Unsteady flow in turbomachinery: An overview
Abstract
The importance of understanding and modeling the unsteady flow phenomena in turbomachinery is discussed. Historical events in the application and development of gas turbines for aircraft propulsion are traced. Technology advancements over the years are highlighted with focus on the compression system components. Trends in compressor research within the National Advisory Committee for Aeronautics (NACA)/National Aeronautics and Space Administration (NASA) are noted. The impact of technology advancements on the increased occurrences of unsteady flow related problems in advanced engine development programs is discussed. The impact of the new and more demanding requirements being imposed on the propulsion system to meet advanced aircraft mission needs are also noted. Brief discussions on the present day understanding and modeling capability of the unsteady flow phenomena are presented to include discussions on rotating stall, surge, flutter, forced response and noise generation.
- Publication:
-
In Von Karman Inst. for Fluid Dynamics Unsteady Flow in Turbomachines
- Pub Date:
- 1984
- Bibcode:
- 1984uft.....1....1.
- Keywords:
-
- Aircraft Design;
- Aircraft Engines;
- Engine Tests;
- Gas Turbines;
- Propulsion System Performance;
- Rotating Fluids;
- Turbomachinery;
- Unsteady Flow;
- Compressors;
- Engine Failure;
- Flutter;
- Loads (Forces);
- Maneuverability;
- Mission Planning;
- Research And Development;
- Technologies;
- Fluid Mechanics and Heat Transfer