Optimal control of free-stream turbulence intensity by means of honeycombs
The characteristics of honeycombs of different shapes and sizes used for reducing free-stream turbulence in wind tunnels have been experimentally investigated. The optimum geometric dimensions of the honeycomb and its optimum location in the wind tunnel necessary to ensure a minimum level of turbulence in the working section have been determined.
KeywordsFluid Dynamics Wind Tunnel Optimum Location Geometric Dimension Minimum Level
Unable to display preview. Download preview PDF.
- 1.G. I. Derbunovich, A. S. Zemskaya, E. U. Repik, and Yu. P. Sosedko, “Use of screens for controlling the structure of flow turbulence in wind tunnels,”Uch. Zap. TsAGI,13, 11 (1982).Google Scholar
- 2.G. I. Derbunovich, A. S. Zemskaya, E. U. Repik, and Yu. P. Sosedko, “Optimum conditions of flow turbulence intensity control by means of screens,” in:Mechanics of Nonuniform and Turbulent Flows [in Russian], Nauka, Moscow (1989), p. 35.Google Scholar
- 3.G. I. Derbunovich, A. S. Zemskaya, E. U. Repik, and Yu. P. Sosedko, “Optimum conditions for the suppression of flow turbulence in the working section of a wind tunnel using screens mounted in the settling chamber,”Uch. Zap. TsAGI,20, 37 (1989).Google Scholar
- 4.G. I. Derbunovich, A. S. Zemskaya, E. U. Repik, and Yu. P. Sosedko, “Optimum conditions of turbulence reduction with screens,”Google Scholar
- 5.J. L. Lumley, “Passage of a turbulent stream through honeycomb of large length-to-diameter ratio,”Trans. ASME, J. Basic Eng.,86, 218 (1964).Google Scholar
- 6.J. L. Lumley and J. F. Mc Mahon, “Reducing water tunnel turbulence by means of a honeycomb,”Trans. ASME, Ser. D., J. Basic. Eng.,89, 764 (1967).Google Scholar
- 7.R. I. Loehrke and H. M. Nagib, “Control of free-stream turbulence by means of honeycombs: a balance between suppression and generation,”Trans. ASME, J. Fluid. Eng.,98, 342 (1976).Google Scholar
- 8.J. Sheiman and J. D. Brooks, “Comparison of experimental and theoretical turbulence reduction from screens, honeycombs and honeycomb-screen combinations,”J. Aircr.,18, 638 (1981).Google Scholar
- 9.G. I. Derbunovich, S. P. Lavrukhina, N. P. Mikhailova, E. U. Repik, and Yu. P. Sosedko, “The hydrodynamic drag of a honeycomb,”Uch. Zap. TsAGI,24, 107 (1993).Google Scholar
- 10.G. I. Derbunovich, A. S. Zemskaya, E. U. Repik, and Yu. P. Sosedko, “Effect of the degree of flow convergence on the turbulence level,”Izv. Akad. Nauk SSSR, Mekh. Zhidk. Gaza, No. 2, 146 (1987).Google Scholar
- 11.E. Levy, “Universal Strouhal law, evidence and applications,Kinam.,5, 255 (1983).Google Scholar
- 13.H. L. Langhaar, “Steady flow in the transition length of a straight tube,”Trans. ASME, J. Appl. Mech.,9, A-55 (1942).Google Scholar