Modification of favorable average curvature effect by changing parallel sound wave behavior in tokamak plasmas
| العنوان: | Modification of favorable average curvature effect by changing parallel sound wave behavior in tokamak plasmas |
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| المؤلفون: | Yueqiang Liu, Xue Bai, Guangzhou Hao |
| المصدر: | Nuclear Fusion. 61:066016 |
| بيانات النشر: | IOP Publishing, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Physics, Nuclear and High Energy Physics, Tokamak, Physics::Plasma Physics, law, Plasma, Condensed Matter Physics, Curvature, Sound wave, law.invention, Computational physics |
| الوصف: | The favorable average curvature effect, also known as the GGJ effect (Glasser et al 1975 Phys. Fluids 18 875), is intrinsically associated with parallel sound wave propagation in a tokamak plasma. This work investigates how the GGJ effect is modified by changing the parallel sound wave behavior. Two physics models beyond the standard single fluid theory, i.e. an anisotropic thermal transport model and a parallel sound wave damping model, are employed to change parallel sound waves in a toroidal plasma, and the consequence on the GGJ effect is demonstrated for two important classes of problems, i.e. the resistive plasma response to the applied resonant magnetic perturbation and the stability of the tearing mode. Toroidal modeling reveals that the GGJ effect is significantly altered by both of the aforementioned physics effects. Compared to the thermal transport physics, which completely removes the GGJ effect, the sound wave damping effect only offers partial mitigation. The differences between these two models are further illustrated in terms of the radial structure of the shielding current and the eigenfunction of the tearing instability. In particular, a fundamental reason for complete suppression of the GGJ effect by the thermal transport is identified as an extra toroidal coupling of the poloidal harmonics. |
| تدمد: | 1741-4326 0029-5515 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::3d3eb4428e539669e4fb882b7cbd4fd8 https://doi.org/10.1088/1741-4326/abf2e3 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........3d3eb4428e539669e4fb882b7cbd4fd8 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 17414326 00295515 |
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