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Multi-fluid Plasma Modelling

Identification

Public canonical key

doi:10.25911/5d7a29389bb3f

Authors

Dennis, Graham

Reported year

2005

Reported language

und · en_AU

Source type

Thesis (Honours)

First detected

2026-11-09T19:07:42.945268+00:00

Last metadata observation

2026-11-09T19:07:42.945268+00:00

Last HTTP verification

Not checked

Documentary abstract — original language

Contemporary plasma fusion experiments use significant power injection for plasma heating. The injected power selectively heats only part of the plasma, which then transfers its energy to the rest of the plasma through collisions. Continuous power injection gives rise to a dynamic equilibrium whereby part of the plasma has a higher energy than the bulk of the plasma. Current plasma fluid treatments assume that the velocity distribution of each particle species is described by a Maxwell-Boltzmann distribution function, and so may not be accurate for plasmas with a significant energetic component. A new method of modelling toroidally-symmetric plasma equilibria is derived in this thesis: multi-fluid plasma modelling. In this model, the non-Maxwellian plasma is decomposed into an arbitrary number of energy-resolved fluids. Each fluid is charge-neutral, canhave arbitrary rotation, and is described by a Maxwellian distribution function. To investigate the model numerically, it is implemented as a modification to an existing single-fluid plasma equilibrium code. The modified code is then used to investigate the effect of an energetic component on the plasma equilibrium. We find that the influence of the energetic component can be significant if it has large toroidal flow (or flow-shear). The plasma equilibrium is, however, relatively robust to variations in the energetic component’s toroidal flow and pressure profiles.

Identifiers

DOI

10.25911/5d7a29389bb3f

HANDLE

1885/43270

OAI

oai:openresearch-repository.anu.edu.au:1885/43270

Documentary context

Documentary family

Thesis

Source-reported types

Thesis (Honours)

Natural entities mentioned

Species

Entity mentions are not evidence of legal recognition. Jurisdiction studied is separate from author affiliation country.

Sources

Repository · Record 1 · Record 2 · Record 3

• DOI · https://doi.org/10.25911/5d7a29389bb3f
• Handle · https://hdl.handle.net/1885/43270
• Document · https://openresearch-repository.anu.edu.au/bitstreams/8cb143f5-df96-42e5-8393-344642c21454/download

Documentary status

Relevance pending

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