Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Modelling of Dust Transport in Reverse Field Pinch Configuration
KTH, School of Electrical Engineering (EES), Space and Plasma Physics.
2013 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The DDFTU code has been modified and updated to study the transport of dust in the reverse field pinch (RFP) EXTRAP-T2R. The DDFTU code solves the coupled equations of charging, heating and motion of a dust grain immersed in a plasma whose profiles are given. Updates of the code have been introduced to include (i) non-steady state heat balance and phase transitions models, (ii) realistic boundary conditions for dust-wall collisions, and (iii) a radius and temperature-dependent thermal radiation model, for which a dedicated code has been developed. The models for secondary electron emission (SEE), thermionic emission and magnetic dipole force have been refined as well, the sensitivity to SEE and thermal radiation modelling being highlighted. Similarly to limiter tokamak configuration, the ion drag is confirmed to be the main force driving the dust dynamics. However for RFP configurations, the strong contribution of the electric force is demonstrated. The latter plays an important role in the RFP edge plasma due to (i) the large value of the radial electric field and (ii) its sign which is opposite to typical tokamak edge electric fields. A comparison with available experimental data - dust collection in the mid-plane - has been carried out. For this purpose, the dust toroidal transport asymmetry has been evaluated numerically from the computation of the time dependent velocity distribution of an ensemble of many particles launched from the vessel wall. An empirical scaling law for the asymmetry has been found in the high dust inertia regime.

Place, publisher, year, edition, pages
2013.
Series
Arbete och HälsaCESIS Working Paper Series in Economics and Institutions of Innovation
National Category
Fusion, Plasma and Space Physics Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-119999OAI: oai:DiVA.org:kth-119999DiVA: diva2:613216
Educational program
Master of Science in Engineering -Engineering Physics
Uppsok
Technology
Supervisors
Examiners
Available from: 2013-03-26 Created: 2013-03-26 Last updated: 2013-03-26Bibliographically approved

Open Access in DiVA

Banon(6658 kB)362 downloads
File information
File name FULLTEXT01.pdfFile size 6658 kBChecksum SHA-512
917324296ffc63efaaeddf5663b8abee5101bfb281cb57529fe3ac0c217761814e32e008a3c4b67ca77316435466d90cad2ee781dddbbb842be34aa926312afe
Type fulltextMimetype application/pdf

By organisation
Space and Plasma Physics
Fusion, Plasma and Space PhysicsElectrical Engineering, Electronic Engineering, Information Engineering

Search outside of DiVA

GoogleGoogle Scholar
Total: 362 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 606 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf