Results 101 to 110 of about 13,706 (233)
Critical Prandtl number for Heat Transfer Enhancement in Rotating Convection
, 2023 Rotation, which stabilizes flow, can enhance the heat transfer in Rayleigh-B\'enard convection (RBC) through Ekman pumping. In this Letter, we present the results of our direct numerical simulations of rotating RBC, providing a comprehensive analysis of ...
Anas, Mohammad, Joshi, Pranav
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Lubrication Science, Volume 38, Issue 5, Page 301-326, August 2026.ABSTRACT Porous gas bearings (PGBs) enable high‐speed, oil‐free operation in modern rotating machinery. This study develops a coupled thermo‐hydrodynamic (THD) model for a cylindrical porous gas bearing lubricated with four working fluids—air, R‐134a, helium and hydrogen.
S. Bechiri, B. Bouchehit, B. Bou‐Saïd
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Infinite Prandtl number limit of Rayleigh‐Bénard convection
, 2004 We rigorously justify the infinite Prandtl number model of convection as the limit of the Boussinesq approximation to the Rayleigh-Bénard convection as the Prandtl number approaches infinity. This is a singular limit problem involving an initial layer. ©
Xiaoming Wang, Wang, Xiaoming
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Case Studies in Thermal EngineeringThis article discusses the simultaneous influence of thermophoresis, Brownian motion, and the dispersion of nanoparticles on thermal enhancement in non-Newtonian fluid existing over a surface stretching with non-uniform velocity.
M. Nawaz +5 more
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Impact of Prandtl numbers on turbulence modeling
Journal of Physics: Conference Series, 2019 Abstract A low-Reynolds number (LRN) k - ε ˜
Md Mizanur Rahman, Ming LV, Zefei Zhu
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Mathematical Methods in the Applied Sciences, Volume 49, Issue 10, Page 10312-10333, 15 July 2026.ABSTRACT The planar and radial thermal free jets for forced convection of a non‐Newtonian power‐law fluid are investigated. The thermal diffusivity is dependent on the shear‐rate and is not a constant. The flow in planar and radial thermal free jets is governed by the momentum, continuity and energy balance equations. In the stream‐function formulation,
Avnish Bhowan Magan, Rehana Naz
wiley +1 more source
Patterns and bifurcations in low–Prandtl-number Rayleigh-Bénard convection
, 2010 We present a detailed bifurcation structure and associated flow patterns for low–Prandtl-number (P=0.0002, 0.002, 0.005, 0.02) Rayleigh-Bénard convection near its onset.
P. Wahi +5 more
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Thermo‐Hydrodynamic Processes of Microparticles in Fractures: A CFD–DEM Approach
International Journal for Numerical and Analytical Methods in Geomechanics, Volume 50, Issue 10, Page 4230-4246, July 2026.ABSTRACT Controlling fracture permeability plays a critical role in subsurface energy applications, particularly in geothermal energy production and enhanced carbon sequestration, where regulating fluid flow is essential. The use of microcapsules has become a promising solution to enhance fracture permeability by providing a controlled sealing ...
Hoai Thanh Nguyen, Pania Newell
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Bound on vertical heat transport at large Prandtl number
, 2007 We prove a new upper bound on the vertical heat transport in Rayleigh-Bénard con-vection at large (but finite) Prandtl number that agrees with the (optimal) Ra 1 3 bound (modulo logarithmic correction) on vertical heat transport for the infinite Prandtl ...
Xiaoming Wang, Wang, Xiaoming
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Viscous and Magnetic Boundary Layers at the Top of the Core in Geodynamo Models
Journal of Geophysical Research: Solid Earth, Volume 131, Issue 7, July 2026.Abstract We investigate the boundary layer at the top of the Earth's core, which acts as a filter between the interior of the core and its surface, where models built from geomagnetic data are derived. We rely on no‐slip convective geodynamo numerical simulations calculated for a low viscosity fluid, with Ekman numbers E=10−6 $E=1{0}^{-6}$ and E=10−7 ...
D. Jault +4 more
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