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Surface Measurements - Flow Field Correlations Resulting in Applicable Cavity…

Award Information

Department of Defense
Air Force
Award ID:
Program Year/Program:
2007 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Combustion Research and Flow Technology, Inc.
6210 Kellers Church Road Pipersville, PA -
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 2
Fiscal Year: 2007
Title: Surface Measurements - Flow Field Correlations Resulting in Applicable Cavity Flow Field Control
Agency / Branch: DOD / USAF
Contract: FA8650-07-C-3710
Award Amount: $749,995.00


A surface pressure measurement based closed loop adaptive flow control strategy for the minimization of dynamic loads caused by high subsonic/supersonic flow over a cavity is proposed. In the Phase I part of this program we have focused on the examining the feasibility of this approach and establishing some of the basic techniques to be used in the control algorithm. The validity of using a limited number of wall pressure measurements as an indicator of the entire cavity flow field dynamics is established, its temporal analog is shown to be equivalent to an ARMA system identification model and its use in a predictive manner to estimate future states of the system is demonstrated. This, along with a Disturbance Rejection based controller and a plant model in the form of a validated CFD solver is used to create a numerical test bed. This presents a low risk approach to the Phase II where we will focus the issues of controller design, actuator characterization, design and refinement, and, demonstration of flow control on a cavity flow field at a suitable scale.

Principal Investigator:

Srinivasan Arunajatesan
Senior Research Scientist

Business Contact:

Neeraj Sinha
Vice President & Technica
Small Business Information at Submission:

6210 Keller's Church Road Pipersville, PA 18947

EIN/Tax ID: 232759059
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No