Browse > Article

Behavior of Non-buoyant Round Jet under Waves  

Ryu, Yong-Uk (River and Coast Research Division, KICT)
Lee, Jong-In (River and Coast Research Division, KICT)
Kim, Young-Taek (River and Coast Research Division, KICT)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.19, no.6, 2007 , pp. 596-605 More about this Journal
Abstract
The behavior of a non-buoyant turbulent round jet discharging horizontally was investigated experimentally. The instantaneous velocity field of the jet was obtained using the particle image velocimetry (PIV) method and used to calculate the mean velocity field by phase-averaging. This study tested regular waves with a relatively small wave height for a wavy environmental flow. The centerline and cross-sectional velocity profiles were reported to demonstrate the effect of the waves on the jet diffusion in respect of wave height and wave phase. The wave phase effect was studied for three phases: zero-upcrossing point, zero-downcrossing point, trough. From the results, it is found that the centerline velocity decreases and width of the cross-sectional profile increases as the wave height increases. In addition, the self-similarity of the cross-sectional profile appears to break down although the width of each case along the axial distance does not vary significantly. The phase effect is found to be relatively small compared to the wave height effect.
Keywords
non-buoyant round jet; particle image velocimetry(PIV); centerline velocity; self-similarity; regular wave;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Antonia, R.A. and Bilger, R.W. (1973). An experimental investigation of an axisymmetric jet in a co-flowing air stream. Journal of Fluid Mechanics, 61, 805-822   DOI
2 Camussi, R., Guj, G. and Stella, A. (2002) Experimental study of a jet in a crossflow at very low Reynolds number. Journal of Fluid Mechanics, 454, 113-144   DOI   ScienceOn
3 Cowen, E.A., Chang, K.-A. and Liao, Q. (2001). A single camera coupled PTV-LIF technique. Experiments in Fluids, 31, 63-73   DOI
4 Lam, K.M. and Chan, C.H.C. (2002). Time-averaged mixing behavior of circular jet in counterflow: Velocity and concentration measurements. Journal of Hydraulic Engineering, 128, 861-865   DOI   ScienceOn
5 Chan, C.H.C. and Lam, K.M. (1998). Centerline velocity decay of a circular jet in a counterflowing stream. Physics of Fluids, 10, 637-644   DOI   ScienceOn
6 Fischer, H.B., List, E.J., Koh, R.C.Y., Imberger, J. and Brooks, N.H. (1979) Mixing in inland and coastal waters, Academic Press, New York
7 Chu, P.C.K., Lee, J.H. and Chu, V.H. (1999). Spreading of turbulent round jet in coflow. Journal of Hydraulic Engineering, 125, 193-204   DOI   ScienceOn
8 Mori, N. and Chang, K.-A. (2003). Experimental study of a horizontal jet in a wavy environment. Journal of Engineering Mechanics, 129, 1149-1155   DOI   ScienceOn
9 Pope, S.B. (2000). Turbulent flows, Cambridge University Press, Cambridge, England
10 Chin, D.A. (1988). Model of buoyant jet-surface wave interaction. Journal of Waterway, Port, Coastal, and Ocean Engineering, 114, 331-345   DOI
11 Hussein, H.J., Capp, S.P. and George, W.K. (1994). Velocity measurements in a high-Reynolds-number, momentum-conserving, axisymmetric turbulent jet. Journal of Fluid Mechanics, 258, 31-75   DOI   ScienceOn
12 Koole, R. and Swan, C. (1994). Measurement of a 2-D nonbuoyant jet in a wave environment. Coastal Engineering, 24, 151-169   DOI   ScienceOn
13 김영도, 서일원, 강시환, 오병철 (2000). 3차원 원역모형을 이용한 수중방류수의 근역 혼합특성 민감도 분석. 대한 토목학회논문집, 20(5B), 689-700
14 Andreopoulos, J. and Rodi, W. (1984). Experimental investigation of jets in a cross flow. Journal of Fluid Mechanics, 138, 93-127   DOI   ScienceOn
15 Rajaratnam, N. (1976). Turbulent jets, Elsevier Scientific, Amsterdam, The Netherlands
16 Shuto, N. and Ti, L.H. (1974). Wave effects on buoyant plumes. Proceedings of the 14th International Conference on Coastal Engineering, Copenhagen, 2199-2208
17 이재형, 서일원 (1996). 수중 다공확산에 의해 방류된 온수의 확산거동 예측. 대한토목학회논문집, 16(II-3), 281-290
18 Chin, D.A. (1987). Influence of surface waves on outfall dilution. Journal of Hydraulic Engineering, 113, 1006-1018   DOI   ScienceOn
19 Chyan, J.M. and Hwung, H.H. (1993). On the interaction of a turbulent jet with waves. Journal of Hydraulic Research, 31, 791-810   DOI