Results 11 to 20 of about 7,025,656 (234)

Natural convection of large Prandtl number fluids: A controversy answered by a new thermal lattice Boltzmann model

open access: yesCase Studies in Thermal Engineering, 2023
The purpose of this work is to deepen our understanding of natural convection with large Prandtl number fluids and to resolve some controversies in the previous publications.
Sheng Chen   +4 more
doaj   +1 more source

Thermal Convection for Large Prandtl Numbers [PDF]

open access: yesPhysical Review Letters, 2001
The Rayleigh-Benard theory by Grossmann and Lohse [J. Fluid Mech. 407, 27 (2000)] is extended towards very large Prandtl numbers Pr. The Nusselt number Nu is found here to be independent of Pr. However, for fixed Rayleigh numbers Ra> 10^{10} a maximum around Pr= 2 in the Nu(Pr)-dependence is predicted which is absent for lower Ra.
Grossmann, Siegfried, Lohse, Detlef
openaire   +3 more sources

CFD modeling of slurry pipeline at different prandtl numbers

open access: yesJournal of Thermal Engineering, 2021
The present work shows the slurry flow characteristics of glass beads having density 2470 kg/m3 at different Prandtl number through a horizontal pipeline.
Om PARKASH   +2 more
doaj   +1 more source

Hydromagnetic dynamos at the low Ekman and magnetic Prandtl numbers

open access: yesContributions to Geophysics and Geodesy, 2016
Hydromagnetic dynamos are numerically investigated at low Prandtl, Ekman and magnetic Prandtl numbers using the PARODY dynamo code. In all the investigated cases, the generated magnetic fields are dominantly-dipolar.
Ján ŠIMKANIN
doaj   +1 more source

Magnetic and velocity fields in a dynamo operating at extremely small Ekman and magnetic Prandtl numbers

open access: yesContributions to Geophysics and Geodesy, 2017
Numerical simulations of the geodynamo are becoming more realistic because of advances in computer technology. Here, the geodynamo model is investigated numerically at the extremely low Ekman and magnetic Prandtl numbers using the PARODY dynamo code ...
Ján ŠIMKANIN, Juraj KYSELICA
doaj   +1 more source

Ludwig Prandtl - A Personal Biography Drawn from Memories and Correspondence [PDF]

open access: yes, 2005
When Ludwig Prandtl took up the Chair of Applied Mechanics at Göttingen University in 1904, the small university town became the cradle of modern fluid mechanics and aerodynamics.
Johanna Vogel-Prandtl   +2 more
core   +1 more source

Prandtl-number dependence of convection-driven dynamos in rotating spherical fluid shells [PDF]

open access: yes, 2005
The value of the Prandtl number P exerts a strong influence on convection-driven dynamos in rotating spherical shells filled with electrically conducting fluids.
Simitev, R., Busse, F.H.
core   +1 more source

Simulation of Induction at Low Magnetic Prandtl Number [PDF]

open access: yesPhysical Review Letters, 2004
We consider the induction of magnetic field in flows of electrically conducting fluid at low magnetic Prandtl number and large kinetic Reynolds number. Using the separation between the magnetic and kinetic diffusive lengthscales, we propose a new numerical approach.
Ponty, Yannick   +2 more
openaire   +4 more sources

Two-dimensional magnetohydrodynamic turbulence in the limits of infinite and vanishing magnetic Prandtl number [PDF]

open access: yes, 2013
LAKB was supported by an EPSRC post-graduate studentship.We study both theoretically and numerically two-dimensional magnetohydrodynamic turbulence at infinite and zero magnetic Prandtl number $Pm$ (and the limits thereof), with an emphasis on solution ...
Tran, Chuong Van   +2 more
core   +1 more source

Numerical Analysis of Linear Traveling Wave in Rotating Rayleigh–Bénard Convection with an Adiabatic Sidewall

open access: yesFluids, 2023
In rotating Rayleigh–Bénard problems, convection with traveling waves may occur near the sidewalls. The Rayleigh number, Taylor number and Prandtl number are involved in this phenomenon, and the convection mode is determined depending on their values. We
Toshio Tagawa
doaj   +1 more source

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