The entrainment due to a turbulent fountain at a density interface
We describe new experiments to measure the penetrative entrainment by a turbulent fountain in a steady two-layer stratification. A theoretical model was established by assuming that the stratification consists of two uniform layers, and the penetrative entrainment rate is estimated quantitatively by...
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| Veröffentlicht in: | Journal of fluid mechanics 2005-11, Vol.542 (1), p.25-52 |
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| container_title | Journal of fluid mechanics |
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| creator | LIN, Y. J. P. LINDEN, P. F. |
| description | We describe new experiments to measure the penetrative entrainment by a turbulent fountain in a steady two-layer stratification. A theoretical model was established by assuming that the stratification consists of two uniform layers, and the penetrative entrainment rate is estimated quantitatively by three independent formulae. Two quasi-uniform layers were observed in the steady state in the laboratory experiments. Experimental results gave a nearly constant dimensionless penetrative entrainment rate (0.65±0.17) across a density interface when the local Richardson number is smaller than 1.2. |
| doi_str_mv | 10.1017/S002211200500635X |
| format | Article |
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| ispartof | Journal of fluid mechanics, 2005-11, Vol.542 (1), p.25-52 |
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| language | eng |
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| source | Cambridge Journals |
| subjects | Entrainment Exact sciences and technology Fluid dynamics Fundamental areas of phenomenology (including applications) Jets Nonhomogeneous flows Physics Stratified flows Turbulent flows, convection, and heat transfer |
| title | The entrainment due to a turbulent fountain at a density interface |
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