Numerical study of subcritical Rayleigh–Bénard convection rolls in strongly shear-thinning Carreau fluids

Autor: Emmanuel Plaut, Antoine Briard, Mathieu Jenny

Publikováno v: Journal of Non-Newtonian Fluid Mechanics
Journal of Non-Newtonian Fluid Mechanics, 2015, 219, pp.19-34. ⟨10.1016/j.jnnfm.2015.03.002⟩
Journal of Non-Newtonian Fluid Mechanics, Elsevier, 2015, 219, pp.19-34. ⟨10.1016/j.jnnfm.2015.03.002⟩

International audience; Abstract The Rayleigh–Bénard thermoconvection of Newtonian fluids has been extensively studied. The transition from the conductive, static state to thermoconvection flows corresponds in this case to a supercritical bifurcat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5804aa3f9b09bad9ed68590cccc57da
https://doi.org/10.1016/j.jnnfm.2015.03.002

Petrov–Galerkin computation of nonlinear waves in pipe flow of shear-thinning fluids: First theoretical evidences for a delayed transition

Autor: Emmanuel Plaut, Nicolas Roland, Chérif Nouar

Publikováno v: Computers & Fluids. 39:1733-1743

A pseudospectral Petrov–Galerkin code is developed in order to compute nonlinear traveling waves in pipe flow of shear-thinning fluids. The framework is continuum mechanics and the rheological model used is the purely viscous Carreau model. The cod

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::902ed1ed7150898b2e2d8874026c46c8
https://doi.org/10.1016/j.compfluid.2010.06.011

Weakly nonlinear analysis of Rayleigh–B\' enard convection in shear-thinning fluids: nature of the bifurcation and pattern selection

Autor: Mondher Bouteraa, Emmanuel Plaut, Chérif Nouar, Aurélie Kalck, Christel Métivier

Publikováno v: Journal of Fluid Mechanics
Journal of Fluid Mechanics, Cambridge University Press (CUP), 2015, 767, pp.696-734. ⟨10.1017/jfm.2015.64⟩

A linear and weakly nonlinear analysis of convection in a layer of shear-thinning fluids between two horizontal plates heated from below is performed. The objective is to examine the effects of the nonlinear variation of the viscosity with the shear

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce675102a110383272dcee17a26729f3
https://hal.univ-lorraine.fr/hal-01417333

Low-Prandtl-number convection in a rotating cylindrical annulus

Autor: Emmanuel Plaut, Friedrich H. Busse

Publikováno v: Journal of Fluid Mechanics. 464:345-363

Motivated by recent experimental results obtained in a low-Prandtl-number fluid (Jaletzky 1999), we study theoretically the rotating cylindrical annulus model with rigid boundary conditions. A boundary layer theory is presented which allows a systema

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::55970b0bd2f850a6d8eaf3427207d112
https://doi.org/10.1017/s0022112002008923

Spatio-temporal patterns in the thermoconvection of a planar nematic layer: I. Weakly nonlinear models

Autor: R. Ribotta, Emmanuel Plaut

Publikováno v: The European Physical Journal B. 5:265-281

We study theoretically the formation of convection patterns in a laterally extended planar nematic layer heated from below, in the linear and weakly nonlinear regimes. By reformulating the viscous coupling terms of the basic nematohydrodynamic equati

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6279d1921b1e6e04bcfa3fcb9b05acab
https://doi.org/10.1007/s100510050444