Matches in SemOpenAlex for { <https://semopenalex.org/work/W101520035> ?p ?o ?g. }
Showing items 1 to 79 of
79
with 100 items per page.
- W101520035 abstract "In order to understand the mechanisms of anomalous transport due to micro-instabilities and transport barrier formation related to generation of sheared plasma flows, we have studied transport regimes of ion-temperature gradient (ITG)-driven turbulence using a low degree-of-freedom model composed of 18 ODEs [1]. When the system is close to the threshold of ITG instability, an L-H-like transition and periodic oscillations are observed in the kinetic energy and convective flux fluctuations. As the ion temperature gradient ‘Ki’ is increased further, the system bifurcates to turbulent regimes. In the strongly turbulent regime, intermittent bursts (so-called avalanches) are observed, which contrasts with the report that no such intermittency was observed in simulations of the previously proposed low degree-of-freedom model based on 11 ODEs [2]. This intermittency is caused by the competition of the following 3 factors; (1) generation of sheared flows due to nonlinear coupling among higher harmonics and suppression of ITG turbulence by the sheared flows, (2) gradual reduction of the sheared flows due to viscosity, and (3) rapid re-growth of ITG modes due to the reduction of stabilizing effects by the sheared flows. We also obtained a scaling law between time average of the Nusselt number and the ion pressure gradient Ki. The obtained scaling law shows that, in the case of large Ki where sheared flows become dominant and intermittency occurs, the Nusselt number is significantly lower than its value that we would expect if it were not for intermittency. We have demonstrated that essential nonlinear behaviour of the ITG turbulence can be at least qualitatively accounted for by nonlinear interaction of several low order harmonics. **deceased" @default.
- W101520035 created "2016-06-24" @default.
- W101520035 creator A5007470613 @default.
- W101520035 creator A5030131384 @default.
- W101520035 creator A5062087838 @default.
- W101520035 creator A5074765078 @default.
- W101520035 creator A5090138355 @default.
- W101520035 date "2002-01-01" @default.
- W101520035 modified "2023-09-27" @default.
- W101520035 title "Intermittent oscillations generated by ITG-driven turbulence" @default.
- W101520035 hasPublicationYear "2002" @default.
- W101520035 type Work @default.
- W101520035 sameAs 101520035 @default.
- W101520035 citedByCount "0" @default.
- W101520035 crossrefType "journal-article" @default.
- W101520035 hasAuthorship W101520035A5007470613 @default.
- W101520035 hasAuthorship W101520035A5030131384 @default.
- W101520035 hasAuthorship W101520035A5062087838 @default.
- W101520035 hasAuthorship W101520035A5074765078 @default.
- W101520035 hasAuthorship W101520035A5090138355 @default.
- W101520035 hasConcept C10899652 @default.
- W101520035 hasConcept C121332964 @default.
- W101520035 hasConcept C130230704 @default.
- W101520035 hasConcept C15476950 @default.
- W101520035 hasConcept C182748727 @default.
- W101520035 hasConcept C196558001 @default.
- W101520035 hasConcept C207821765 @default.
- W101520035 hasConcept C2524010 @default.
- W101520035 hasConcept C2780388094 @default.
- W101520035 hasConcept C2781065038 @default.
- W101520035 hasConcept C31532427 @default.
- W101520035 hasConcept C33923547 @default.
- W101520035 hasConcept C57879066 @default.
- W101520035 hasConcept C62520636 @default.
- W101520035 hasConcept C82706917 @default.
- W101520035 hasConcept C99844830 @default.
- W101520035 hasConceptScore W101520035C10899652 @default.
- W101520035 hasConceptScore W101520035C121332964 @default.
- W101520035 hasConceptScore W101520035C130230704 @default.
- W101520035 hasConceptScore W101520035C15476950 @default.
- W101520035 hasConceptScore W101520035C182748727 @default.
- W101520035 hasConceptScore W101520035C196558001 @default.
- W101520035 hasConceptScore W101520035C207821765 @default.
- W101520035 hasConceptScore W101520035C2524010 @default.
- W101520035 hasConceptScore W101520035C2780388094 @default.
- W101520035 hasConceptScore W101520035C2781065038 @default.
- W101520035 hasConceptScore W101520035C31532427 @default.
- W101520035 hasConceptScore W101520035C33923547 @default.
- W101520035 hasConceptScore W101520035C57879066 @default.
- W101520035 hasConceptScore W101520035C62520636 @default.
- W101520035 hasConceptScore W101520035C82706917 @default.
- W101520035 hasConceptScore W101520035C99844830 @default.
- W101520035 hasLocation W1015200351 @default.
- W101520035 hasOpenAccess W101520035 @default.
- W101520035 hasPrimaryLocation W1015200351 @default.
- W101520035 hasRelatedWork W1588520619 @default.
- W101520035 hasRelatedWork W1988901790 @default.
- W101520035 hasRelatedWork W1991082074 @default.
- W101520035 hasRelatedWork W1997585854 @default.
- W101520035 hasRelatedWork W2024047262 @default.
- W101520035 hasRelatedWork W2033528025 @default.
- W101520035 hasRelatedWork W2046280835 @default.
- W101520035 hasRelatedWork W2058815830 @default.
- W101520035 hasRelatedWork W2059867265 @default.
- W101520035 hasRelatedWork W2066443896 @default.
- W101520035 hasRelatedWork W2080996429 @default.
- W101520035 hasRelatedWork W2085453241 @default.
- W101520035 hasRelatedWork W2089819489 @default.
- W101520035 hasRelatedWork W2111890312 @default.
- W101520035 hasRelatedWork W2221450485 @default.
- W101520035 hasRelatedWork W2278192982 @default.
- W101520035 hasRelatedWork W2515631945 @default.
- W101520035 hasRelatedWork W3158233658 @default.
- W101520035 hasRelatedWork W3197677109 @default.
- W101520035 hasRelatedWork W1981180223 @default.
- W101520035 isParatext "false" @default.
- W101520035 isRetracted "false" @default.
- W101520035 magId "101520035" @default.
- W101520035 workType "article" @default.