TSVV-G meeting (MHD: XTOR etc)
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Status of XTOR-KSpeakers: Guillaume Brochard (CEA), Hinrich Lutjens (CEA)
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Comparisons between XTOR and JOREK. Van-Kampen model and recent results with VENUS-KMHD. Plans for the code.
Links to a series of papers, discussing the difference between the Van Kampen and Landau spectra and how they match when adding dissipation. In particular, the collisionless Landau spectrum is recovered by the Van Kampen spectra when adding some form of dissipation (physical collisions or hyperdiffusion) and taking the limit of dissipation going to zero. Key in understanding these results is realizing that adding dissipation is a singular perturbation, so that taking the limit dissipation->0 is not equivalent as dissipation=0.
Papers by Ng, Bhattacharjee, Skiff:
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.83.1974https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.92.065002
Paper & thesis by Bratanov
https://pubs.aip.org/aip/pop/article/20/2/022108/107223/Aspects-of-linear-Landau-damping-in-discretized
https://www.theorie.physik.uni-muenchen.de/TMP/theses/thesis_bratanov.pdfOriginal paper by VanKampen, reconciling the apparent paradox between undamped singular VanKampen modes and smooth (collisionless) damped Landau modes:
https://www.sciencedirect.com/science/article/pii/S0031891455930688Speakers: Hugo Jean Elie Chkroun (EPFL), Jeanquartier Fabien Nicolas (EPFL), Jonathan Graves (EPFL), Marcus Quantril (University of York), Stephan Brunner (EPFL)Links to a series of papers, discussing the difference between the Van Kampen and Landau spectra and how they match when adding dissipation. In particular, the collisionless Landau spectrum is recovered by the Van Kampen spectra when adding some form of dissipation (physical collisions or hyperdiffusion) and taking the limit of dissipation going to zero. Key in understanding these results is realizing that adding dissipation is a singular perturbation, so that taking the limit dissipation->0 is not equivalent as dissipation=0.Papers by Ng, Bhattacharjee, Skiff:Paper & thesis by BratanovOriginal paper by VanKampen, reconciling the apparent paradox between undamped singular VanKampen modes and smooth (collisionless) damped Landau modes:
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