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The finite Larmor radius regime : collisional setting and fluid models

Abstract : The subject matter of this paper concerns the derivation of fluid limits for gyro-kinetic models. The arguments apply for any collision kernel satisfying the usual conservations (mass, momentum, kinetic energy) and possessing a production entropy sign. We describe the set of equilibria in terms of several moments, we determine the average collision invariants, and we write the associated macro-scopic equations and the entropy inequality.
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Contributor : Mihai Bostan <>
Submitted on : Monday, August 19, 2019 - 9:13:38 PM
Last modification on : Friday, January 24, 2020 - 1:21:41 AM
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Mihai Bostan, Aurélie Finot. The finite Larmor radius regime : collisional setting and fluid models. Communications in Contemporary Mathematics, World Scientific Publishing, In press, ⟨10.1142/S0219199719500470⟩. ⟨hal-01706310v2⟩



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