What is it about?

Up to 40 % drag reduction of a D-shaped body is achieved via closed-loop LPV control. We have reported for the first time a successful experimental regulation of the reduced drag under variable freestream velocity. The feedback signal is the pressure fluctuations measured using a microphone at the model base.

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Why is it important?

We believe that the proposed control strategy is well suited for a range of active flow control problems such as; separation control, noise reduction, mixing enhancement, ..etc. This is due to the fact the most flow control problems are realized under variable freestream velocities.


This work took several years for experimental setup, experiments, writing, ..etc. I had the pleasure with a group of outstanding co-authors. The findings of this work and the initial feedback of my colleagues make all the time spent and difficulties faced worth it.

Tamir Shaqarin
Tafila Technical University

Read the Original

This page is a summary of: Drag reduction of a D-shaped bluff-body using linear parameter varying control, Physics of Fluids, July 2021, American Institute of Physics, DOI: 10.1063/5.0058801.
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