Problems in forced unsteady fluid mechanics
Abstract
Forced unsteady fluid flows are examined from the point of view of positive implications of the time dependency. Particular problems examined in a forced unsteady mode are jets, wind tunnels, wings, ramps and diffusers, dump combustors and vortex structure. Two methods of forcing the flow are studied in detail: fluidic feedback and a cam-shaped rotor. The fluidic method produces an unsteady jet while the rotor acts as a time dependent vortex generator. Potential performance improvements with unsteady flow are evident in all of the flows examined.
- Publication:
-
Final Technical Report
- Pub Date:
- November 1981
- Bibcode:
- 1981wrsu.rept.....V
- Keywords:
-
- Flow Distribution;
- Time Dependence;
- Unsteady Flow;
- Vortices;
- Airfoils;
- Dump Combustors;
- Pressure Gradients;
- Vortex Generators;
- Fluid Mechanics and Heat Transfer