Results 41 to 50 of about 9,868,888 (379)
Prandtl-number Effects in High-Rayleigh-number Spherical Convection [PDF]
The 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
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Prandtl-Blasius temperature and velocity boundary layer profiles in turbulent Rayleigh-B\'{e}nard convection [PDF]
, 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
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International Journal of Thermofluids, 2023 Laminar, steady-state, natural convection of Bingham fluids in trapezoidal enclosures with a heated bottom wall, cooled inclined sidewalls and an adiabatic top wall has been studied based on numerical simulations for a range of values of nominal Bingham ...
S. Malkeson +2 more
doaj +1 more source
Prandtl-, Rayleigh-, and Rossby-number dependence of heat transport in turbulent Rotating Rayleigh-Bénard convection [PDF]
Physical Review Letters, 2009 Experimental and numerical data for the heat transfer as a function of the Rayleigh-, Prandtl-, and Rossby numbers in turbulent rotating Rayleigh-Benard convection are presented. For relatively small $Ra ~ 10^8$ and large Pr modest rotation can enhance the heat transfer by up to 30%. At larger Ra there is less heat-transfer enhancement, and at small Pr
Zhong, JQ +5 more
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A study of Free Convection in A solar Chimney Model [PDF]
Engineering and Technology Journal, 2011 A solar chimney is a hot air channel attached to a circular translucent roof opens at the periphery. The roof and the ground below it form an air collector. It enhances natural ventilation by employing air temperature difference between channal inlet and
Sabah Tarik Ahmed, Miqdam Tariq Chaichan
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Rayleigh-Benard stability and the validity of quasi-Boussinesq or quasi-anelastic liquid approximations [PDF]
, 2016 The linear stability threshold of the Rayleigh-Benard configuration is analyzed with compressible effects taken into account. It is assumed that the fluid obeys a Newtonian rheology and Fourier's law of thermal transport with constant, uniform (dynamic ...
Alboussiere, Thierry, Ricard, Yanick
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Double-Diffusive Effects on the Onset of Rayleigh-Benard Convection of Water-Based Nanofluids
Applied Sciences, 2022 A numerical study on the Rayleigh–Benard convection in a shallow cavity filled with different metal-oxide water-based nanofluids is presented through a two-phase model, which accounts for the effects of the Brownian diffusion and thermophoresis, at ...
Massimo Corcione, Alessandro Quintino
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, 2011 Rigorous upper limits on the vertical heat transport in two dimensional Rayleigh-Benard convection between stress-free isothermal boundaries are derived from the Boussinesq approximation of the Navier-Stokes equations. The Nusselt number Nu is bounded in
Charles R. Doering +2 more
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Double-diffusive convection in a rotating cylindrical annulus with conical caps [PDF]
, 2011 Double-diffusive convection driven by both thermal and compositional buoyancy in a rotating cylindrical annulus with conical caps is considered with the aim to establish whether a small fraction of compositional buoyancy added to the thermal buoyancy (or
Simitev, R. D.
core +3 more sources
Analysis of Dual Heat Sources in a Partially Open Enclosure
Advances in Mechanical Engineering, 2013 In this study a partially open enclosure with two heat sources is examined to determine the Nusselt number along the hot wall. The first part of the study examines the effect of the Rayleigh number ratio on the Nusselt number. The largest Rayleigh number
M. McGarry, James G. Kohl
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