SavedAdd your journal

Journals / Isı Bilimi ve Tekniği Dergisi / 2009 / Cilt: 29 - Sayı: 2

Lazer enerjisinin sesüstü kavitelerdeki akış üzerine etkileri

The effects of laser energy deposition on supersonic cavity flow

Selin ARADAĞ
Doyle KNIGHT
Hong YAN
Pages
67–73
Publication Date
2022-10-18
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The results indicate that energy deposition reduces the pressure fluctuations changing the flow structure within the cavity.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:The study examines the capability for reduction of the resonant pressure fluctuations in supersonic flow over an open rectangular cavity using repetitively pulsed energy deposition, computationally.
📊
Key Findings & Data:The simulations are performed for the cases both with and without energy deposition for the unsteady flow over a three-dimensional cavity at a free stream Mach number of 1.5.
💡
Conclusion & Impact:The results indicate that energy deposition reduces the pressure fluctuations changing the flow structure within the cavity.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

The study examines the capability for reduction of the resonant pressure fluctuations in supersonic flow over an open rectangular cavity using repetitively pulsed energy deposition, computationally. The simulations are performed for the cases both with and without energy deposition for the unsteady flow over a three-dimensional cavity at a free stream Mach number of 1.5. The Reynolds-averaged compressible time dependent Navier Stokes equations in three dimensions are solved using the flow solver GASPex. The k-ω turbulence model is used. A Gaussian temperature profile is utilized to model the energy pulse assuming the density within the spot is initially uniform. The results indicate that energy deposition reduces the pressure fluctuations changing the flow structure within the cavity.

Özet

Bu çalışma, açık dikdörtgensel kaviteler üzerindeki basınç dalgalanmalarının lazer enerjisi ile azaltılmasının mümkün olup olmadığını araştıran sayısal bir çalışmadır. Simülasyonlar, enerji gönderilen ve gönderilmeyen iki ayrı durumda üç boyutlu bir kavite üzerindeki zamana bağlı değişen Mach sayısı 1.5 olan sesüstü akış için gerçekleştirilmiştir. Sıkıştırılabilir zamana bağlı Reynolds-ortalamalı Navier Stokes denklemleri üç boyutta GASPex adlı kod kullanarak çözümlenmiştir. Türbülans modeli olarak k-ω kullanılmıştır. Lazer enerjisini modellemek için Gauss sıcaklık profili kullanılmış, enerjinin gönderildiği noktadaki yoğunluğun başlangıçta uniform olduğu kabul edilmiştir. Çalışmada elde edilen sonuçlara göre, lazer enerjisi kavite içindeki akış yapısını değiştirerek, basınç dalgalanmalarını azaltmaktadır.

🔖

Cite This Article

ARADAĞ, S., KNIGHT, D., YAN, H. (2022). Lazer enerjisinin sesüstü kavitelerdeki akış üzerine etkileri. Isı Bilimi ve Tekniği Dergisi, Cilt: 29 - Sayı: 2, 67–73. https://ajindex.com/articles/542608

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (16)

  1. Aerosoft Inc. General Aerodynamic Simulation Program User Manual, 1996.
  2. Aradag, S., Yan, H. Knight, D., “Energy Deposition in Supersonic Cavity Flow", AIAA Paper No. 2004-0514, January 2004.
  3. Bauer, R. C. and Dix, R. E., Engineering Model of Unsteady Flow in a Cavity, Calspan Corp./AEDC Operations, Arnold Engineering Development Center, TR-91-17,
  4. Tullahoma, TN, Dec. 1991.
  5. Charwat, A. F., Roos, J. N., Dewey, Jr. F. C. and Hitz, J. A., An Investigation of Separated Flows-Part I: The Pressure Field, Journal of Aero. Sciences, Vol. 28, 1961, pp. 457-470.
  6. Hankey, W. L. and Shang, J. S., The Numerical Solution to Pressure Oscillations in an Open Cavity, AIAA 79- 0136. Heller, H. H., and Bliss, D. B., Physical Mechanism of Flow Induced Pressure Fluctuations in Cavities and Concepts for their Suppression, AIAA Paper 75-491, March 1975.
  7. Kaufman, L. G., II, Maciulaitis, A. and Clark, R. L., Mach 0.6 to 3.0 Flows Over Rectangular Cavities, Air Force Wright Aeronautical Labs., AFWAL-TR-82-3112, May 1983.
  8. Knight, D., Kuchinskiy, V., Kuranov, A., Sheikin, E., Survey of Aerodynamic Flow Control at High Speed by Energy Deposition, AIAA 2003-0525, 2003.
  9. Lamp, A. M. and Chokani, N., Computation of Cavity Flows with Suppression Using Jet Blowing, Journal of Aircraft, Vol. 34, No. 4, July-August 1997.
  10. Lazar, E., Elliott, G. Amd Glumac, N., “Control of the Shear Layer Above a Supersonic Cavity Using Energy Deposition”, AIAA Journal, vol. 46., No. 12, 2987- 2997, 2008.
  11. Leu, Y. L, Dolling, D. S., Passive Control of Pressure Oscillations in Cavity Flow with Store Release, Confederation of European Aerospace Societies Forum on Wind Tunnels and Wind Tunnel Test Techniques, 1997.
  12. Perng, S. W., Passive Control of Pressure Oscillations in Hypersonic Cavity Flow, Ph.D. Dissertation, Dept. of Aerospace Engineering and Engineering Mechanics, University of Texas at Austin, Austin, Texas, USA., 1996.
  13. Rizzetta, D. P., Numerical Simulation of Supersonic Flow Over a Three-Dimensional Cavity, AIAA Journal, Vol. 26, No. 7, July 1988.
  14. Rockwell, D. and Naudascher, E., Review-Selfsustaining Oscillations of Flow Past Cavities, ASME, Journal of Fluid Engr., Vol. 100, 1978, pp. 152-165.
  15. Rossiter, J. E., Wind-Tunnel Experiments on the Flow Over Rectangular Cavities at Subsonic and Transonic speeds, A.R.C.R. & M., No. 3438, 1964.
  16. Shih, S. H., Hamed, A. and Yeuan J. J., Unsteady Supersonic Cavity Flow Simulations Using Coupled k-ε and Navier-Stokes Equations, AIAA Journal, Vol. 32, No. 10, December 1994.