1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
2D divertor heat flux distribution using a 3D heat conduction solver in National Spherical Torus Experiment
Rent:
Rent this article for
USD
10.1063/1.4792595
/content/aip/journal/rsi/84/2/10.1063/1.4792595
http://aip.metastore.ingenta.com/content/aip/journal/rsi/84/2/10.1063/1.4792595
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) A photograph of NSTX lower divertor with the IR camera field of view indicated as a red shadowed region and (b) Plasma equilibrium and layout of the IR diagnostic.

Image of FIG. 2.
FIG. 2.

(a) 2D temperature distribution after an ELM, (b) 2D divertor heat flux distribution calculated from (a) using the original version of TACO (no consideration of thin surface layer effect), and (c) 1D heat flux profile along the red radial line indicated in (b).

Image of FIG. 3.
FIG. 3.

Comparison of the result between TACO and THEODOR for the same radial line and 60 000 (W m−2 K−1) α value; (a) Comparison of temporal evolution of peak heat flux and (b) Comparison of radial heat flux profiles at an ELM peak.

Image of FIG. 4.
FIG. 4.

The 2D heat flux distribution with 60 000 (W m−2 K−1) α value. Some of the tile gaps are indicated with arrows.

Image of FIG. 5.
FIG. 5.

Energy deposition calculated from the data by the IR camera, with different α values during and after the discharge.

Image of FIG. 6.
FIG. 6.

Striated heat flux distribution at the divertor surface, (a) 2D heat flux distribution on the divertor surface with individual striations (from the ELM filaments) visible and (b) A 1D heat flux distribution along the red radial line indicated in (a).

Image of FIG. 7.
FIG. 7.

(a) Temporal evolution of measured mean peak heat flux ( ) during a type-I ELMy H-mode, (b) Toroidal degree of asymmetry for qpeak, ɛDA (qpeak), (c) Toroidal ɛDAq) as a function of , and (d) Relation between ɛDAq) and ɛDA (qpeak). Data for each of the 1/3 of the ELM cycle have been colored green, sky blue, and gold, respectively.

Image of FIG. 8.
FIG. 8.

Comparison of ELM energy deposition onto the outer divertor target, from the IR camera measurement to the ELM energy loss from the fast diamagnetic measurement. These data points use α = 40 000 W m−2 K−1.

Loading

Article metrics loading...

/content/aip/journal/rsi/84/2/10.1063/1.4792595
2013-02-21
2014-04-24
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: 2D divertor heat flux distribution using a 3D heat conduction solver in National Spherical Torus Experiment
http://aip.metastore.ingenta.com/content/aip/journal/rsi/84/2/10.1063/1.4792595
10.1063/1.4792595
SEARCH_EXPAND_ITEM