References of "Hennenberg, M"
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See detailSteady flows of a laterally heated ferrofluid layer: Influence of inclined strong magnetic field and gravity level
Hennenberg, M.; Weyssow, B.; Slavtchev, S. et al

in Physics of Fluids (2006), 18(9),

A horizontal ferrofluid layer is submitted to a lateral heating and to a strong oblique magnetic field. The problem, combining the momentum and heat balance equations with the Maxwell equations ... [more ▼]

A horizontal ferrofluid layer is submitted to a lateral heating and to a strong oblique magnetic field. The problem, combining the momentum and heat balance equations with the Maxwell equations, introduces two Rayleigh numbers, Ra the gravitational one and Ram the magnetic one, to represent the buoyancy and the Kelvin forces, which induce motion, versus the momentum viscous diffusion and heat diffusion. Whatever the inclination of the magnetic field, the steady solution of the problem is presented as a power series of a small parameter epsilon(H) measuring the ratio of variation of the magnetization across the layer divided by the magnitude of the external imposed field. For cases of physical relevance, comparisons between analytical and numerical studies have lead to a major statement: in the strong field region (epsilon(H)<< 1) the zero order solution is the product of the Birikh solution that corresponds to the usual Newtonian fluid submitted to a lateral gradient, multiplied by a modulating factor accounting for inclination and both Rayleigh numbers. Physically, this simplified solution is valid for microgravity conditions where the magnetic field competes enough with microgravity effects to invert the laminar flow and thus suppress the motion for two specific values of the inclination angle. (c) 2006 American Institute of Physics. [less ▲]

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See detailRayleigh-Marangoni-Benard instability of a ferrofluid layer in a vertical magnetic field
Hennenberg, M.; Weyssow, B.; Slavtchev, S. et al

in Journal of Magnetism and Magnetic Materials (2005), 289

This paper compares the relevance of various scaling for the stability study of the Rayleigh-Benard-Marangoni extended problem when a ferrofluid layer is submitted to a weak magnetic field normal to it ... [more ▼]

This paper compares the relevance of various scaling for the stability study of the Rayleigh-Benard-Marangoni extended problem when a ferrofluid layer is submitted to a weak magnetic field normal to it. Some preliminary results are reported. (c) 2004 Elsevier B.V. All rights reserved. [less ▲]

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See detailOn the Rayleigh-Marangoni-Benard instability of a Ferrofluid Layer, submitted to a Vertical Magnetic Field
Hennenberg, M.; Weyssow, B.; Slavtchev, S. et al

in 2nd International Marangoni Association Congress (2004)

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See detailRayleigh-Marangoni-Benard instability of a Ferrofluid Layer, in a Vertical Magnetic Field
Hennenberg, M.; Weyssow, B.; Slavtchev, S. et al

in 10th International Conference on Magnetic Fluids (2004)

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See detailAnalyse de stabilité linéaire d'un ferrofluide saturant un milieu poreux en rotation
Desaive, Thomas ULg; Hennenberg, M.; Dauby, Pierre ULg

in congrès français de mécanique (2003)

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See detailThermal instability of a rotating saturated porous medium heated from below and submitted to rotation
Desaive, Thomas ULg; Hennenberg, M.; Lebon, Georgy ULg

in European Physical Journal B -- Condensed Matter (2002), 29(4), 641-647

In this work, we study the problem of onset of thermal convection in a rotating saturated porous medium heated from below. The effect of rotation is restricted to the Coriolis force, neglecting thus the ... [more ▼]

In this work, we study the problem of onset of thermal convection in a rotating saturated porous medium heated from below. The effect of rotation is restricted to the Coriolis force, neglecting thus the centrifugal effects, the porous medium is described by Brinkman's model. The linear eigenvalue problem is solved by means of a modified Galerkin method. The behavior of the critical temperature gradient is discussed in terms of various parameters of the system for both stationary and overstable convections. Finally a weakly nonlinear analysis is provided to derive amplitude equations and to study the onset of Kuppers-Lortz instability. [less ▲]

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See detailLinear coupling between the Rayleigh-Bénard instability and rotation for a ferrofluid in a normal magnetic fluid
Hennenberg, M.; Weyssow, B.; Desaive, Thomas ULg et al

in The first international conference on applications of porous media (2002)

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See detailLinear and nonlinear thermal instability of a rotating saturated porous medium heated from below
Desaive, Thomas ULg; Hennenberg, M.; Lebon, Georgy ULg

in 1st international conference on applications of porous media (2002)

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See detailCoupled capillary and gravity-driven instability in a liquid film overlying a porous layer
Desaive, Thomas ULg; Lebon, Georgy ULg; Hennenberg, M.

in Physical Review E (2001), 64(6, Pt 2), 66304

In this work, we study the problem of onset of thermal convection in a fluid layer overlying a porous layer, the whole system being heated from below. We use Brinkman's model to describe the porous medium ... [more ▼]

In this work, we study the problem of onset of thermal convection in a fluid layer overlying a porous layer, the whole system being heated from below. We use Brinkman's model to describe the porous medium and determine the corresponding linear stability equations. The eigenvalue problem is solved by means of a modified Galerkin method. The behavior of the critical wave number and temperature gradient is discussed in terms of the various parameters of the system. We also emphasize the influence of the boundary conditions at the upper surface of the fluid layer; in particular, we examine the role of a free surface whose surface tension is temperature dependent (Marangoni effect). Comparison with earlier works is also made. [less ▲]

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See detailCoupling between Rayleigh-Bénard and rotation for a ferrofluid in a normal strong magnetic field
Hennenberg, M.; Weyssow, B.; Desaive, Thomas ULg et al

in 6th workshop on transport phenomena in two-phase flow, (2001)

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See detailCoupled capillary and gravity-driven instabilities in a bilayer porous liquid system
Desaive, Thomas ULg; Bragard, J.; Lebon, Georgy ULg et al

in 52nd annual meeting of the division of fluid dynamics of the American physical society (1999)

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