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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Bidan, Guillaume Vezier, Clementine Dimitris, E. Nikitopoulos |
| Copyright Year | 2011 |
| Abstract | The effects of jet flow-rate modulation were investigated in the case of a 35° inclined jet in cross-flow over a flat plate using Mie scattering visualizations, time-resolved flow rate records and large eddy simulations (LES). An unforced jet study was conducted over a wide range of blowing ratios to provide a baseline for comparison to the pulsed results. The two distinct and well known steady jet regimes (attached jet with high film cooling performance for BR<0.4 and detached jet with poor film cooling performance for BR>1.0) were related to the dynamics of characteristic vortical structures, significant in the transition from one regime to the other. Similarity of the inclined jet results with a past vertical jet study are also put in perspective when comparing wall adiabatic effectiveness results. 3D Proper Orthogonal Decomposition (3D-POD) was performed on LES results of an unforced case at BR = 0.15 to provide an analysis of dominant modes in the velocity and temperature fields. Error calculations on the reconstructed fields provided an estimation of the number of modes necessary to obtain satisfactory reconstruction while revealing some of the shortcomings associated with POD. |
| Sponsorship | International Gas Turbine Institute |
| Starting Page | 1517 |
| Ending Page | 1528 |
| Page Count | 12 |
| File Format | |
| ISBN | 9780791854679 |
| DOI | 10.1115/GT2011-45400 |
| Volume Number | Volume 7: Turbomachinery, Parts A, B, and C |
| Conference Proceedings | ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition |
| Language | English |
| Publisher Date | 2011-06-06 |
| Publisher Place | Vancouver, British Columbia, Canada |
| Access Restriction | Subscribed |
| Subject Keyword | Radiation scattering Visualization Temperature Flat plates Scattering (physics) Flow (dynamics) Errors Cross-flow Large eddy simulation Dynamics (mechanics) Electromagnetic scattering Jets Film cooling Principal component analysis |
| Content Type | Text |
| Resource Type | Article |
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