0
TECHNICAL PAPERS

Large-Scale Disturbances and Their Mitigation Downstream of Shallow Cavities Covered by a Perforated Lid

[+] Author and Article Information
Stephen A. Jordan

Naval Undersea Warfare Center, Newport, RI 02841e-mail: jordansa@npt.nuwc.navy.mil

J. Fluids Eng 126(5), 851-860 (Dec 07, 2004) (10 pages) doi:10.1115/1.1792270 History: Received September 17, 2003; Revised May 30, 2004; Online December 07, 2004
Copyright © 2004 by ASME
Your Session has timed out. Please sign back in to continue.

References

Sarohia, V., 1975, “Experimental and Analytical Investigation of Oscillations in Flows Over Cavities,” Ph.D. thesis, California Institute of Technology.
Sarohia,  V., 1977, “Experimental Investigation of Oscillations in Flows Over Shallow Cavities,” AIAA J., 15, No. 7, pp. 984–991.
Gharib,  M., and Roshko,  A., 1987, “The Effect of Flow Oscillations on Cavity Drag,” J. Fluid Mech., 177, pp. 504–530.
Rockwell,  D., 1977, “Vortex Stretching due to Shear Layer Instability,” ASME J. Fluids Eng., 99, pp. 240–244.
Rockwell,  D., 1977, “Prediction of Oscillation Frequencies for Unstable Flow Past Cavities,” ASME J. Fluids Eng., 99, pp. 294–300.
Rockwell,  D., and Naudascher,  E., 1979, “Self-Sustained Oscillations of Impinging Free Shear Layers,” Annu. Rev. Fluid Mech., 11, pp. 67–94.
Rockwell,  D., and Knisely,  C., 1980, “Observations of the Three-Dimensional Nature of Unstable Flow Past a Cavity,” Phys. Fluids, 23, No. 3, pp. 425–431.
Knisely,  C., and Rockwell,  D., 1982, “Self-Sustained Low-Frequency Components in an Impinging Shear Layer,” J. Fluid Mech., 116, pp. 157–186.
Rowley,  C. W., Colonius,  T., and Basu,  A. J., 2002, “On Self-Sustained Oscillations in Two-Dimensional Compressible Flow Over Rectangular Cavities,” J. Fluid Mech., 455, pp. 315–346.
King,  J. L., Boyle,  P., and Ogle,  J. B., 1958, “Instability in Slotted Wall Tunnels,” J. Fluid Mech., 4, pp. 283–305.
Celik,  E., and Rockwell,  D., 2002, “Shear Layer Oscillation Along a Perforated Surface: A Self-Excited Large-Scale Instability,” Phys. Fluids, 14, No. 12, pp. 4444–4447.
Ozalp,  C., Pinarbasi,  A., and Rockwell,  D., 2003, “Self-Excited Oscillations of Turbulent Inflow Along a Perforated Plate,” J. Fluids Struct., 17, pp. 995–970.
Jordan,  S. A., and Ragab,  S., 1998, “A Large-Eddy Simulation of the Near Wake of a Circular Cylinder,” ASME J. Fluids Eng., 120, pp. 243–252.
Kravchenko,  A. G., and Moin,  P., 2000, “Numerical Studies of Flow Over a Circular Cylinder at ReD=3900,” Phys. Fluids, 12, No. 2, pp. 403–417.
Breuer,  M., 1998, “Numerical and Modeling Influences on Large-Eddy Simulations for the Flow Past a Circular Cylinder,” Int. J. Heat Fluid Flow, 19, pp. 512–521.
Jordan,  S. A., 1999, “A Large-Eddy Simulation Methodology in Generalized Curvilinear Coordinates,” J. Comput. Phys., 148, pp. 322–340.
Jordan,  S. A., 2003, “Resolving Turbulent Wakes,” ASME J. Fluids Eng., 125 pp. 823–834.
Smagorinsky,  J., 1963, “General Circulation Experiments With the Primitive Equations, I. The Basic Experiment,” Mon. Weather Rev., 91, pp. 99–164.
Germano,  M., Piomelli,  U., Moin,  P., and Cabot,  W. H., 1991, “A Dynamic Subgrid-Scale Eddy Viscosity Model,” Phys. Fluids, 3, pp. 1760–1765.
Jordan,  S. A., 2001, “Dynamic Subgrid-Scale Modeling for Large-Eddy Simulations in Complex Topologies,” ASME J. Fluids Eng., 123, pp. 1–10.
Schumann,  U., 1975, “Subgrid-Scale Model for Finite Difference Simulation of Turbulent Flows in Plane Channel and Annuli,” J. Comput. Phys., 18, pp. 376–404.
Rockwell, D., 2003, personal communication.
Mansy,  H., Yang,  P., and Williams,  D. R., 1990, “Quantitative Measurements of Three-Dimensional Structures in the Wake of a Circular Cylinder,” J. Fluid Mech., 270, pp. 277–296.
Pauley,  L. L., Moin,  P., and Reynolds,  W. C., 1990, “The Structure of Two-Dimensional Separation,” J. Fluid Mech., 220, pp. 397–411.
Liepmann, H. W., and Lufer, J., 1947, “Investigation of Free Turbulent Mixing,” NACA Technical Note No. 1257.

