Velocity and Pressure Distributions in Tornado-Like Vortices

  • David R. Smith
Conference paper

Abstract

Tornadoes have been reported on some occurrences to contain smaller secondary vortices. These subsidiaries vortices, also called the multiple vortex phenomenon (MVP), revolve around and rotate in the same direction as the parent vortex (Church et al., 1979). Their importance are of more than just academic interest, since damage surveys indicate that some of the most violent and destructive tornado damage has been associated with multiple vortices (Fujita, 1976; Agee et al., 1976).

Keywords

Tangential Velocity Core Radius Contour Interval Secondary Vortex Vortex Chamber 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Agee, E.M., J.T. Snow and P.R. Clare (1976) Multiple Vortex Features in the Tornado Cyclone and the Occurrence of Tornado Families. Mon. Wea. Rev., 104, 552–563.Google Scholar
  2. Baker, G.L. and C.R. Church (1979) Measurements of Core Radii and Peak Velocities in Modeled Atmospheric Vortices. J. Atmos. Sci., 36, 2413–2424.Google Scholar
  3. Church, C.R., J.T. Snow, G.L. Baker and E.M. Agee (1979) Characteristics of Tornado-like Vortices as a Function of Swirl Ratio: A Laboratory Investigation. J. Atmos. Sci., 36, 1755–1776.Google Scholar
  4. Davies-Jones, R.P. (1973) The Dependence of Core Radius on Swirl Ratio in a Tornado Simulator. J. Atmos. Sci., 30, 1427–1430.Google Scholar
  5. Diamond, C. (1982) Laboratory Simulation of Tornado-like Vortices under the Effects of Translation. M.S. Thesis, Univ. of Oklahoma, Norman, OK, 75 pp.Google Scholar
  6. Fujita, T.T. (1976) History of Suction Vortices. Proc. of the Symposium on Tornadoes, Texas Tech Univ., Lubbock, TX, 28–88.Google Scholar
  7. Harlow, F.H. and L.R. Stein (1974) Structural Analysis of Tornado-like Vortices. J. Atmos. Sci., 31, 2081–2098.Google Scholar
  8. Leslie, F.W. (1977) Surface Roughness Effects on Suction Vortex Formation: A Laboratory Simulation. J. Atmos. Sci., 34, 1022–1027.Google Scholar
  9. Pauley, R.L., C.R. Church and J.T. Snow (1982) Measurements of Maximum Surface Pressure Deficits in Modeled Atmospheric Vortices. J. Atmos. Sci., 39, 369–377.Google Scholar
  10. Rotunno, R. (1977) Numerical Simulation of a Laboratory Vortex J. Atmos. Sci., 34, 1942–1956.CrossRefGoogle Scholar
  11. Rotunno, R. (1979) A Study in Tornado-like Vortex Dynamics. J. Atmos. Sci., 36, 140–155.CrossRefGoogle Scholar
  12. Rotunno, R. (1983) An Investigation of a Three-Dimensional Asymmetric Vortex. (Accepted for publication to J. Atmos. Sci.).Google Scholar
  13. Rotunno, R. and D.K. Lilly (1981) A Numerical Model Pertaining to the Multiple Vortex Phenomenon. Final Report to U.S. Nuclear Regulatory Commission, NTIS#NUREG/CR-1840, 51 pp.Google Scholar
  14. Smith, D.R. (1982) Comparative Studies of Tornado-like Vortices. Proceedings of the International Conf. on Computational Methods and Experimental Measurements, Washington, DC, 141–150.Google Scholar
  15. Snow, J.T., C.R. Church and B.J. Barnhart (1980) An Investigation of the Surface Pressure Fields Beneath Simulated Tornado Cyclones. J. Atmos. Sci., 37, 1013–1026.Google Scholar
  16. Ward, N.B. (1972) The Explanation of Certain Features of Tornado Dynamics using a Laboratory Model. J. Atmos. Sci., 49, 1194–1204.CrossRefGoogle Scholar
  17. Wilson, T.L. (1981) Vortex Boundary Layer Dynamics. M.S. Thesis, Univ. of California, Davis, 139 pp.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1984

Authors and Affiliations

  • David R. Smith
    • 1
  1. 1.Purudue UniversityUK

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