Results 201 to 210 of about 9,963,654 (229)
Some of the next articles are maybe not open access.
High Prandtl number convection
Physics of the Earth and Planetary Interiors, 1979Abstract 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
openaire +1 more source
Thermosolutal convection at infinite Prandtl number: initial layer and infinite Prandtl number limit
Applicable Analysis, 2013We 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.
openaire +1 more source
Prandtl-Zahl Pr (Prandtl number Pr)
2000Es 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.
openaire +1 more source
A Reinterpretation of the Turbulent Prandtl Number
Industrial & Engineering Chemistry Research, 2002The 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...
openaire +1 more source
Thermally driven flows at low Prandtl numbers: An extension of the Prandtl-Batchelor theorem
International Journal of Engineering Science, 1995zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Blythe, P. A. +2 more
openaire +1 more source
Turbulente Prandtl-Zahl Prt (turbulent Prandtl number Prt)
2000Es 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.
openaire +1 more source
Turbulent Thermal Convection at Arbitrary Prandtl Number
The Physics of Fluids, 1962The 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.
openaire +1 more source
Free-convection layers at large prandtl number
Zeitschrift für angewandte Mathematik und Physik ZAMP, 1971The 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
Anomalous convection at low Prandtl number
Communications in Applied Numerical Methods, 1989AbstractThe 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
openaire +1 more source
Rotating convection at moderate Prandtl number
Physica A: Statistical Mechanics and its Applications, 1998Abstract 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
openaire +1 more source