Emmanuel Plaut

Research by topics and publication list

• Do not hesitate to ask postprints.

• I like and I liked Slow Science, especially, during my conversion from the topics of Transition to turbulence to the one of Turbulence, say, between 2014 and 2020 !

• In collaboration with Stefan Heinz from the University of Wyoming, we have obtained an exact Reynolds-Average Navier-Stokes (RANS) eddy-viscosity equation in turbulent wall flows. We used it to test existing RANS models with an eddy-viscosity equation, and to propose a new version of the scale-adaptive simulation model of Menter & Egorov (2010). Please have a look at our article 22. Hopefully, a new k - ν_t turbulence model with a very accurate wall damping is born !..

• In collaboration with Gerald Steinfeld from the University of Oldenburg, I tried to develop Large Eddy Simulations (LES) of turbulent flows in the Atmospheric Boundary Layer, with the PALM code, for Wind Energy applications. Arthur Lagel and Arnaud Técher, students of Mines Nancy, worked in 2020 on their Master 2 Semester Project on this topic. They ran the first simulations in Nancy of LES models of an Atmospheric Boundary Layer, from which this movie has been made:
  

  The benchmark case of Anderson, Basu & Letchford (2007) has been studied, but with the dynamic LES model of Heinz (2008), which has been made available only very recently in PALM. Interestingly, as compared with the standard non dynamic Moeng & Wyngaard (1988) model, rather different results are obtained.

• With Matthieu Gisselbrecht, we tested the RANS k - ε model in pipe flow, see our communication at Congrès Français de Mécanique 2015.

[22]	Plaut, E. & Heinz, S. 2022 Exact eddy-viscosity equation for turbulent wall flows - Implications for Computational Fluid Dynamics models. AIAA Journal. |  hal-03708277

[21]	Plaut, E., Roland, N. & Nouar, C. 2017 Nonlinear waves with a threefold rotational symmetry in pipe flow: influence of a strongly shear-thinning rheology. J. Fluid Mech. |  hal-01517796
[20]	Jenny, M., Plaut, E. & Briard, A. 2015 Numerical study of subcritical Rayleigh-Bénard convection rolls in strongly shear-thinning Carreau fluids. J. Non Newt. Fluid Mech. |  hal-01417334
[19]	Bouteraa, M., Nouar, C., Plaut, E., Métivier, C. & Kalck, A. 2015 Weakly nonlinear analysis of Rayleigh-Bénard convection in shear-thinning fluids: nature of the bifurcation and pattern selection. J. Fluid Mech.  |  hal-02916086
[18]	Chekila, A., Nouar, C., Plaut, E. & Nemdili, A. 2011 Subcritical bifurcation of shear-thinning plane Poiseuille flows. J. Fluid Mech. |  hal-01498811
[17]	Roland, N., Plaut, E. & Nouar, C. 2010 Petrov-Galerkin computation of nonlinear waves in pipe flow of shear-thinning fluids: first theoretical evidences for a delayed transition. Computers & Fluids. |  hal-03792139

[16]	Gravier, É. & Plaut, E. 2013 Kinetic water-bag model of global collisional drift waves and ion temperature gradient instabilities in cylindrical geometry. Phys. Plasmas. |  hal-01287079
[15]	Gravier, É., Plaut, E., Caron, X. & Jenny, M. 2013 Transitions between drift waves in a magnetized cylindrical plasma: experiments and fluid model, solved with a spectral method. Eur. Phys. J. D. |  hal-01287083

[14]	Plaut, E., Lebranchu, Y., Jenny, M. & Serre, E. 2011 Structure and stability of annular sheared channel flows: effects of confinement, curvature and inertial forces - waves. Eur. Phys. J. B. |  hal-01023235
[13]	Plaut, E., Lebranchu, Y., Simitev, R. & Busse, F. H. 2008 Reynolds stresses and mean fields generated by pure waves: applications to shear flows and convection in a rotating shell. J. Fluid Mech. |  hal-03808114
[12]	Plaut, E. & Busse, F. H. 2005 Multicellular convection in rotating annuli. J. Fluid Mech. |  hal-03814037
[11]	Plaut, E. 2003 Nonlinear dynamics of traveling waves in rotating Rayleigh-Bénard convection: effects of the boundary conditions and of the topology. Phys. Rev. E. |  hal-03814061
[10]	Plaut, E. & Busse, F. H. 2002 Low-Prandtl-number convection in a rotating cylindrical annulus. J. Fluid Mech. |  hal-03815702

[9]	Gleeson, J. T., Gheorghiu, N. & Plaut, E. 2002 Electric Nusselt number characterization of electroconvection in nematic liquid crystals. Eur. Phys. J. B. |  hal-03815707
[8]	Dressel, B., Joets, A., Pastur, L., Pesch, W., Plaut, E. & Ribotta, R. 2002 Competition of periodic and homogeneous modes in extented dynamical systems. Phys. Rev. Lett. |  hal-03815709
[7]	Plaut, E. & Pesch, W. 1999 Extended Weakly Nonlinear Theory of Planar Nematic Convection. Phys. Rev. E. |  hal-03815713
[6]	Plaut, E., Decker, W., Rossberg, A. G., Kramer, L., Pesch, W., Belaidi, A. & Ribotta, R. 1997 New symmetry breaking in nonlinear electroconvection of nematic liquid crystals. Phys. Rev. Lett. |  hal-03827472
[5]	Plaut, E., Pastur, L. & Ribotta, R. 1998 Spatio-temporal patterns in the Thermoconvection of a planar nematic layer: II. Experiments. Eur. Phys. J. B. |  hal-03827507
[4]	Plaut, E. & Ribotta, R. 1998 Spatio-temporal patterns in the Thermoconvection of a planar nematic layer: I. Weakly nonlinear models. Eur. Phys. J. B. |  hal-03827525
[3]	Plaut, E. & Ribotta, R. 1997 Weakly nonlinear analysis of the secondary bimodal instability in planar nematic convection. Phys. Rev. E. |  hal-03828239
[2]	Plaut, E. & Ribotta, R. 1997 Cascade of structures in the thermoconvection of a nematic in the director-dominated regime. EuroPhys. Lett. |  hal-03828371
[1]	Plaut, E., Joets, A. & Ribotta, R. 1997 Optical characterization of the director field in a distorted nematic layer. J. Phys. III France. |  jpa-00249732