Results 81 to 90 of about 13,706 (233)

Prandtl number effects in convective turbulence

open access: yes, 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 ...
Camussi, R.   +3 more
core   +1 more source

Experimental Comparison of Impact Behavior in Thin Carbon Fiber Reinforced and 3d Printed Polymeric Plates

open access: yesMacromolecular Symposia, EarlyView.
ABSTRACT This study presents a comparative investigation of the low‐velocity impact behavior of thin plates made from carbon fiber reinforced polymer (CFRP), polylactic acid (PLA), and acrylonitrile butadiene styrene (ABS). Plates with nominal thicknesses of 0.5 and 5 mm were subjected to standardized drop‐weight impact tests to evaluate their energy ...
Mihai Costea   +4 more
wiley   +1 more source

Prandtl number dependence of stellar convection: Flow statistics and convective energy transport

open access: yes, 2021
Context. The ratio of kinematic viscosity to thermal diffusivity, the Prandtl number, is much smaller than unity in stellar convection zones. Aims.
Käpylä, P. J.,   +3 more
core   +1 more source

Finite Difference Analysis of Prandtl Number and Particle Volume Fraction Effects on Skin Friction and Heat Transfer in Buoyancy Driven Two-Phase Flow with Suspended Particulate Matter (SPM)

open access: yesEast European Journal of Physics
A numerical investigation has been conducted on incompressible, laminar two-phase buoyancy driven flow containing suspended particles around a vertical plate. Despite the relevance of such systems, prior studies have largely overlooked natural convection
Sasanka Sekhar Bishoyi   +3 more
doaj   +1 more source

Nonlinear dynamos at infinite magnetic Prandtl number [PDF]

open access: yesPhysical Review E, 2011
The dynamo instability is investigated in the limit of infinite magnetic Prandtl number. In this limit the fluid is assumed to be very viscous so that the inertial terms can be neglected and the flow is slaved to the forcing. The forcing consist of an external forcing function that drives the dynamo flow and the resulting Lorentz force caused by the ...
openaire   +3 more sources

The Combined Effects of Variable Viscosity and Thermal Conductivity of An Unsteady Casson Fluid Flow Along a Vertical Porous Channel With Convective Cooling Walls, Using the Bivariate Spectral Local Linearization Method

open access: yesMathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT This study examines the combined impact of different thermal conductivity and viscosity on unsteady non‐Newtonian Casson fluid flow of incompressible, electrical conductivity in a porous vertical channel with convective cooling walls, uniform magnetic field, and constant pressure gradient.
A. S. Adeyemo   +2 more
wiley   +1 more source

Rapid prediction of Prandtl number of compressed air

open access: yes, 2016
Two methods are presented and compared for quickly calculating this important, yet neglected parameter Over the last few decades, a considerable effort has been directed to toward the evaluation of thermophysical and transport properties of air for a ...
Kashiwao, Tomoaki   +4 more
core  

An asymptotic solution for large Prandtl number free convection

open access: yes, 1968
The set of ordinary differential equations governing free convection boundary layer flow past an isothermal semi-infinite vertical flat plate is solved for large Prandtl numbers by means of the method of matched asymptotic expansions.
Kuiken, H.K.
core   +1 more source

Suggestions for unifying the parametrizations of turbulent orographic form drag, mountain wave drag, and flow blocking

open access: yesQuarterly Journal of the Royal Meteorological Society, EarlyView.
A theory for the interaction between a boundary layer and a low mountain is used to provide estimates of the turbulent orographic form drag, upward‐propagating mountain gravity‐wave drag, and trapped lee‐wave drag (case shown in the figure). After reviewing briefly how these processes are represented in weather and climate models, we propose a ...
Francois Lott   +2 more
wiley   +1 more source

The Hydrothermal Wave Of Large-Prandtl-Number Fluid In A Shallow Cavity

open access: yes, 2007
The hydrothermal wave was investigated numerically for large-Prandtl-number fluid (Pr = 105.6) in a shallow cavity with different heated sidewalls. The traveling wave appears and propagates in the direction opposite to the surface flow (upstream) in the ...
唐泽眉   +2 more
core   +1 more source

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