Results 31 to 40 of about 67,930 (246)

Kinetic Energy Transport in Rayleigh--B\'enard Convection

open access: yes, 2014
The kinetic energy balance in Rayleigh--B\'{e}nard convection is investigated for the Prandtl number range $0.01\le Pr \le 150$ and for fixed Rayleigh number $Ra=5\cdot10^{6}$.
Hansen, Ulli   +4 more
core   +1 more source

Prediction of Energy Concentration during Microwave Heating with a Thermal Diffusion Dimensionless Number

open access: yesJournal of Chemical Engineering of Japan
In a previous study, the correlation equation with a dimensionless number (As) of local microwave heating was proposed to solve the problem of a wider temperature distribution caused by heat generation within penetration depth during microwave heating ...
Yusuke Asakuma   +3 more
doaj   +1 more source

Numerical Solution for fluid flow in Horizontal and Inclined Cavities [PDF]

open access: yesAl-Rafidain Journal of Computer Sciences and Mathematics
This study demonstrates how to control fluid flow in inclined and horizontal cavities. The equations governing the problem are established, including the two-dimensional nonlinear partial differential equations of energy, motion, and continuity.
Iman Al-obaidi
doaj   +1 more source

Patterns and bifurcations in low-Prandtl number Rayleigh-Benard convection

open access: yes, 2009
We present a detailed bifurcation structure and associated flow patterns for low-Prandtl number ($P=0.0002, 0.002, 0.005, 0.02$) Rayleigh-B\'{e}nard convection near its onset.
Mishra, Pankaj Kumar   +2 more
core   +1 more source

Prandtl-Blasius temperature and velocity boundary layer profiles in turbulent Rayleigh-B\'{e}nard convection [PDF]

open access: yes, 2010
The shape of velocity and temperature profiles near the horizontal conducting plates in turbulent Rayleigh-B\'{e}nard convection are studied numerically and experimentally over the Rayleigh number range $10^8\lesssim Ra\lesssim3\times10^{11}$ and the ...
Ahlers   +12 more
core   +4 more sources

Small-scale dynamos in simulations of stratified turbulent convection

open access: yes, 2018
Small-scale dynamo action is often held responsible for the generation of quiet-Sun magnetic fields. We aim to determine the excitation conditions and saturation level of small-scale dynamos in non-rotating turbulent convection at low magnetic Prandtl ...
Brandenburg, Axel   +2 more
core   +1 more source

On the local well-posedness of the Prandtl and the hydrostatic Euler equations with multiple monotonicity regions [PDF]

open access: yes, 2014
We find a new class of data for which the Prandtl boundary layer equations and the hydrostatic Euler equations are locally in time well-posed. In the case of the Prandtl equations, we assume that the initial datum $u_0$ is monotone on a number of ...
Igor Kukavica   +4 more
core   +1 more source

Effect of Slip Conditions and Entropy Generation Analysis with an Effective Prandtl Number Model on a Nanofluid Flow through a Stretching Sheet

open access: yesEntropy, 2017
This article describes the impact of slip conditions on nanofluid flow through a stretching sheet. Nanofluids are very helpful to enhance the convective heat transfer in a boundary layer flow.
Mohammad Mehdi Rashidi   +1 more
doaj   +1 more source

Horizontal Shear Instabilities at Low Prandtl Number [PDF]

open access: yesThe Astrophysical Journal, 2020
Abstract Turbulent mixing in the radiative regions of stars is usually either ignored or crudely accounted for in most stellar evolution models. However, there is growing evidence that such mixing is present and can affect various aspects of a star’s life.
openaire   +2 more sources

Prandtl-number Effects in High-Rayleigh-number Spherical Convection [PDF]

open access: yesThe Astrophysical Journal, 2018
Abstract Convection is the predominant mechanism by which energy and angular momentum are transported in the outer portion of the Sun. The resulting overturning motions are also the primary energy source for the solar magnetic field. An accurate solar dynamo model therefore requires a complete description of the convective motions, but ...
Ryan J. Orvedahl   +3 more
openaire   +2 more sources

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