Flow Field Analysis of Smoke in a Rectangular Tunnel
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초록
In order to simulate a smoke or poisonous gas emergency in a rectangular tunnel and to investigate a better way to exhaust the smoke, the characteristics of smoke flow have been analyzed using flow field data acquired by Particle Image Velocimetry(PIV). Olive oil has been used as tracer particles with the kinematic viscosity of air, 1.51×10-5 m2/s. The investigation has done in the range of Reynolds number of 1600 to 5333 due to the inlet velocities of 0.3 m/s to 1 m/s respectively. The average velocity vector and instantaneous kinematic energy fields with respect to the three different Reynolds numbers are comparatively discussed by the Flow Manager. In general, the smoke flow becomes more disorderly and turbulent with the increase of Reynolds number. Kinematic energy in the measured region increases with the increase of Reynolds number while decreasing at the leeward direction about the outlet region.
Abstract
In order to simulate a smoke or poisonous gas emergency in a rectangular tunnel and to investigate a better way to exhaust the smoke, the characteristics of smoke flow have been analyzed using flow field data acquired by Particle Image Velocimetry(PIV). Olive oil has been used as tracer particles with the kinematic viscosity of air, 1.51×10-5 m2/s. The investigation has done in the range of Reynolds number of 1600 to 5333 due to the inlet velocities of 0.3 m/s to 1 m/s respectively. The average velocity vector and instantaneous kinematic energy fields with respect to the three different Reynolds numbers are comparatively discussed by the Flow Manager. In general, the smoke flow becomes more disorderly and turbulent with the increase of Reynolds number. Kinematic energy in the measured region increases with the increase of Reynolds number while decreasing at the leeward direction about the outlet region.
참고문헌 (9)
- Brandeis, J., "A numerical study of tunnel fires", Combustion Sci. and Tech, 35, pp.133~155 (1983)
- "J. Fluid Mech", 1967, 643~655
- S. Aiba, "Heat transfer around tubes in in-line tube banks", Bull. JSME, 25, pp.919~926 (1982)
- Kim, W.J., "Origin and decay of longitudinal vortices developing in a curved rectangular duct", J. Fluids Eng., 116, pp.45~51 (1994)
- B. Bonhoff, "Experimental and numerical study of developed flow and heat transfer in coolant channels with 45 degree ribs", Int. J. Heat Fluid Flow, 20, pp.311~319 (1999)
- Dantec Dynamics, "Flow Manger software and introduction to PIV: 2D PIV Installation and User's Guide" (2000)
- Sang Kyoo Park, "PIV measurement of the flow field in rectangular tunnel", 한국마린엔지니어링학회지, 32(6), pp.886~892 (2008), 한국마린엔지니어링학회
- Hwang, C.C., "Experimental study of thermally generated reverse stratified layers in a fire tunnel", Combustion and Flame, 66, pp.171~180 (1986)
- V.P. Kolgan, "Establishment of circumfluence", Fluid Dynamics, MAIK Nauka (USSR), 7, pp.787~ (1972)