COMET

Multiphysical Couplings and Transfers – COMET

COMET studies different physical phenomena resulting from temperature, density, electric current or magnetic field inhomogeneities, and their coupling in volume or at interfaces, and at relevant scales. The group uses numerical simulations and laboratory experiments, complemented by analytical and theoretical interpretations. This work can be applied to energy conversion and storage, heat transfer and energy process optimization.

The team studies various physical phenomena resulting from inhomogeneities of temperature, density, electric current or magnetic field, and their coupling in volume or at interfaces, and at relevant scales.
The group uses numerical simulations and laboratory experiments, complemented by analytical and theoretical interpretations.
This work can be applied to energy conversion and storage, heat transfer and energy process optimization.

In more detail, the topics covered are:

  • Magnetohydrodynamics (MHDMagnétohydrodynamique), which describes the motion of an electrically conductive fluid in which the velocity and magnetic induction fields are coupled by Lorentz’s force and Ohm’s law;
  • Convection, which occurs in flows in the presence of temperature or density gradients, with or without phase change. Energy systems (secondary refrigeration, photovoltaic panels) are concerned;
  • transfers at interfaces, cryonanothermics and two-phase flows; this ranges from the Kapitza thermal resistance existing at the silicon/superfluid helium interface to the numerical modeling of incompressible or compressible two-phase flows at low Mach number;
  • the phenomena at work in thermo-acoustic machines, in particular within a heat pump intended for land vehicles, or in free surface systems (calefaction or super-hydrophobic wetting).

Coordination

Recent publications

  • Article dans une revue

    Filip Novkoski, Jules Fillette, Chi-tuong Pham, Eric Falcon. Nonlinear dynamics of a hanging string with a freely pivoting attached mass. Physica D: Nonlinear Phenomena, 2024, 463, pp.134164. ⟨10.1016/j.physd.2024.134164⟩. ⟨hal-04560135⟩

    COMET

    Year of publication

    Available in free access

  • Article dans une revue

    Thibaut Couchoux, Tristan Jaouen, Christelle Melodelima-Gonindard, Pierre Baseilhac, Arthur Branchu, et al.. Performance of a Region of Interest–based Algorithm in Diagnosing International Society of Urological Pathology Grade Group ≥2 Prostate Cancer on the MRI-FIRST Database—CAD-FIRST Study. European Urology Oncology, 2024, S2588-9311 (24), pp.00056-7. ⟨10.1016/j.euo.2024.03.003⟩. ⟨hal-04549487⟩

    COMET

    Year of publication

    Available in free access

  • Pré-publication, Document de travail

    Chris I. Juric, Damir Juric. Fluid Dynamics Simulation on a GPU. 2024. ⟨hal-04545934⟩

    COMET

    Year of publication

    Available in free access

  • Article dans une revue

    Anne Sergent, Patrick Le Quéré. Long time evolution of large-scale patterns in a rectangular Rayleigh-Bénard cell. Journal of Physics: Conference Series, 2011, 318 (8), pp.082010. ⟨10.1088/1742-6596/318/8/082010⟩. ⟨hal-04519827⟩

    COMET

    Year of publication

    Available in free access

  • Article dans une revue

    Sleimane Nasser El Dine, Xavier Mininger, Caroline Nore. Thermomagnetic convection control strategies for electromagnetic devices immersed in a ferrofluid. Journal of Magnetism and Magnetic Materials, 2024, ⟨10.1016/j.jmmm.2024.171876⟩. ⟨hal-04496453⟩

    COMET, COMET

    Year of publication

  • Thèse

    Melvin Creff. Role of energy transfers in the dynamo effect : application to the von Kármán flow. Fluid mechanics [physics.class-ph]. Université Paris-Saclay, 2023. English. ⟨NNT : 2023UPAST214⟩. ⟨tel-04477539⟩

    COMET

    Year of publication

    Available in free access

  • Article dans une revue

    L Chen, Wietze Herreman, K Li, P W Livermore, J W Luo, et al.. The optimal kinematic dynamo driven by steady flows in a sphere. Journal of Fluid Mechanics, 2018, 839, pp.1 – 32. ⟨10.1017/jfm.2017.924⟩. ⟨hal-04466160⟩

    COMET

    Year of publication

    Available in free access

  • HDR

    Virginie Daru. Modélisation et simulation numérique d’écoulements compressibles. Mécanique des fluides [physics.class-ph]. Sorbonne université, 2020. ⟨tel-04438209⟩

    COMET

    Year of publication

    Available in free access

  • Article dans une revue

    Wietze Herreman. Minimal perturbation flows that trigger mean field dynamos in shear flows. Journal of Plasma Physics, 2018, 84 (3), pp.735840305. ⟨10.1017/S0022377818000508⟩. ⟨hal-04466147⟩

    COMET, COMET

    Year of publication

  • Article dans une revue

    Gerrit Maik Horstmann, W. Herreman, T. Weier. Linear damped interfacial wave theory for an orbitally shaken upright circular cylinder. Journal of Fluid Mechanics, 2020, 891, pp.A22. ⟨10.1017/jfm.2020.163⟩. ⟨hal-04410506⟩

    COMET

    Year of publication

    Available in free access