Results 161 to 170 of about 5,282 (200)

High Prandtl number convection

Physics of the Earth and Planetary Interiors, 1979
Abstract The theory of convection in a layer heated from below is reviewed with particular emphasis on the limit of infinite Prandtl number. The review is restricted to qualitative properties of the problems which do not depend on special conditions. Similarities and differences between convection in a plane layer and in a spherical shell are pointed
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Thermosolutal convection at infinite Prandtl number: initial layer and infinite Prandtl number limit

Applicable Analysis, 2013
We examine the initial layer problem and the infinite Prandtl number limit of the thermosolutal convection, which is applicable to magma chambers. We derive the effective approximating system of the Boussinesq system at large Prandtl number using two time scale approach [M.
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Prandtl-Zahl Pr (Prandtl number Pr)

2000
Es handelt sich um eine dimensionslose Kombination von Stoffwerten, die damit einerseits wiederum ein Stoffwert ist, andererseits aber audi als Kennzahl im Sinne der Dimensionsanalysis angesehen werden kann.
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A Reinterpretation of the Turbulent Prandtl Number

Industrial & Engineering Chemistry Research, 2002
The eddy viscosity at any location in fully developed turbulent flow in a round pipe is shown by an exact analysis to be simply the ratio of the shear stress due to the time-averaged turbulent fluc...
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Thermally driven flows at low Prandtl numbers: An extension of the Prandtl-Batchelor theorem

International Journal of Engineering Science, 1995
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Blythe, P. A., Liakopoulos, A., Haruta, E.   +2 more
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Turbulente Prandtl-Zahl Prt (turbulent Prandtl number Prt)

2000
Es handelt sich urn eine Stromungsgrose (keine Stoffgrose), die in Analogie zur molekularen Prandtl-Zahl (einer Stoffgrose) eingefuhrt worden ist. Sie ist keine dimensionslose Kennzahl im Sinne der Dimensionsanalysis.
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Turbulent Thermal Convection at Arbitrary Prandtl Number

The Physics of Fluids, 1962
The mixing-length theory of turbulent thermal convection in a gravitationally unstable fluid is extended to yield the dependence of Nusselt number H/H0 on both Prandtl number σ and Rayleigh number Ra. The analysis assumes a layer of Boussinesq fluid contained between infinite, horizontal, perfectly conducting, rigid plates.
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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.
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Turbulent Prandtl number in circular pipes

International Journal of Heat and Mass Transfer, 1984
Presentation d'une methode de calcul du nombre de Prandtl pour un ecoulement turbulent dans une conduite circulaire a partir du nombre de Nusselt. Resultats obtenus pour differents fluides a differentes temperatures: eau, CO 2 , glycerol, ethylene ...
A. Malhotra, S.S. Kang
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Anomalous convection at low Prandtl number

Communications in Applied Numerical Methods, 1989
AbstractThe steady‐state natural convection of a fluid of low Prandtl number contained within a two‐dimensional rectangular box is simulated for conditions of an imposed horizontal temperature gradient and conducting horizontal surfaces. By the application of numerical bifurcation and continuation techniques combined with the finite‐element method the ...
K. H. Winters, R. O. Jack
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