidence by the turbine designer, however, they must be validated by comparison with high quality experimental data taken at realistic conditions. A transonic turbine nozzle guide vane has been tested in an annular cascade with two different endwall geometries. The measurements were taken at engine-representative flow conditions and include surface static pressures and a down-stream area traverse of total pressure. The flow through these geometries has been modelled at the test conditions using a three-dimensional viscous flow program. The effects of different mesh densities and two turbulence models have been studied. Predictions of secondary flow and loss have been obtained and are compared with the experimental measurements.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1991
- Accession Number
- ADA241597
Entities
People
- G. C. Horton
- K. S. Chana
- S. P. Harasgama
Organizations
- Royal Aircraft Establishment