Flow Control Laboratory (FCL) - Dr. David Greenblatt
Research in the Flow Control Laboratory involves the use of localized actuators to bring about global changes to flow fields of interest. Applications of this research are to industrial aerodynamics and hydrodynamics in general, including wind turbines, internal flows, industrial fans and compressors. The research aims to improve the efficiency of fluid machinery by means of active or passive flow control. Additional research of a fundamental nature includes flow transition and relaminarization, as well as vortex breakdown.
Experimental facilities:
* The primary experimental facility is a 1m?0.61m low speed wind tunnel with wind speeds of up to 50 m/s and a test section extendable up to 6m. The tunnel incorporates transparent test sections and is optimized for optical measurements, such as particle Image velocimetry (PIV) and Laser Doppler Anemometry (LDA). Test sections can easily be changed and modified and this provides for a low maintenance high throughput facility. Major projects will study dynamic stall control on wind turbine blades and flow control on linear cascades of fan blades.
* A pipe flow facility is being used to study the generation of subcritical turbulence in developed and developing pipe flows and also the conditions under which the flow relaminarizes.
* A fan test facility is currently being constructed that will be used for studying stall on industrial fan blades.
Measurement Equipment:
The primary measurement techniques that will be employed in the laboratory are a high-power Stereoscopic Particle Image Velocimeter (PIV), a multi-channel hot wire anemometer and a high speed pressure scanner. The PIV incorporates 2?200mJ Nd:YAG lasers and 2?4 megapixel cameras and will be used for three-dimensional flowfield measurements above and in the wake of turbine blades. The anemometer can be extended to a ten channel system.
No comments:
Post a Comment