Results 51 to 60 of about 102,404 (168)
Kelvin-Helmholtz billows above Richardson number $1/4$
, 2019 We study the dynamical system of a forced stratified mixing layer at finite Reynolds number $Re$, and Prandtl number $Pr=1$. We consider a hyperbolic tangent background velocity profile in the two cases of hyperbolic tangent and uniform background buoyancy stratifications.
Parker, J. P. +2 more
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Richardson Number and Ocean Mixing: Towed Chain Observations
Journal of Physical Oceanography, 2004 Abstract A 7.2-km tow in the upper seasonal thermocline of the Sargasso Sea with an 80-m aperture thermistor– conductivity chain and shipborne 150-kHz ADCP is examined to determine the relationship between patches of scalar activity and buoyancy frequency, vertical shear, and gradient Richardson number (Ri). The horizontal temperature gradient variance
S. A. Mack, H. C. Schoeberlein
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Alexandria Engineering Journal, 2018 The present study has been considered in heat, mass transfer and the reversal flow occurrence inside the annulus of concentric vertical cylinders numerically.
Mohamed A. Teamah +3 more
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Stratified shear flow instabilities at large Richardson numbers [PDF]
Physics of Fluids, 2009 Numerical simulations of stratified shear flow instabilities are performed in two dimensions in the Boussinesq limit. The density variation length scale is chosen to be four times smaller than the velocity variation length scale so that Holmboe or Kelvin–Helmholtz unstable modes are present depending on the choice of the global Richardson number Ri ...
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Case Studies in Thermal Engineering, 2017 In this paper, the mixed natural-forced convection is experimentally investigated for the heat transfer oil-copper oxide (HTO-CuO) nanofluid flow upward in a vertical tube.
F. Hekmatipour +3 more
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Propulsion and Power Research, 2019 In this study, numerical analysis and optimization in a single and multiple walled carbon nanotube-water nanofluid filled lid driven cavity having an inner elliptic obstacle were performed by using finite element method and COBYLA optimization solver ...
Fatih Selimefendigil
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Simple methods of evaluating Richardson's number and Scorer's parameter
Australian Meteorological Magazine, 1966 Richardson's number (Ri) Ri = gθ∂θ∂z(∂V~∂z)2 was modified to the finite difference form Ri=R|Δlnp|Δ(T-Tθ)|ΔV~|2 and the numerator of the expression represented as an area on a Herlofson skew T - log p diagram. An. overlay was constructed which enables the rapid evaluation of Richardson's number without arithmetical calculations.
K.T. Spillane, J.R. Colquhoun
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FluidsResults are presented from a series of small-scale laboratory experiments designed to model dense gas dispersion around an isolated cuboid building. Experiments were conducted for a broad range of flow Richardson numbers and source discharge rates, and ...
Romana Akhter, Nigel B. Kaye
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Case Studies in Thermal EngineeringThe following comments identify incorrect transport mechanisms, missing physical dimensions, missing physical parameters, undefined variables, incorrect governing equations and boundary conditions, incorrect/missing references, incorrect/missing thermo ...
Soumyanil Sadhu Deep +4 more
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Experimental Analysis on the Water Entrainment of Turbidity Current over a Mobile Bed
علوم آب و خاک, 2019 Study of Turbidity Current, as one of the most important phenomena affecting the sedimentation in the reservoirs of dams, is essential. Since most of the research studies have been conducted under experimental conditions on rigid beds, the effect of ...
A. Sharifnezhad +2 more
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