Numerical Fluid Modelling of the Plasma Edge Response to a 3D Object and Application to Mach Probe Measurements

A. Paredes; E. Serre; F. Schwander; Ph Ghendrih; P. Tamain

doi:10.1002/ctpp.201410028

Numerical Fluid Modelling of the Plasma Edge Response to a 3D Object and Application to Mach Probe Measurements

A. Paredes, E. Serre, F. Schwander, Ph Ghendrih, P. Tamain

Research output: Contribution to journal › Article › peer-review

Abstract

The penalization method Ref. [1] is used to model the interaction of 3D probe with an isothermal plasma. Density maps show that the region perturbed by the obstacle, is not restricted to its near neighbourhood, but can extend to the whole SOL. In the particular case of a probe, which is used to measure local plasma parameters, this impact can lead to violation of assumptions of locality of the perturbation usually used in determining Mach number from the imbalance in density on both sides of the probe.

Original language	English
Pages (from-to)	373-377
Number of pages	5
Journal	Contributions to Plasma Physics
Volume	54
Issue number	4-6
DOIs	https://doi.org/10.1002/ctpp.201410028
State	Published - Jun 2014
Externally published	Yes

Keywords

Edge plasma
Langmuir probe
Penalization
SOL
Transport

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10.1002/ctpp.201410028

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abstract = "The penalization method Ref. [1] is used to model the interaction of 3D probe with an isothermal plasma. Density maps show that the region perturbed by the obstacle, is not restricted to its near neighbourhood, but can extend to the whole SOL. In the particular case of a probe, which is used to measure local plasma parameters, this impact can lead to violation of assumptions of locality of the perturbation usually used in determining Mach number from the imbalance in density on both sides of the probe.",

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AU - Paredes, A.

AU - Serre, E.

AU - Schwander, F.

AU - Ghendrih, Ph

AU - Tamain, P.

PY - 2014/6

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AB - The penalization method Ref. [1] is used to model the interaction of 3D probe with an isothermal plasma. Density maps show that the region perturbed by the obstacle, is not restricted to its near neighbourhood, but can extend to the whole SOL. In the particular case of a probe, which is used to measure local plasma parameters, this impact can lead to violation of assumptions of locality of the perturbation usually used in determining Mach number from the imbalance in density on both sides of the probe.

KW - Edge plasma

KW - Langmuir probe

KW - Penalization

KW - SOL

KW - Transport

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ER -

Numerical Fluid Modelling of the Plasma Edge Response to a 3D Object and Application to Mach Probe Measurements

Abstract

Keywords

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