Events – PhD Seminars

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PhD Seminars Anniversary Event

PhD Seminars Special Edition with Nelly Litvak

PhD Seminars Anniversary Event

PhD Seminars Special Edition with Nelly Litvak

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2:00 pm: PhD Seminars XI

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Calendar

2:00 pm: PhD Seminars XI

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Seminars Archive by category "Events"

Nathalie GAYRAUD 2017/09/07 2017/09/07Events, Seminars

This year’s PhD seminars concluded with an anniversary event that marked both the 2 years since their creation and the end of the Digital Health, Biology and Earth chapter. Program 14:00 Event opening by Denis Talay and Gérard Giraudon 14:30 2 Years of Phd Seminars: Key numbers by Konstantinos Mavreas…

Nathalie GAYRAUD 2017/06/13 2017/09/08Events 0

Chairman Dimitra Politaki – NEO Speaker: Professor Nelly Litvak, University of Twente Talk 1 Title: Story-telling Abstract: When writing a paper or a grant proposal you will often hear `high-level’ advice such as: `write easier’, `make it crystal clear’, `explain what is new’, `make it exciting’. I will explain two hands-on…

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3 2:00 pm: PhD Seminars XI July 3, 2019 2:00 pm – 4:00 pm Talk 1 Speaker Marco Benzi (BIOVISION) Title From chaos, structure: bringing order into research coding. Abstract Scientific coding is often seen as disposable, given that is a side product of PhD experimentation. The purpose of this talk is to summarize some tips and tricks that should help avoid having to redo boilerplate code, make it easier to find and avoid bugs and allow a more pleasant experience when developing. Talk 2 Speaker Ali Elarif (CASTOR) Title C^1 finite element discretization of a streamfunction formulation of the reduced MHD equations in tokamaks. Abstract We are dealing with the numerical approximation of magnetohydrodynamic (MHD) instabilities of an incompressible ionized gas (plasma) in the tokamaks (a toroidal device in which plasma is confined thanks to a very strong applied magnetic field). In the approximation used by physicists, these models involve two divergence-free vectors : the magnetic field and velocity. By writing these vector fields as rotationals of two stream functions, we obtain a system of partial differential equations in which differential terms of order 4 appear. The conforming approximation of these terms requires finite elements with C1 regularity. The use of stream functions provides a natural way to achieve the divergence-free constraints. We also assume that the flows are independent of the toroidal coordinate and the resulting model is thus 2-D. We have implemented a C1 finite element method on general triangles : the so-called Clough Tocher finite element. The developed method is applied to solve the tilting MHD instabilities and plasma equilibrium in tokamaks in axisymmetric configuration. Results are shown to agree with other studies and theoretical scaling results. More