Skip to Content
Find More Like This
Return to Search

System for amplifying flow-induced vibration energy using boundary layer and wake flow control

United States Patent

April 21, 2015
View the Complete Patent at the US Patent & Trademark Office
U.S. Department of Energy - Visit the Office of the Assistant General Counsel for Technology Transfer & Intellectual Property Website
A system includes a body disposed in a flow field and a flow disturbance device configured to induce tuned and controlled flow fluctuations in the flow field that are coupled into and amplified by a boundary layer of the body and the flow field. The flow disturbance device is located on, within, or separated from the body. The body may be a bluff body or an airfoil and may be cylindrical in shape. The flow field is a fluid or plasma having a sub-critical flow rate. The flow disturbance device may be stationary or vibrating. The flow fluctuations are tuned to a frequency within an instability frequency band of the boundary layer. The frequency band may be a frequency band that naturally amplifies the flow fluctuations and alters the body's downstream vortex shedding pattern such that vortex-induced vibration characteristics experienced by the body are increased.
Liu; Wayne P. (San Diego, CA)
The United States of America as represented by the Secretary of the Navy (Washington, DC)
13/ 926,580
June 25, 2013
FEDERALLY-SPONSORED RESEARCH AND DEVELOPMENT The System for Amplifying Flow-Induced Vibration Energy Using Boundary Layer and Wake Flow Control is assigned to the United States Government and is available for licensing for commercial purposes. Licensing and technical inquiries may be directed to the Office of Research and Technical Applications, Space and Naval Warfare Systems Center, San Diego, Code 72120, San Diego, Calif., 92152; voice (619) 553-2778; email Reference Navy Case Number 102560.