Abstract
The flow pattern around a thin strip horizontally towed at constant velocity in a continuously stratified liquid is visualized by conventional “Vertical slit-Foucault’s knife”, “Maksoutov’s slit-thread” and “horizontal slit-regular grating” methods. Using these sensitive high-resolution methods enables to reveal new kind of the streaky structure including a sequence of thin sloping interfaces both on the strip surface and inside its wake. When velocity or distance from the strip increases, the streaks may be turned into the sloping or nearly horizontal interfaces. Reconnections of outer edges of the streaks result in appearance of a set of symmetrical “butterfly-like” vortices, which are perturbed by a shear flow inside the downstream wake. Lift forces caused by a slope of the strip produce an asymmetry of the wake and lead to fast degeneration ofthe streaky structures.
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Baydulov, V. G. and Chashechkin, Yu. D., A Boundary Current Induced by Diffusion Near a Motionless Horizontal Cylinder in a Continuously Stratified Fluid, Izvestiya — Atmosph. and Oceanic Phys., 32–6 (1996), 751–756.
Baydulov, V. G., Mitkin, V. V. and Chashechkin, Yu. D., The Flow Formation Past Start of Motion of a Horizontal Cylinder in a Continuously Stratified Liquid, Izvestiya — Atmosph. and Oceanic Phys.” 35–6 (1999), 821–828.
Chashechkin, Yu. D., Schlieren Visualization of a Stratified Flow Around a Cylinder, J. of Visualization, 1–4 (1999), 345–354.
Chashechkin, Yu. D. and Mitkin, V. V.; Experimental Study of a Fine Structure of2D Wakes and Mixing Past an Obstacle in a Continuously Stratified Fluid, Dynamics of Atmosphere and Oceans, 34 (2001, a), 165–187.
Chashechkin, Yu. D. and Mitkin, V. V., An Effect of a Lift Force on the Structure of Attached Internal Waves in a Continuously Stratified Fluid, Doklady Physics, 46-6 (2001, b), 425–428.
Guillaume, D. V. and La Rue, J. C., Comparison of the Vortex Shedding Behavior of a Single Plate and a Plate Array, Experiments in Fluids, 30-1 (2001), 22–26.
Honji, H., Streaked Flow Around an Oscillating Circular Cylinder, J. of Fluid Mech., 107 (1981), 509–520.
Kistovich, A V. and Chashechkin, Yu. D., The Structure of Transient Boundary Flow Along an Inclined Plane in a Continuously Stratified Medium, J. Appl. Math. Mech., 57-4 (1993),633–639.
Kozlov, V. V. and Grek G. R., Control by Stationary and Non-stationary Streaky Structure and Their Secondary Instability, ADVANCES IN TURBULENCE-VIII, Proceeding of the Eighth Turbulence Conference, C. Dopazo et al. (Eds), CIMNE, Barcelona (2000), 121–124.
Nakamura, Y., Ohya, Y. and Tsuruta, H., Experiments on Vortex Shedding From Flat Plates with Square Leading and Trailing Edges, J. of Fluid Mech., 222 (1991), 437–447.
Okajima, A., Matsumoto, T. and Kimura, S., Aerodynamic Characteristics of Flat Plates with Various Angles of Attack in Oscillatory Flow, JSME Intern. J., Series B, 41-1 (1998), 214–219.
Phillips, O. M., On Flows Induced by Diffusion in a Stably Stratified Fluid, Deep-Sea Res., 17 (1970), 435–443.
Tatsuno, M. and Bearman, P. V., A Visual Study of the flow Around an Oscillating Circular Cylinder at low KeuleganCarpenter Numbers and Low Stokes Numbers, J. of Fluid Mech., 211 (1990), 157–182.
Vasiliev, A. Yu. and Chashechkin, Yu. D., Generation of 3D Periodic Internal Wave Beams in Exponentially Stratified Liquid, J. Appl. Math. Mech., 67-3 (2003), 442–452.
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Yuli D. Chashechkin received his Eng degree in 1964 from Moscow En gin eer in g-Ph ysics Institute, and his Dr. of Sci. (Math and Phys) in the Institute for Problems in Mechanics ofthe RAS in 1981 where he is Head of the Laboratory of Fluid Mechanics. He is a professor of the MV. Lomonosov Moscow State University from 1987. His research interests are geophysical fluid mechanics including optic and acoustic visualisation, theory offree stratified flows.
Vladimir V. Mitkin graduated from Moscow Institute of Physics and Technology in 1995 and received his Ph. D. degree in the Institute for Problems in Mechanics ofthe RAS in 1998. His research interests are visualization offluid flows and measurements offlow parameters.
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Chashechkin, Y.D., Mitkin, V.V. A visual study on flow pattern around the strip moving Uniformly in a continuously stratified fluid. J Vis 7, 127–134 (2004). https://doi.org/10.1007/BF03181585
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DOI: https://doi.org/10.1007/BF03181585