Non-Oberbeck-Boussinesq effects due to large temperature differences in a differentially heated square cavity filled with air
Sign Up to like & getrecommendations! Published in 2019 at "International Journal of Heat and Mass Transfer"
DOI: 10.1016/j.ijheatmasstransfer.2018.06.079
Abstract: Abstract We numerically investigate non-Oberbeck-Boussinesq (NOB) effects due to large temperature differences in a two-dimensional differentially heated square cavity using low-Mach-number equations. The working fluid is air and the Prandtl number Pr is 0.71 for… read more here.
Keywords: number; nob effects; velocity; temperature differences ... See more keywords
On the Oberbeck–Boussinesq approximation for gases
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Non-linear Mechanics"
DOI: 10.1016/j.ijnonlinmec.2021.103738
Abstract: Abstract The Oberbeck–Boussinesq (OB) approximation for a compressible fluid in Benard’s problem geometry is studied. We present a new derivation of the classical and ’extended’ OB models for a fluid obeying the ideal gas state… read more here.
Keywords: boussinesq approximation; fluid; geometry; approximation gases ... See more keywords
Initial–boundary layer associated with the nonlinear Darcy–Brinkman–Oberbeck–Boussinesq system
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DOI: 10.1016/j.physd.2016.08.002
Abstract: Abstract In this paper, we study the vanishing Darcy number limit of the nonlinear Darcy–Brinkman–Oberbeck–Boussinesq system (DBOB). This singular perturbation problem involves singular structures both in time and in space giving rise to initial layers,… read more here.
Keywords: brinkman oberbeck; system; darcy brinkman; nonlinear darcy ... See more keywords
Direct numerical simulations of Rayleigh–Bénard convection in water with non-Oberbeck–Boussinesq effects
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2019.787
Abstract: Rayleigh–Bénard convection in water is studied by means of direct numerical simulations, taking into account the variation of properties. The simulations considered a three-dimensional (3-D) cavity with a square cross-section and its two-dimensional (2-D) equivalent,… read more here.
Keywords: rayleigh nard; convection water; numerical simulations; oberbeck boussinesq ... See more keywords
Significance of non-Oberbeck-Boussinesq effects augmented by power-law rheology in natural convection studies around fins
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DOI: 10.1063/1.5115185
Abstract: The augmentation and diminution of non-Oberbeck-Boussinesq (NOB) effects due to power-law rheology cause significant changes in the results and associated implications of natural convection studies. This study focuses on the combined effect of spatial arrangement… read more here.
Keywords: oberbeck boussinesq; rheology; power law; natural convection ... See more keywords