Richardson number (Ri)
On the computation of planetary boundary-layer height using the bulk Richardson number method
... For an atmosphere with discernible characteristics (i.e., a strongly stable potential temperature profile for the type I SBL, a strong LLJ for the type II SBL, and a capping inver- sion layer for the UBL), the three ...
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Shear induced breaking of large internal solitary waves
... In contrast to the situation obtaining with the above periodic internal waves, experi- ments of the stability of large amplitude ISWs have not yet been published. Estimates of the minimal values of Ri in large amplitude, ...
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HEAT TRANSFER AND CU-WATER NANOFLUID FLOW IN A VENTILATED CAVITY HAVING CENTRAL COOLING CYLINDER AND HEATED FROM THE BELOW CONSIDERING THREE DIFFERENT OUTLET PORT LOCATIONS
... Nusselt number increases with reduction of Richardson ...all Richardson number, it is clear that the most preferable heat transfer is obtained, when the outlet port of the vented cavity is ...
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EFFECT OF BUOYANCY ON THE FLOW AROUND TAPERED TRAPEZOIDAL PRISM
... Reynolds number and at fixed Prandtl number ...Reynolds number is gradually increased the flow separation takes place at the trailing edge of the cylinder which results in the formation of two ...
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Numerical Analysis of MHD Mixed Convection Flow in a Parallelogramic Porous Enclosure Filled with Nano Fluid and in Presence of Magnetic Field Induction
... of Richardson number on the uid ow, magnetic potential, and heat transfer characteristics in the presence of magnetic eld in- duction (Rem = 100) will be ...the Richardson number value ...
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Turbulent mixing at a stable density interface : the variation of the buoyancy flux–gradient relation
... where d is the turbulent eddy scale fixed by the device geometry. This mixing length is proportional to the Ozmidov length. The choice of energy production is crucial in the BLY model. Of most interest is the ...
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Effect of alternating magnetic field on unsteady MHD mixed convection and entropy generation of ferro fluid in a linearly heated two-sided cavity
... eld had the tendency to slow down the movement of the buoyancy induced ow in the cavity, which will be discussed in the next section. Figure 3(a) shows that when the ow is dominated by forced convection Ri 1, uid ow is ...
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Mixed convection fluid flow and heat transfer and optimal distribution of discrete heat sources location in a cavity filled with nanofluid
... length, Richardson number and Grashof number on optimal heat source location has been ...Nusselt number on the heat source for two models of nanofluid, constant properties and variable ...
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Influence of volatile degassing on initial flow structure and entrainment during undersea volcanic fire fountaining eruptions
... the Richardson num- ber ...the Richardson number for any set of eruption parameters (mag- ma discharge rate and volatile content) will de- pend on water depth as a result of the extent to which the ...
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Numerical Simulation of Mixed Convection Flows in a Square Double Lid-Driven Cavity Partially Heated Using Nanofluid
... Nusselt number. The value of average Nusselt number increases by increasing the Reynolds number from 1 to 100 in these cases, about ...Reynolds number equal to 1 for all Richardson ...
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MHD Mixed Convection Flow in a Lid Driven Enclosure with a Sinusoidal Wavy Wall and a Heated Circular Body
... Grashof number and square of Reynolds number is less than 1, which means that Richardson number Ri < 1 , the forced convection is ...
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Hydrodynamic Mixed Convection in a Lid Driven Hexagonal Cavity with Corner Heater
... Variation of streamlines and isotherms for different values of Richardson number Ri = 0.01-10 while Ha = 50 and Pr = 0.71 are shown in Figure 4. It can be found that the strength of buoyancy inside the ...
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Baroclinic instability of a symmetric, rotating, stratified flow: a study of the nonlinear stabilisation mechanisms in the presence of viscosity
... the growth. As expected (see Sect. 2), this behaviour is very different from linear baroclinic adjustment which would re- quire (see, for example, Emanuel, 1988) the “global” (i.e. at the boundaries of the flow domain) ...
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Characterization of unsteady double-diffusive mixed convection flow with soret and dufour effects in a square enclosure with top moving lid
... The horizontal and vertical velocity profiles along the mid-plane of the enclosure are displayed in Figs. 9&10, respectively. As can be seen that when𝑅𝑖 < 1, the influence of SD-effects on velocity profiles seems ...
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Numerical simulation of double diffusive mixed convection and entropy generation in a lid driven trapezoidal enclosure with a heat source
... Lewis number, buoyancy ratio, Richardson number, direction of lid movement and the heat source location are discussed and assessed, and the implications of using these parameters on heat and mass ...
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Evolution and characteristics of forced shear flows in polytropic atmospheres: Large and small Péclet number regimes
... changes with time. In stratified systems this modification has two sources: The change in the Brunt-V¨ais¨al¨a frequency, due to changes in the averaged density and temperature profiles, and the change in turnover rates ...
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Influence of stability on the flux-profile relationships for wind speed, , and temperature, , for the stable atmospheric boundary layer
... fourth order structure function, related to the Kurtosis or flat- ness, may also be used as a measure of intermittency. Fig- ure 12 compares the cumulative PDF’s of a strongly strati- fied situation in SABLES98 with a ...
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Circulation and salt intrusion in the Piacaguera Channel, Santos (SP)
... Analysis of thermohaline properties and currents sampled at an anchor station in the Piaçaguera Channel (Santos Estuary) in the austral winter was made in terms of tidal (neap and spring tidal cycles) and non-tidal ...
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Study of near surface boundary layer characteristics during pre-monsoon seasons using micrometeorological tower observations
... Near surface boundary layer characteristics are investigated through the vertical variation of fluxes of heat, moisture, momentum, kinetic energy and Richardson number during the pre-mo[r] ...
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Numerical study of a combined convection flow in a cavity filled with nanofluid considering effects of diameter of nanoparticles and cavity inclination angles
... as Richardson number, inclination angle, diameter of nanoparticles and solid volume concentration of the Al2O3 nanoparticles on the flow and thermal fields and heat transfer inside the cavity with heated ...
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