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fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
TRISCHKA, JOHN W. (2011)
Publisher: Co-Action Publishing
Journal: Tellus A
Languages: English
Types: Article
Subjects:
The shedding of atmospheric vortex streets from mountain peaks has been simulated in the wakes of several shapes of circular cones and one combination of two such cones placed in the uniform, unstratified flow of a wind tunnel. Conditions for vortex shedding are more favorable the steeper the slopes of the peaks. From the laboratory measurements and with the assumption of Reynolds number independence, predictions are made of the periodicities of vortex shedding from six volcanic peaks whose periodicities of vortex shedding have been determined by others from satellite photographs of wake clouds. The predicted periods agree with the measured periods in three cases and are significantly smaller in three cases. For the latter cases it is concluded that stratification has so altered the atmospheric flow that either the Strouhal number has been lowered or the barrier effect of the topographic obstacle has been considerably enhanced. It is also concluded that stratification sufficient to reduce turbulence is necessary for the existence of an extended atmospheric vortex street.DOI: 10.1111/j.2153-3490.1980.tb00963.x
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • Batham, J. P. 1973. Pressure distributions on circular cylinders at critical Reynolds numbers. J. Fluid Mech. 57,209-228.
    • Bloor, M. S . and Gerrard, J. H. 1966. Measurements on turbulent vortices in a cylinder wake. Proc. Roy. Soc. 294,3 19-342.
    • Chopra, K. P. 1972. Velocity field in vortices leeward of islands. J. Atmos. Sc. 29,396-399.
    • Chopra, K. P. and Hubert, L. F. 1964. K t i r m b vortex streets in earth's atmosphere. Nature 203, 134 1-1343.
    • Chopra, K. P. and Hubert, L. F. 1965. K k m b vortex streets in wakes of islands. AZAA Jour. 3, 1941-1943.
    • Friday, E. W. Jr and Wilkins, E. M. 1967. Experimental investigations of atmospheric wake vortex trails. Essa Satellite Laboratory Research Grant E-4 1-67 (G). University of Oklahoma Research Institute, Dept. of Meteorology, Norman, Oklahoma.
    • Gaster, M. 1971. Vortex shedding from circular cylinders at low Reynolds numbers. J. Fluid Mech. 46, 749-756.
    • Greenly, G. D. Jr 1969. An investigation of the formation and maintenance of Karman vortex patterns. M.Sc. Thesis, University of Oklahoma, Norman, Oklahoma. 48 pp.
    • Lyons, W. A. and Fujita, T. 1968. Mesoscale motions in oceanic stratus as revealed by satellite data. Mon. Wea.Rev.96,304-3 14.
    • Moussa, Z. M., Trischka, J. W. and Eskinazi, S. 1977. The near field in the mixing of a round jet with a cross-stream. J. Fluid Mech. 80,49-80.
    • Mujumdar, A. S. and Douglas, W. J. M. 1970. Comment on “Vortex shedding from circular cylinders in sheared flow”. AIAA Jour. 8,990-991.
    • Roshko, A. 1954. On the drag and shedding frequency of two-dimensional bluff bodies. NACA Technical Note NO.3 169, 1-29.
    • Snyder, W. H. 1972. Similarity criteria for the application of fluid models to the study of air pollution meteorology. Boundary-Layer Meterol. 3, 113-1 34.
    • Sykes, R. I. 1978. Stratification effects in boundary layer flow over hills. Proc. Roy. Soc. Lond. A . 361, 225-243.
    • Szecheny, E. 1975. Supercritical Reynolds number simulator for two-dimensional flow over circular cylinders.J. Fluid Mech. 70,529-542.
    • Tennekes, H. and Lumley, J. L. 1972. A first course in turbulence. Cambridge, Mass.: The MIT Press, 98.
    • Thomson, R. E., Gower, J. F. R. and Bowker, N. W. 1977. Vortex streets in the wake of the Aleutian Islands. Mon. Wea.Rev. 105, 873-884.
    • Tsuchiya, K. 1969. The clouds with the shape of Karman vortex streets in the wake of Cheju Island, Korea. J. Meteor. SOCJ.apan 47,457-464.
    • Zimmerman, L. I. 1969. Atmospheric wake phenomena near the Canary Islands. J. Appl. Meteorology 8 , 896-907.
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