Results 231 to 240 of about 3,613,271 (266)

The „NEW“ Mechanics of Fluids of Ludwig Prandtl

2000
The title of this short note comes from a survey lecture delivered at an AGARE) Conference on Flow Separation by Schlichting 1975 in Gottingen, organized for the hundredth anniversary of Prandtl’s birth. Among a number of reasons he alluded for accepting to prepare the lecture on an „account of the scientific life of Ludwig Prandtl“ the most motivating
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Instabilities of convection rolls in a high Prandtl number fluid

Journal of Fluid Mechanics, 1971
An experiment on the stability of convection rolls with varying wave-number is described in extension of the earlier work by Chen & Whitehead (1968). The results agree with the theoretical predictions by Busse (1967a) and show two distinct types of instability in the form of non-oscillatory disturbances.
F. H. Busse, J. A. Whitehead
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Internal waves in a fluid of finite Prandtl number

Geophysical Fluid Dynamics, 1970
Abstract It is shown, through calculation and physical arguments, that in a smoothly stratified fluid thermal diffusion plays a damping role comparable to that of viscosity only in the interior of the fluid, and not in the boundary layers.
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Chemical reaction and heat source/sink effect on magnetonano Prandtl-Eyring fluid peristaltic propulsion in an inclined symmetric channel

Zhongguó wùli xuékan, 2020
The main emphasis of this article is to examine the peristaltic transport of magnetohydrodynamic (MHD) Prandtl-Eyring nanofluid in an inclined symmetric channel with compliant walls.
J. Akram, N. Akbar, Ehnber Maraj
semanticscholar   +1 more source

Prandtl boundary layers for the Phan-Thien Tanner and Giesekus fluid

Zeitschrift für angewandte Mathematik und Physik, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Natural convection of a high Prandtl number fluid in a cavity

International Communications in Heat and Mass Transfer, 2000
Transient natural convection in a square cavity heated with a time-dependent heat flux on one vertical wall and cooled by maintaining the opposite wall at a constant temperature was studied experimentally and numerically. The working fluid was silicon oil (Dow Corning fluid 20–200) with a Prandtl number of 230.
Federico T. Poujol, Jorge Rojas, Eduardo Ramos   +2 more
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Turbulence in a Fluid Stratified by a High Prandtl-Number Scalar

2017
Turbulence in the fluid stratified by a high Prandtl-number (Pr) scalar such as heat (Pr = 7) or salinity (Pr = 700) has been simulated by direct numerical simulations, using 40963 grid points. Computations have been performed using the 1024 nodes of NEC SX-ACE, which have enabled us to resolve the smallest scale of salinity fluctuations \(\sqrt{ 700}(\
Shinya Okino, Hideshi Hanazaki
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The effect of the Prandtl number on magnetoconvection in a horizontal fluid layer

International Journal of Heat and Mass Transfer, 2018
Abstract Linear stability of the buoyant convective flow subject to a uniform magnetic field is investigated. The flow configuration consists of a differentially heated extended horizontal layer of an electrically conducting fluid, placed in a constant vertical magnetic field.
A. Hudoba, S. Molokov
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Numerical Simulation of Oscillatory Convection in a Low Prandtl Fluid

1990
A two-dimensional incompressible fluid analysis was carried out for Case A and Case C of the benchmark problems with using the finite difference method. This paper presents our solution method, calculated results and additional discussions concerning boundary treatment, time increment and allowable mass residual for the continuity equation.
I. Maekawa, Y. Doi
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The Dependence of Eddy Diffusivity on the Fluid Prandtl Number

1959
Publisher Summary This chapter attempts to predict the shape of the energy spectrum F (k) for isotropic velocity fluctuations in an incompressible fluid. It discusses the analysis of isotropic temperature fluctuations in an isotropic turbulence. It was also suggested that the rate of transfer of temperature fluctuation “energy” through wave number ...
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