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Model experiment of hazardous forest fire whirl


The fluid dynamical scaling laws of forest fires are derived by dimensional analysis and a scale model is constructed to investigate a forest fire which seriously injured several fire fighters. The result of the small-scale experiment indicate that a fire whirl could be generated in such a fire.

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  1. Williams, F. A., “Scaling Mass Fires”,Fire Research Abstracts and Reviews, Vol. 11, No. 1 (1979), p. 1.

    Google Scholar 

  2. Kita-kyushu Fire Station Office, Report of the Fire of Mt. Nuki, 1977.

  3. Spalding, D. B., “Colloquium on Modeling Principles”, 9th (Int'l.) Symposium on Combustion, The Combustion Institute, 1963, p. 833.

  4. Emmons, W. H., “The Fire Whirl”, 11th (Int'l). Symposium on Combustion, The Combustion Institute, 1967, p. 475.

  5. Lee, B. T., “Laboratory Scaling of the Fluid Mechanical Aspects of Large Fires”,Combustion Science and Technology, Vol. 4, 1972, p. 233.

    Google Scholar 

  6. Lee, S. L., and Otto, F. W., “Gross Vortex Activities in a Simple Simulated Urban Fire”, 15th (Int'l.) Symposium on Combustion, The Combustion Institute, 1974, p. 157.

  7. Emori, R. I., and Schuling, D. J., Model Experiment, The Theory and Its Application, Grihodo, Tokyo, 1973, Chap. 2.

    Google Scholar 

  8. Johnstone, R. E., and Thring, M.W., Pilot Plants, and Scale-up Methods in Chemical Engineering, McGraw-Hill, 1957, p. 12.

  9. Counihan, J., “Adiabatic Atmospheric Boundary Layers. A Review and Analyses of Data from the Period 1880–1972”, Atmos. Environ., 9, 1975, p. 871.

    Article  Google Scholar 

  10. Byram, G. M., “Scaling Laws for Modeling Mass Fires”,Pyrodynamics, Vol. 4, 1966, p. 271.

    Google Scholar 

  11. Saito, K., and Emori, R. I., “Theoretical Prediction of the Applicable Range of Scaling Laws on Tank Fire”, Fifth Joint Meeting of U.S.-Japan Panel on Fire Research and Safety. UJNR, Washington, D.C., October 15–24, 1980.

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Additional information

Note: Mr. Richard I. Emori is with the Mechanical Engineering Department, Seikei University, 3-Kichijoji Kitamachi, Musashino, Tokyo, Japan. Mr. Kozo Saito is a Research Associate with the Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, New Jersey.

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Emori, R.I., Saito, K. Model experiment of hazardous forest fire whirl. Fire Technol 18, 319–327 (1982).

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  • Forest Fire
  • Scale Model
  • Froude Number
  • Fire Technology
  • Fire Fighter