Time-Variant Aerodynamics for Translational Motion of Large-Turning Airfoils.
Abstract
A cascade of five airfoil sections modelling the hub section of an advanced design turbine featuring a high inlet Mach number and 112 degrees of turning was evaluated at 4 steady-state conditions of varying exit Mach number and expansion ratio. The resulting steady-state airfoil surface pressures were compared to a state-of-the-art analytical prediction. A time-variant investigation was conducted at the 4 operating conditions of the steady-state experiment. Data from high response pressure transducers imbedded along the surfaces of the center airfoil was acquired by individually oscillating each airfoil of the cascade normal to its chord. From this data, the time-varying surface pressures as functions of interblade phase angle were quantified and compared with a current unsteady analysis. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1982
- Accession Number
- ADA118884
Entities
People
- M. D. Rothrock
- M. J. Gritton
- R. L. Jay
Organizations
- General Motors