Controlling shear flow generation in a transport model

N. Daniels; A. S. Ware; B. Fetscher; D. E. Newman; C. Hidalgo; M. A. Pedrosa

Controlling shear flow generation in a transport model

N. Daniels, A. S. Ware, B. Fetscher, D. E. Newman, C. Hidalgo, M. A. Pedrosa

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

A one-dimensional transport model is used to study edge poloidal shear flow generation during gas puffing experiments and hysteresis effects in the generation of this flow. Above a critical threshold the shear flow improves confinement by reducing turbulent transport. For subcritical flows (i.e., flows that do not trigger transition to a higher confinement regime), there is no true hysteresisin theflow. An apparent lag may be observed if the rateof ramping the particle source is rapid relative to transport time scales. Initial work on critical flows is also presented.

Original language	English
Title of host publication	34th EPS Conference on Plasma Physics 2007, EPS 2007 - Europhysics Conference Abstracts
Pages	1342-1345
Number of pages	4
Edition	2
State	Published - 2007
Event	34th European Physical Society Conference on Plasma Physics 2007, EPS 2007 - Warsaw, Poland Duration: Jul 2 2007 → Jul 6 2007

Publication series

Name	34th EPS Conference on Plasma Physics 2007, EPS 2007 - Europhysics Conference Abstracts
Number	2
Volume	31

Conference

Conference	34th European Physical Society Conference on Plasma Physics 2007, EPS 2007
Country/Territory	Poland
City	Warsaw
Period	07/2/07 → 07/6/07

Cite this

Daniels, N., Ware, A. S., Fetscher, B., Newman, D. E., Hidalgo, C., & Pedrosa, M. A. (2007). Controlling shear flow generation in a transport model. In 34th EPS Conference on Plasma Physics 2007, EPS 2007 - Europhysics Conference Abstracts (2 ed., pp. 1342-1345). (34th EPS Conference on Plasma Physics 2007, EPS 2007 - Europhysics Conference Abstracts; Vol. 31, No. 2).

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title = "Controlling shear flow generation in a transport model",

abstract = "A one-dimensional transport model is used to study edge poloidal shear flow generation during gas puffing experiments and hysteresis effects in the generation of this flow. Above a critical threshold the shear flow improves confinement by reducing turbulent transport. For subcritical flows (i.e., flows that do not trigger transition to a higher confinement regime), there is no true hysteresisin theflow. An apparent lag may be observed if the rateof ramping the particle source is rapid relative to transport time scales. Initial work on critical flows is also presented.",

author = "N. Daniels and Ware, {A. S.} and B. Fetscher and Newman, {D. E.} and C. Hidalgo and Pedrosa, {M. A.}",

year = "2007",

language = "English",

isbn = "9781622763344",

series = "34th EPS Conference on Plasma Physics 2007, EPS 2007 - Europhysics Conference Abstracts",

number = "2",

pages = "1342--1345",

booktitle = "34th EPS Conference on Plasma Physics 2007, EPS 2007 - Europhysics Conference Abstracts",

edition = "2",

note = "34th European Physical Society Conference on Plasma Physics 2007, EPS 2007 ; Conference date: 02-07-2007 Through 06-07-2007",

}

Daniels, N, Ware, AS, Fetscher, B, Newman, DE, Hidalgo, C & Pedrosa, MA 2007, Controlling shear flow generation in a transport model. in 34th EPS Conference on Plasma Physics 2007, EPS 2007 - Europhysics Conference Abstracts. 2 edn, 34th EPS Conference on Plasma Physics 2007, EPS 2007 - Europhysics Conference Abstracts, no. 2, vol. 31, pp. 1342-1345, 34th European Physical Society Conference on Plasma Physics 2007, EPS 2007, Warsaw, Poland, 07/2/07.

Controlling shear flow generation in a transport model. / Daniels, N.; Ware, A. S.; Fetscher, B. et al.
34th EPS Conference on Plasma Physics 2007, EPS 2007 - Europhysics Conference Abstracts. 2. ed. 2007. p. 1342-1345 (34th EPS Conference on Plasma Physics 2007, EPS 2007 - Europhysics Conference Abstracts; Vol. 31, No. 2).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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T1 - Controlling shear flow generation in a transport model

AU - Daniels, N.

AU - Ware, A. S.

AU - Fetscher, B.

AU - Newman, D. E.

AU - Hidalgo, C.

AU - Pedrosa, M. A.

PY - 2007

Y1 - 2007

N2 - A one-dimensional transport model is used to study edge poloidal shear flow generation during gas puffing experiments and hysteresis effects in the generation of this flow. Above a critical threshold the shear flow improves confinement by reducing turbulent transport. For subcritical flows (i.e., flows that do not trigger transition to a higher confinement regime), there is no true hysteresisin theflow. An apparent lag may be observed if the rateof ramping the particle source is rapid relative to transport time scales. Initial work on critical flows is also presented.

AB - A one-dimensional transport model is used to study edge poloidal shear flow generation during gas puffing experiments and hysteresis effects in the generation of this flow. Above a critical threshold the shear flow improves confinement by reducing turbulent transport. For subcritical flows (i.e., flows that do not trigger transition to a higher confinement regime), there is no true hysteresisin theflow. An apparent lag may be observed if the rateof ramping the particle source is rapid relative to transport time scales. Initial work on critical flows is also presented.

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M3 - Conference contribution

AN - SCOPUS:84873802878

SN - 9781622763344

T3 - 34th EPS Conference on Plasma Physics 2007, EPS 2007 - Europhysics Conference Abstracts

SP - 1342

EP - 1345

BT - 34th EPS Conference on Plasma Physics 2007, EPS 2007 - Europhysics Conference Abstracts

T2 - 34th European Physical Society Conference on Plasma Physics 2007, EPS 2007

Y2 - 2 July 2007 through 6 July 2007

ER -

Controlling shear flow generation in a transport model

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