One-dimensional particle models for heat transfer analysis (Articolo in rivista)

Type
Label
  • One-dimensional particle models for heat transfer analysis (Articolo in rivista) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Alternative label
  • Bufferand H.; Ciraolo G.; Ghendrih Ph.; Tamain P.; Bagnoli F.; Lepri S.; Livi R. (2010)
    One-dimensional particle models for heat transfer analysis
    in Institute of physics conference series
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Bufferand H.; Ciraolo G.; Ghendrih Ph.; Tamain P.; Bagnoli F.; Lepri S.; Livi R. (literal)
Pagina inizio
  • 012005 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 260 (literal)
Rivista
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  • fasc. (1). Journal of Physics-Conference Series. Theory of Fusion Plasmas: Joint Varenna–Lausanne International Workshop. IOP Publishing (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • a) M2P2, UMR 6181 - CNRS Aix-Marseille Universite - Ecole Centrale, Marseille, Technopole de Chateau Gombert, 38, Rue F. Joliot-Curie, 13451 Marseille, France b) CEA, IRFM, 13108 St Paul-Lez-Durance, France c) Dipartimento di Energetica, Università di Firenze, Via S. Marta 3, I-50139 Firenze, Italy d) Instituto dei Sistemi Complessi, Consiglio Nazionale delle Ricerche, via Madonna del Piano 10, I-50019 Sesto Fiorentino, Italy e) Dipartimento di Fisica, Università di Firenze, via G. Sansone 1 I-50019, Sesto Fiorentino, Italy (literal)
Titolo
  • One-dimensional particle models for heat transfer analysis (literal)
Abstract
  • For a better understanding of Spitzer-Härm closure restrictions and for estimating the relevancy of this expression when collisionnality decreases, an effort is done in developing simple models that aim at catching the physics of the transition from conductive to free-streaming heat flux. In that perspective, one-dimensional particle models are developed to study heat transfer properties in the direction parallel to the magnetic field in tokamaks. These models are based on particles that carry energy at a specific velocity and that can interact with each other or with heat sources. By adjusting the particle dynamics and particle interaction properties, it is possible to generate a broad range of models of growing complexity. The simplest models can be solved analytically and are used to link particle behavior to general macroscopic heat transfer properties. In particular, some configurations recover Fourier's law and make possible to investigate the dependance of thermal conductivity on temperature. Besides, some configurations where local balance is lost require defining non local expression for heat flux. These different classes of models could then be linked to different plasma configurations and used to study transition from collisional to non-collisional plasma. (literal)
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