Abstract
Nonlinear simulation of plasma blob propagation in the tokamak scrape-off layer is reported. Three types of model equations are introduced and the simulation results are compared. It is found that in the parameter regime where the interchange instability appears during the propagation process, the theoretical model of propagation velocity determined by the initial blob size provides a good approximation of the simulation results. In the regime where the Kelvin-Helmholtz instability appears, however, the blob velocity saturates at a lower value.
| Original language | English |
|---|---|
| Article number | 040 |
| Journal | Plasma and Fusion Research |
| Volume | 3 |
| DOIs | |
| Publication status | Published - Jan 1 2008 |
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All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
Cite this
Propagation velocity analysis of a single blob in the SOL. / Sugita, Satoru; Yagi, Masatoshi; Itoh, Sanae I.; Itoh, Kimitaka.
In: Plasma and Fusion Research, Vol. 3, 040, 01.01.2008.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Propagation velocity analysis of a single blob in the SOL
AU - Sugita, Satoru
AU - Yagi, Masatoshi
AU - Itoh, Sanae I.
AU - Itoh, Kimitaka
PY - 2008/1/1
Y1 - 2008/1/1
N2 - Nonlinear simulation of plasma blob propagation in the tokamak scrape-off layer is reported. Three types of model equations are introduced and the simulation results are compared. It is found that in the parameter regime where the interchange instability appears during the propagation process, the theoretical model of propagation velocity determined by the initial blob size provides a good approximation of the simulation results. In the regime where the Kelvin-Helmholtz instability appears, however, the blob velocity saturates at a lower value.
AB - Nonlinear simulation of plasma blob propagation in the tokamak scrape-off layer is reported. Three types of model equations are introduced and the simulation results are compared. It is found that in the parameter regime where the interchange instability appears during the propagation process, the theoretical model of propagation velocity determined by the initial blob size provides a good approximation of the simulation results. In the regime where the Kelvin-Helmholtz instability appears, however, the blob velocity saturates at a lower value.
UR - http://www.scopus.com/inward/record.url?scp=77951444473&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77951444473&partnerID=8YFLogxK
U2 - 10.1585/pfr.3.040
DO - 10.1585/pfr.3.040
M3 - Article
AN - SCOPUS:77951444473
VL - 3
JO - Plasma and Fusion Research
JF - Plasma and Fusion Research
SN - 1880-6821
M1 - 040
ER -