1. Project 5, Fluid Flow Separation Control
Progress Presentation: Week 4
Michael Cline
Junior
Mechanical Engineering
Brandon Mullen
Sophomore
Aerospace Engineering
Project Mentor: Kirti Ghia
Sponsored By The National Science Foundation Grant ID No.: DUE …
… in cooperation with University of Cincinnati College of Engineering and Applied Science, Cincinnati, Ohio.

2. Project Introduction What is flow separation? How is flow controlled?
What are the benefits of eliminating separation?
ADD CONTROL

3. Project Goals Project Objectives
A working knowledge of separation flow control strategies.
Generate unique data to expand knowledge of flow separation.
Provide insight to engineering problems with the application of these control strategies and obtain enhanced performance.
Project Objectives
Review for unique applications/aspects to investigate.
Successfully simulate and prevent airflow separation.
Produce summary for Dr. Ghia’s future researchers.
Publish technical paper in AIAA or Turbomachinery journal.

4. Plasma Actuators Importance No net mass injection. Easily adjusted.
Thomas, F. O., Kozlov, A., & Corke, T. C. (2008). “Plasma Actuators for Cylinder Flow Control and Noise Reduction.” AIAA Journal,
Importance
No net mass injection.
Easily adjusted.

5. Automobile Flow Control*

6. Momentum Cylinders
Velocity of cylinder injects momentum into separated flow
Causes fluid to reattach and prevents negative pressure drag
Works best for “bluff” bodies
*Effect of momentum injection on the aerodynamics of several bluff bodies By: V.J. Modi, B.Ying, T.Yokomizo

7. Delta-Fins Cause turbulent vortex flows downstream.
Turbulent flow is more likely to reattach.
Reattachment decreases separated bubble
Decreased pressure drag ensues.

8. Decreased Separated Bubble by use of Delta-Fins
Research on Aerodynamic Drag Reduction by Vortex Generators
By: Masaru Koike, Tsunehisa Hagayoshi, Naoki Hamamoto

9. Progress Project Deliverables Reviewed and compared strategies.
Finalizing implementation solutions.
Ready to begin simulation setup.
Deliverables
Kept up with weekly deliverables.
Will begin frame of final deliverables shortly.
Lack of data and fully-organized review/comparison has prevented starting.

10. Wk 1 Wk 2 Wk 3 Wk 4 Wk 5 Wk 6 Wk 7 Wk 8 Wk 9 Wk 10 Wk 11 Wk 12
Initial Lit. Review
Additional Lit. Review for Unique Data Confirmation.
Strategy Comparison
Flow Sim. Design
Flow Sims with and without Control Strategies.
Flow Simulation Analysis
Instructional Seminars and Final Deliverable Planning
Deliverable Finalization
WE ARE HERE -