Stratified Propelled Wakes
نویسندگان
چکیده
منابع مشابه
A comparative study of self-propelled and towed wakes in a stratified fluid
Direct numerical simulations (DNS) of axisymmetric wakes with canonical towed and self-propelled velocity profiles are performed at Re=50 000 on a grid with approximately 2 billion grid points. The present study focuses on a comparison between towed and self-propelled wakes and on the elucidation of buoyancy effects. The development of the wake is characterized by the evolution of maxima, area ...
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Wakes of towed and self-propelled bodies moving in stably stratified flows are of relevance to environmental and ocean engineering applications. To date, the majority of studies focused on the wakes of spheres and cylinders in stratified flows. Stable stratification modulates the wake dynamics, leading to a significantly different flow compared to non-stratified wakes. The wakes of spheres and ...
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Near wakes behind a sphere in both homogeneous and linearly stratified background were studied numerically and experimentally at Reynolds number Re ≤ 1000, Froude number Fr ≥ 0.5. In a homogeneous fluid, the structural transitions with increasing Re are consistent with previous studies. The stratified results from simulations and experiments are in good agreement. Stratified wakes undergo simil...
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THREE-DIMENSIONAL WAKES IN LINEARLY STRATIFIED LIQUIDS by Philip J. Stockhausen, Charles B. Clark Submitted to the Department of Civil Engineering on May 26, 1966, in partial fulfillment of the requirements for the degree of Master of Science. The wake and the zone of turbulently mixed fluid behind a threedimensional body in a liquid with a linear density gradient were studied. The objective of...
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A flow that arises in a turbulent wake behind a body that moves in a stratified fluid is rather peculiar. With a relatively weak stratification a turbulent wake first develops essentially in the same way as in a homogeneous fluid and extends symmetrically. However, buoyancy forces oppose vertical turbulent diffusion. Therefore a wake has flattened form at large distances from the body and, fina...
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