Abstract We study by direct numerical simulation the Rayleigh-Benard convection in supercritical 3He using an anelastic approximation. The latter is based on scaling analysis associated with asymptotic expansions of full governing equations which has important consequence for integration model. approximate are supplemented a parametric state equation and solved numerically finite difference met...


 Rayleigh-Bénard's convection is a classic problem of heat transfer. Since the 1900s, studies for Newtonian fluids have been widely developed in this field and phenomena well understood. On other hand, complexity non-Newtonian behavior makes number much lower. Among behavior, shear-thinning fluid are even rarer. This work focuses on numerical study natural shear thinning, Rayleigh-Bénard ...

To study the flow topology and temperature distribution of Rayleigh-Benard convection in a highly slender cell, measurement simultaneous velocity 3-D domain is required. For this aim, implementing time-resolved PTV two-colour PLIF planned. As part development, for both techniques, experimental setup has been implemented separately to measure 2-D presented paper. PTV, scanning system also utiliz...

A numerical study on the Rayleigh–Benard convection in a shallow cavity filled with different metal-oxide water-based nanofluids is presented through two-phase model, which accounts for effects of Brownian diffusion and thermophoresis, at variable properties temperature. Numerical simulations are executed values average volume fraction nanoparticles, aspect ratios enclosure, as well temperature...

on the onset of triple-diffusive convection in a horizontal layer of nanofluid heated from below and salted from above and below is studied both analytically and numerically. the effects of thermophoresis and brownian diffusion parameters are also introduced through buongiorno model in the governing equations. by using linear stability analysis based on perturbation theory and applying normal m...

The physical configuration of the problem Darcy Brinkman (DB) Rayleigh Benard Two-Component (RBTC) Convection in a two-layered system has been investigated for linear, parabolic and inverted salinity gradients with Dufour effect. For fluid layer, upper boundary is free surface tension porous lower rigid. At interface, normal velocity, stress, shear mass, mass flux, heat, heat flux are continuou...

Control strategy on Rayleigh-Benard convection in rotating nanofluids saturated anisotropic porous layer heated from below is studied the presence of uniformly internal heat source for rigid-rigid, free-free, and lower-rigid upper-free boundaries. Feedback control with an array sensors situated at top plate actuators located bottom are considered this study. Linear stability analysis based norm...