Separation-Bubble Velocity Measurements Using an Oscillating-Hot-Wire System.
Final technical rept.,
ARIZONA STATE UNIV TEMPE DEPT OF MECHANICAL AND AEROSPACE ENGINEERING
Pagination or Media Count:
A system is developed to allow measurement of both the mean and disturbance flow velocities in separated regions. An oscillating-arm assembly provides a directional bias to the hot-wire probe, along with a linear-step assembly, which steps the probe through the boundary layer. This system is used to investigate the flow field associated with laminar separation bubbles. A series of velocity profiles are measured on an FX63-137 airfoil in the chord- Reynolds-number range 150,000 or R sub c or 300,000, at angles of attack of alpha 12 deg and alpha 14 deg. Data are presented on the size of the separation bubble and on the location of transition to turbulence.
- Fluid Mechanics