Figures

Grahic Jump Location
Comparison of time-averaged streamwise turbulence intensity 〈u〉/U for uniform and variable slot spacing. (a) Contours Max. 0.48, Min. 0.0, Incr. 0.024. (b) Contours Max. 0.28, Min. 0.0, Incr. 0.014.
Grahic Jump Location
Cross correlation coefficient between the Aft Cavity Pressure (indicated by the dot) and the resolved pressures (11 slots)
Grahic Jump Location
Staggered-hole 11, open 1 and slotted-cover cavity results indicating the dimensionless frequency and minimum streamwise length of an oscillatory flow for a specific cavity depth. (a) Dimensionless frequency. (b) Minimum streamwise length.
Grahic Jump Location
Time series and frequency spectrum of the large-scale oscillation for a three slotted-lid cavity. (a) Time series. (b) Frequency spectrum: bReδoo=468.
Grahic Jump Location
Time series and frequency spectrum of the large-scale oscillation for a five slotted-cover cavity. (a) Time series. (b) Frequency spectrum: bReδoo=530.
Grahic Jump Location
Comparison of the disturbance phase velocities over an open 2 and slotted-lid cavity; circle and square symbols signify the first and second modes of the open cavity, respectively
Grahic Jump Location
Scaled pressure spectrum (9 slots, b/d=4.5) and ratio of the spectral peaks inside and downstream of the slotted-covered cavity (3–11 slots). (a) Pressure spectrum. (b) Peak Sp ratio.
Grahic Jump Location
Comparison of the phase velocities of the large-scale instability over an open and slotted-cover cavity; circle and square symbols signify the first and second modes, respectively. (a) Pressure spectra. (b) Momentum thickness.
Grahic Jump Location
Comparison of phase-averaged streamwise turbulence intensity 〈u〉/U (ten averages at the fundamental frequency) for uniform and variable slot spacing (a) Contours Max. 0.44, Min. 0.0, Incr. 0.022. (b) Contours Max. 0.26, Min. 0.0, Incr. 0.013.
Grahic Jump Location
Example slot geometry (five slots) and the initial frequency spectra of the large-scale instability (a) Slot geometry. (b) Oscillation frequency.
Grahic Jump Location
Scaled frequency of the large-scale instability as a function of the streamwise cavity width for three geometric configurations (open, staggered and slotted)
Grahic Jump Location
Cross correlation coefficient (averaged over ten instability cycles); three slots (Red=4210, 6210) and five slots (Red=8680). (a) Three slots. (b) Five slots.

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In