Results 191 to 200 of about 1,072,644 (236)

Predictive accuracy of Boussinesq approximation in opposed mixed convection with a high-temperature heat source inside a building

Building and Environment, 2018
The density model of Boussinesq approximation has been extensively used in mixed convection. Literature have investigated the validity of Boussinesq approximation in natural convection; however, there is no related study in mixed convection.
Mengying Wang, Yi Wang
exaly   +2 more sources

ON THE OBERBECK-BOUSSINESQ APPROXIMATION

Mathematical Models and Methods in Applied Sciences, 1996
This paper deals with a derivation (using a perturbation technique) of an approximation, due to Oberbeck8,9 and Boussinesq,1 to describe the thermal response of linearly viscous fluids that are mechanically incompressible but thermally compressible. The present approach uses a nondimensionalization suggested by Chandrasekhar2 and utilizing the ratio ...
Rajagopal, Kumbakonam Ramamani, Růžička, Michael, Srinivasa, Arun R.   +2 more
openaire   +3 more sources

Flow of nanoliquid past a vertical plate with novel quadratic thermal radiation and quadratic Boussinesq approximation: Sensitivity analysis

, 2020
The effects of quadratic thermal radiation and quadratic Boussinesq approximation are investigated on the heat transport of a 36 nm Al2O3 − H2O nanofluid over a vertical plate.
B. Mahanthesh, J. Mackolil
semanticscholar   +1 more source

Approximate Symmetries of the Boussinesq Equation

Quaestiones Mathematicae, 2003
In this paper we show that all exact symmetries of the linear wave equation are inherited by the Boussinesq type equation with a small parameter as approximate symmetries in any order of precision. We find an approximate integral­ differential transformation of any order of precision, which transforms the Boussinesq type equation into the linear wave ...
Baikov, V.A., Kordyukova, S.A.
openaire   +2 more sources

On the validity of Boussinesq approximation in transient simulation of single-phase natural circulation loops

International Journal of Thermal Sciences, 2016
Dipankar N Basu
exaly   +2 more sources

Local energy balance, specific heats and the Oberbeck–Boussinesq approximation

International Journal of Heat and Mass Transfer, 2009
A thermodynamic argument is proposed in order to discuss the most appropriate form of the local energy balance equation within the Oberbeck-Boussinesq approximation. The study is devoted to establish the correct thermodynamic property to be used in order
A Barletta
exaly   +3 more sources

Theoretical and analytical analysis of convective heat transport of radiated micropolar fluid over a vertical plate under nonlinear Boussinesq approximation

, 2020
In heat transfer problems, if the temperature difference is not sufficiently so small then the linear Boussinesq approximation is not adequate to describe thermal analysis. Also, nonlinear density variation with respect to temperature/concentration has a
D. Mahanty, R. Babu, B. Mahanthesh
semanticscholar   +1 more source

Effect of the Boussinesq approximation: Turbulence studies with GRILLIX in slab geometry

Contributions To Plasma Physics, 2018
The drift‐reduced global Braginskii system is implemented in GRILLIX, a plasma turbulence code that is able to treat diverted geometries by using the flux‐coordinate independent approach (FCI).
Andreas Stegmeir, D Coster
exaly   +2 more sources

Magnetic buoyancy and the Boussinesq approximation

Geophysical & Astrophysical Fluid Dynamics, 1982
Abstract The full Boussinesq equations for hydromagnetic convection are derived and shown to include the effects of magnetic buoyancy. Instabilities caused by magnetic buoyancy are analyzed and their roles in double convection are brought out.
E. A. Spiegel, N. O. Weiss
openaire   +1 more source

Approximate Inertial Manifolds to the Newton-Boussinesq Equations

Journal of Partial Differential Equations, 1996
The authors construct two approximate inertial manifolds for the following two-dimensional Newton-Boussinesq equations: \[ {\partial\over\partial t} \Delta\psi+J(\psi,\Delta\psi)=\Delta^2\psi-{R_a\over P_r} {\partial\theta\over\partial x},\quad {\partial\theta\over\partial t}+J(\psi,\theta)={1\over P_r} \Delta\theta, \] where \(J(u,v)=u_yv_x-u_xv_y\), \
Guo, Boling, Wang, Bixiang
openaire   +2 more sources