Viscous flow over backward facing steps - An experimental investigation
Abstract
The experimental design and results with an oil flow loop for testing numerical models for laminar flow over a backward facing step are reported. The height and width of the 1 m test channel were tailored to ensure the presence of laminar flow before the step. A laser Doppler velocimeter was operated in the fringe mode with a beam expander to monitor the flow. Insertion of a Pockels cell permitted measurements of negative velocities in the recirculation bubble. The flow velocity was steady to within 1 percent, with data sampling proceeding at a 100/sec rate. Streamlines, shear stress distributions, velocity profiles, and maximum velocity evolution patterns are furnished from three experiments.
- Publication:
-
Analysis of Laminar Flow over a Backward Facing Step
- Pub Date:
- 1984
- Bibcode:
- 1984alfb.proc...32K
- Keywords:
-
- Backward Facing Steps;
- Computational Fluid Dynamics;
- Flow Measurement;
- Laminar Flow;
- Viscous Flow;
- Flow Velocity;
- Laser Doppler Velocimeters;
- Oils;
- Recirculative Fluid Flow;
- Shear Stress;
- Stress Distribution;
- Fluid Mechanics and Heat Transfer