Unsteady Loads on Compressor and Turbine Blade Induced by Passage of a Density Wake

Abstract

The object of the research funded under this grant is to study the unsteady aerodynamic forces and moments induced on cascade blades by a convected density gradient that is more or less normal to the flow path. Previous investigators have considered the effect of a variety of convected disturbances on cascade, compressor, and turbine performance. However, we believe this is the first investigation to focus on the production of unsteady loads associated with this process. The size and frequency content of these loads, when combined with other loads as fan, compressor and turbine blades have the potential to reduce the blade's high cycle fatigue life.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Mar 16, 1997
Accession Number
ADA343829

Entities

People

  • B. Ramer
  • C. Tam
  • E. Covert
  • S. Wijesinghe

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • C4I

DTIC Thesaurus Topics

  • Air Force
  • Boundary Layer
  • Compressors
  • Computational Fluid Dynamics
  • Convection
  • Differential Equations
  • Equations
  • Flow Fields
  • Fluid Dynamics
  • Gas Turbines
  • Pressure Distribution
  • Static Pressure
  • Steady State
  • Stratified Fluids
  • Turbine Blades
  • Turbines
  • Viscous Flow

Readers

  • Aerodynamics.
  • Fluid Dynamics.
  • Structural Health Monitoring of Composite Structures.