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논문 상세정보

두 개의 평행한 평면 제트의 실험적 연구

Experimental Investigation of Two Parallel Plane Jets

Abstract

The characteristics of flow on two parallel plane jets was experimentally investigated. The two nozzles each with an aspect ratio of 20 were separated by 6 nozzle widths. Reynolds number based on nozzle width was set to 5,000 by nozzle exit velocity. The particle image velocimetry and pressure transducer were employed to measure turbulent velocity components and mean static pressure, respectively. In case of unventilated parallel plane jets, it was shown that a recirculation zone with sub-atmospheric static pressure was bounded by the inner shear layers of the individual jets and the nozzles plated. There was no recirculation zone in the ventilated parallel plane jets. It was found that the spanwise turbulent intensities of unventilated jets were higher than those of ventilated jets because of the interaction of jets, and the streamwise turbulent intensities of ventilated jets were higher than those of unventilated jets because of the effect of entrainment.

참고문헌 (10)

  1. Miller, D.R. and Comings, E.W., 1960 'Force-Momentum Fields in a Dual-Jet Flow, J. Fluid Mech,' Vol. 7, pp. 237-256 
  2. Tanaka, E., 1970, 'The Interference of Two-Dimensional Parallel Jets(1st Report, Experiment on Dual Jet),' Bull JSME, Vol. 13, pp. 272-280 
  3. Tanaka, E., 1974, 'The Interference of Two-Dimension Parallel Jets (2nd Report, Experiments on the Combined Flow of Dual Jet),' Bull JSME, 17, No. 109, pp. 920-927 
  4. Elbanna, H. Gahin, S. and Rashed, M.I.I., 1983, 'Investigation of Two Plane Parallel Jets,' AIAA, Vol. 21, No.7, pp, 986-991 
  5. Lin, Y.F. and Sheu, M. J., 1990, 'Investigation of Two Plane Parallel Unventilated Jets,' Experiments in Fluid, Vol. 10, pp. 17-22 
  6. Nasr, A. and Lai, J.C.S., 1997, 'Comparison of Flow Characteristics in the Near Field of Two Parallel Plane Jets and an Offset Plane Jet,' Physics of Fluid, 9(10), pp. 2919-2931 
  7. Nasr, A. and Lai, J.C.S., 1997, 'Two Parallel Plane Jets Mean Flow and Effects of Acoustic Excitaton, Experiments in Fluids,' Vol. 22, pp. 251-260 
  8. Kim, D. K. and Yoon, S. H., 2003, 'The Flow Characteristics of Parallel Jets Using Particle Image Technique(I),' Transactions of the KSME (B), Vol. 27, No.3, pp. 302-310 
  9. Morel, T., 1975, 'Comprehesive Design of Axisymmetic Wind Tunnel Contraction,' J. Fluid Engineering, Vol. 97, pp. 225-233 
  10. Militzer, J., 1977, 'Dual Plane Parallel Turbulent Jets,' Ph. D. Thesis, University of Waterloo 

이 논문을 인용한 문헌 (1)

  1. Jin, Hak-Su ; Kim, Jeong-Soo ; Choi, Jong-Wook ; Kim, Sung-Cho 2007. "Experiments on the Flow Characteristics of Circular Multiple Jets Arrayed Circumferentially" 大韓機械學會論文集. Transactions of the Korean Society of Mechanical Engineers. B. B, 31(3): 306~312 

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