Results 131 to 140 of about 8,619,254 (233)

Eddy diffusivity based comparisons of turbulent prandtl number for boundary layer and free jet flows with reference to fluids of very low prandtl number

, 1993
It is shown that turbulent Prandtl numbers for turbulent boundary layer and jet flows correlate well if compared on the basis of eddy diffusivity. Experimental data for liquid sodium (Pr= 0.0058) lead to a universal expression relating turbulent Prandtl ...
Bremhorst, K., Krebs, L.
core   +1 more source

Bound on vertical heat transport at large Prandtl number

, 2007
We prove a new upper bound on the vertical heat transport in Rayleigh-Bénard con-vection at large (but finite) Prandtl number that agrees with the (optimal) Ra 1 3 bound (modulo logarithmic correction) on vertical heat transport for the infinite Prandtl ...
Xiaoming Wang, Wang, Xiaoming
core   +1 more source

Near wall Prandtl number effects on velocity gradient invariants and flow topologies in turbulent Rayleigh-Bénard convection. [PDF]

Sci Rep, 2020
Yigit S, Hasslberger J, Klein M, Chakraborty N.   +3 more
europepmc   +1 more source

Infinite Prandtl number limit of Rayleigh‐Bénard convection

, 2004
We rigorously justify the infinite Prandtl number model of convection as the limit of the Boussinesq approximation to the Rayleigh-Bénard convection as the Prandtl number approaches infinity. This is a singular limit problem involving an initial layer. ©
Xiaoming Wang, Wang, Xiaoming
core   +1 more source

Effect of Prandtl Number on Mixed Convective Heat Transfer from a Porous Cylinder in the Steady Flow Regime. [PDF]

Entropy (Basel), 2020
Yu S, Tang T, Li J, Yu P.
europepmc   +1 more source

Numerical Study of Convective Flow of Casson Fluid Through an Infinite Vertical Plate with Induced Magnetic Field

East European Journal of Physics
The present objective is to numerically analyze the induced magnetic field (IMF) effect of an unsteady MHD flow of Casson fluid through two infinite vertical plates. The effect of radiative heat has been scrutinized. Governing non-dimensional PDEs of the
Hiren Deka, Parismita Phukan
doaj   +1 more source

A laboratory-scale experiment and a numerical simulation of unusual spiral plumes in a High-Prandtl-number fluid, links supplementary material

, 2014
We experimentally and numerically investigated the generation of plumes from a local heat source (LHS) and studied the interaction of these plumes with cellular convective motion (CCM) in a rectangular cavity filled with silicon oil at a Prandtl number ...
Anatoly N Poludnitsin (8009489), Bezprozvannikh, Vladimir A, Vladimir A Bezprozvannikh (8009486), Poludnitsin, Anatoly N, Albert N Sharifulin (8009483), Sharifulin, Albert N   +5 more
core   +1 more source

Enhancing Thermal-Hydraulic Modelling in Dual Fluid Reactor Demonstrator: The Impact of Variable Turbulent Prandtl Number

Energies
In response to the growing demand for advanced nuclear reactor technologies, this study addresses significant gaps in thermal-hydraulic modelling for dual fluid reactors (DFRs) by integrating Kays correlation to implement a variable turbulent Prandtl ...
Hisham Elgendy, Sławomir Kubacki, Konrad Czerski   +2 more
doaj   +1 more source

Patterns and bifurcations in low–Prandtl-number Rayleigh-Bénard convection

, 2010
We present a detailed bifurcation structure and associated flow patterns for low–Prandtl-number (P=0.0002, 0.002, 0.005, 0.02) Rayleigh-Bénard convection near its onset.
P. Wahi, Verma, M. K., Wahi, P., Mishra, P. K., P. K. Mishra, M. K. Verma   +5 more
core   +1 more source

Stationary statistical properties of Rayleigh-Bénard convection at large Prandtl number

, 2006
This is the third in a sequel in our study of Rayleigh-Bénard convection at large Prandtl number. More specifically we investigate if stationary statistical properties of the Boussinesq system for Rayleigh-Bénard convection at large Prandtl number are ...
Xiaoming Wang, Wang, Xiaoming
core   +1 more source