Results 131 to 140 of about 5,492 (163)

Rotating convection at moderate Prandtl number

Physica A: Statistical Mechanics and its Applications, 1998
Abstract A small rotation is shown to inhibit the spiral chaos which develops in Rayleigh–Benard convection at moderate Prandtl number. Near the critical rotation for the onset of the Kuppers–Lortz instability, large coherent targets embedded in a turbulence background are formed in the case of free-slip top and bottom boundary conditions, while in ...
Y. Ponty, T. Passot, P.L. Sulem
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Convection at very low Prandtl numbers

Physics of Fluids A: Fluid Dynamics, 1990
The transition from thermal convection in the form of rolls in a fluid layer heated from below to traveling wave convection occurs at the Rayleigh number RII=1854 in the limit of low Prandtl numbers and in the presence of no-slip boundaries. While the traveling wave convection exhibits similar properties at moderately low and very low Prandtl numbers ...
Clever, R. M., Busse, F. H.
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Free-convection layers at large prandtl number

Zeitschrift für angewandte Mathematik und Physik ZAMP, 1971
The behavior of laminar free-convection boundary layers at large Prandtl number is considered. Plane and axisymmetric flows are treated simultaneously in terms of a unified formulation. Flow and heat-transfer quantities are expressed in terms of expansions within an inner and an outer layer, both of which lie inside the Prandtl's viscous layer.
openaire   +1 more source

Prandtl number effects in convective turbulence

Journal of Fluid Mechanics, 1999
The effect of Prandtl number on the dynamics of a convective turbulent flow is studied by numerical experiments. In particular, three series of experiments have been performed; in two of them the Rayleigh number spanned about two decades while the Prandtl number was set equal to 0.022 (mercury) and 0.7 (air).
Verzicco, R., Camussi, R.
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The stability of infinite Prandtl number rotating conduction

Physics Letters A, 1998
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Coherent Structures and the Turbulent Prandtl Number

1989
It is experimentally well established that heat spreads faster than momentum in free shear flows |1|. Thus, in the core of a jet, the turbulent Prandtl number Prt is about 0.7. Some measurements suggest that this break-down of the Reynolds analogy (which assumes Prt = 1) may be explained by the role of large-scale structures in the turbulent transport.
M. Favre-Marinet, G. Binder
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Prandtl-number dependence of turbulent flame propagation

Physical Review E, 2001
Inertial-range cascade phenomenology is used to predict Prandtl-number (Pr) dependencies of turbulent flame properties. A unified picture of turbulent flame structure and burning velocity is developed that encompasses all Pr regimes. Implications of the analysis for gaseous flames (Pr near unity), autocatalytic fronts in liquids (high Pr), and ...
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Direct numerical simulation of thermal channel flow for medium–high Prandtl numbers up to

International Journal of Heat and Mass Transfer, 2021
Sergio Hoyas
exaly  

Prandtl Number

1982
J. F. Chaney, V. Ramdas, C. R. Rodriguez, M. H. Wu   +3 more
openaire   +1 more source

Prandtl Number

2010
H. S. Ramaswamy, G. B. Awuah, C. R. Chen
openaire   +1 more source