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Author:Janhunen, Salomon
Title:Gyrokinetic field-particle code for plasma turbulence studies
Gyrokineettinen kenttä-hiukkaskoodi plasman turbulenssin mallintamiseen
Publication type:Master's thesis
Publication year:2004
Pages:51      Language:   eng
Department/School:Teknillisen fysiikan ja matematiikan osasto
Main subject:Ydin- ja energiatekniikka   (Tfy-56)
Supervisor:Salomaa, Rainer
Instructor:Heikkinen, Jukka
OEVS:
Electronic archive copy is available via Aalto Thesis Database.
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Location:P1 Ark TF80     | Archive
Keywords:plasma turbulence
kinetic theory of plasma
computational physics
turbulenssi
kineettinen plasman teoria
laskennallinen fysiikka
Abstract (eng): The study of transport processes in fusion plasmas has been revolutionized by the use of massively parallel computers.
The transport of energy and particles in current fusion experiments is seen to be primarily due to turbulence, and turbulence suppression has been observed in a number of experimental scenarios.

In this work we describe the development of a numerical model for simulating transport processes in Tokamak plasmas.
The work includes description of the kinetic theory on which the numerical model is based on (gyro-kinetic theory), the magnetic field background of the numerical model, the implementation of the model and theoretical comparisons based on the Weiland model (a fluid model with an asymptotic closure).
We also describe the inclusion of various diagnostics in the code.
Abstract (fin): Fuusioplasman kuljetusilmiöiden tutkimus on kokenut mullistuksen nyt, kun suuria laskentaresursseja on saatavilla.
Kokeissa havaittu hiukkasten ja energian kulkeutuminen plasmassa on pääasiassa turbulenssin ja pyörteilyn aiheuttamaa, ja turbulenssin on nähty vähenevän tietyissä koejärjestelyissä.

Työssä esitetty tietokonemalli soveltuu tällaisten ilmiöiden mallintamiseen.
Tässä työssä esittelemme plasman kuljetusilmiöiden mallintamiseen kehitettävää tietokonemallia.
Työssä esitellään numeerisessa mallissa käytettyä plasman kineettistä teoriaa (gyrokineettinen teoria) ja magneettikentän taustaa, numeerisen mallin toteutusta.

Työssä johdetaan magnetohydrodynaaminen nestemalli epävakaisuuksien tutkimiseksi (Weilandin malli) ja vertaillaan koodin tuloksia tähän.
Selitämme myös työn yhteydessä ohjelmoitujen koodissa tehtävien mittausten teoreettista taustaa.
ED:2004-07-13
INSSI record number: 25427
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