Matches in SemOpenAlex for { <https://semopenalex.org/work/W2605426567> ?p ?o ?g. }
- W2605426567 endingPage "114003" @default.
- W2605426567 startingPage "114003" @default.
- W2605426567 abstract "We investigate the effect of varying the ion temperature gradient (ITG) and toroidal equilibrium scale sheared flow on ion-scale turbulence in the outer core of MAST by means of local gyrokinetic simulations. We show that nonlinear simulations reproduce the experimental ion heat flux and that the experimentally measured values of the ITG and the flow shear lie close to the turbulence threshold. We demonstrate that the system is subcritical in the presence of flow shear, i.e., the system is formally stable to small perturbations, but transitions to a turbulent state given a large enough initial perturbation. We propose that the transition to subcritical turbulence occurs via an intermediate state dominated by low number of coherent long-lived structures, close to threshold, which increase in number as the system is taken away from the threshold into the more strongly turbulent regime, until they fill the domain and a more conventional turbulence emerges. We show that the properties of turbulence are effectively functions of the distance to threshold, as quantified by the ion heat flux. We make quantitative comparisons of correlation lengths, times, and amplitudes between our simulations and experimental measurements using the MAST BES diagnostic. We find reasonable agreement of the correlation properties, most notably of the correlation time, for which significant discrepancies were found in previous numerical studies of MAST turbulence." @default.
- W2605426567 created "2017-04-28" @default.
- W2605426567 creator A5004309274 @default.
- W2605426567 creator A5038742385 @default.
- W2605426567 creator A5045220529 @default.
- W2605426567 creator A5063720259 @default.
- W2605426567 creator A5064333742 @default.
- W2605426567 creator A5071473120 @default.
- W2605426567 creator A5088326011 @default.
- W2605426567 date "2017-09-18" @default.
- W2605426567 modified "2023-10-14" @default.
- W2605426567 title "Ion-scale turbulence in MAST: anomalous transport, subcritical transitions, and comparison to BES measurements" @default.
- W2605426567 cites W1522266384 @default.
- W2605426567 cites W1614042661 @default.
- W2605426567 cites W1964351883 @default.
- W2605426567 cites W1964706589 @default.
- W2605426567 cites W1964812496 @default.
- W2605426567 cites W1965959308 @default.
- W2605426567 cites W1968930234 @default.
- W2605426567 cites W1972589815 @default.
- W2605426567 cites W1973442344 @default.
- W2605426567 cites W1973674351 @default.
- W2605426567 cites W1973951280 @default.
- W2605426567 cites W1975189348 @default.
- W2605426567 cites W1975428756 @default.
- W2605426567 cites W1981053372 @default.
- W2605426567 cites W1981969898 @default.
- W2605426567 cites W1982052187 @default.
- W2605426567 cites W1984115427 @default.
- W2605426567 cites W1985682406 @default.
- W2605426567 cites W1985686327 @default.
- W2605426567 cites W1991032852 @default.
- W2605426567 cites W1991082074 @default.
- W2605426567 cites W1993270493 @default.
- W2605426567 cites W1996182315 @default.
- W2605426567 cites W1996385119 @default.
- W2605426567 cites W1996633787 @default.
- W2605426567 cites W2003777246 @default.
- W2605426567 cites W2004227903 @default.
- W2605426567 cites W2004434804 @default.
- W2605426567 cites W2006189827 @default.
- W2605426567 cites W2011785101 @default.
- W2605426567 cites W2014152723 @default.
- W2605426567 cites W2015159529 @default.
- W2605426567 cites W2026320868 @default.
- W2605426567 cites W2026449125 @default.
- W2605426567 cites W2027499548 @default.
- W2605426567 cites W2033072435 @default.
- W2605426567 cites W2038516800 @default.
- W2605426567 cites W2039034117 @default.
- W2605426567 cites W2044190591 @default.
- W2605426567 cites W2047839530 @default.
- W2605426567 cites W2049211052 @default.
- W2605426567 cites W2053155959 @default.
- W2605426567 cites W2059201819 @default.
- W2605426567 cites W2062552488 @default.
- W2605426567 cites W2063107517 @default.
- W2605426567 cites W2064295704 @default.
- W2605426567 cites W2067606265 @default.
- W2605426567 cites W2071786361 @default.
- W2605426567 cites W2073570965 @default.
- W2605426567 cites W2075582087 @default.
- W2605426567 cites W2075672097 @default.
- W2605426567 cites W2079544785 @default.
- W2605426567 cites W2081848303 @default.
- W2605426567 cites W2081965316 @default.
- W2605426567 cites W2084057852 @default.
- W2605426567 cites W2084573469 @default.
- W2605426567 cites W2087391435 @default.
- W2605426567 cites W2089607555 @default.
- W2605426567 cites W2113759627 @default.
- W2605426567 cites W2122602427 @default.
- W2605426567 cites W2124149128 @default.
- W2605426567 cites W2125439056 @default.
- W2605426567 cites W2137187191 @default.
- W2605426567 cites W2140734476 @default.
- W2605426567 cites W2143354397 @default.
- W2605426567 cites W2149361417 @default.
- W2605426567 cites W2150787345 @default.
- W2605426567 cites W2153705768 @default.
- W2605426567 cites W2154257168 @default.
- W2605426567 cites W2158424124 @default.
- W2605426567 cites W2164333572 @default.
- W2605426567 cites W2171536225 @default.
- W2605426567 cites W2199212310 @default.
- W2605426567 cites W2341990669 @default.
- W2605426567 cites W2494346055 @default.
- W2605426567 cites W265155201 @default.
- W2605426567 cites W3098311797 @default.
- W2605426567 cites W3101686532 @default.
- W2605426567 cites W3102760241 @default.
- W2605426567 cites W3103402079 @default.
- W2605426567 cites W3104464310 @default.
- W2605426567 cites W3105338295 @default.
- W2605426567 cites W3105505249 @default.
- W2605426567 cites W3105597355 @default.
- W2605426567 cites W3106448798 @default.
- W2605426567 doi "https://doi.org/10.1088/1361-6587/aa8484" @default.