Numerical laser energy deposition on supersonic cavity flow and sensor placement strategies to control the flow
The Scientific World Journal, vol.2013, 2013 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 2013
- Publication Date: 2013
- Doi Number: 10.1155/2013/141342
- Journal Name: The Scientific World Journal
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Open Archive Collection: AVESIS Open Access Collection
- TED University Affiliated: No
Abstract
In this study, the impact of laser energy deposition on pressure oscillations and relative sound pressure levels (SPL) in an open supersonic cavity flow is investigated. Laser energy with a magnitude of 100 mJ is deposited on the flow just above the cavity leading edge and up to 7 dB of reduction is obtained in the SPL values along the cavity back wall. Additionally, proper orthogonal decomposition (POD) method is applied to the x-velocity data obtained as a result of computational fluid dynamics simulations of the flow with laser energy deposition. Laser is numerically modeled using a spherically symmetric temperature distribution. By using the POD results, the effects of laser energy on the flow mechanism are presented. A one-dimensional POD methodology is applied to the surface pressure data to obtain critical locations for the placement of sensors for real time flow control applications. © 2013 Ibrahim Yilmaz and Selin Aradag.