دورية أكاديمية

Stability of the 3D MHD equations without vertical dissipation near an equilibrium

التفاصيل البيبلوغرافية
العنوان: Stability of the 3D MHD equations without vertical dissipation near an equilibrium
المؤلفون: Ruihong Ji, Liya Jiang, Wen Luo
المصدر: AIMS Mathematics, Vol 8, Iss 5, Pp 12143-12167 (2023)
بيانات النشر: AIMS Press, 2023.
سنة النشر: 2023
المجموعة: LCC:Mathematics
مصطلحات موضوعية: magnetohydrodynamic equations, background magnetic field, partial dissipation, stability, Mathematics, QA1-939
الوصف: Important progress has been made on the standard Laplacian case with mixed partial dissipation and diffusion. The stability problem of the 3D incompressible magnetohydrodynamic (MHD) equations without vertical dissipation but with the fractional velocity dissipation $ (-\Delta)^\alpha u $ and magnetic diffusion $ (-\Delta)^\beta b $ is unfortunately not often well understood for many ranges of fractional powers. This paper discovers that there are new phenomena with the case $ \alpha, \beta \leq 1 $. We establish that, if an initial datum ($ u_0, b_0 $) in the Sobolev space $ H^3(\mathbb{R}^3) $ is close enough to the equilibrium state, and we replace the terms $ (-\Delta)^\alpha u $ and $ (-\Delta)^\beta b $ by $ (-\Delta_h)^\alpha u $ and $ (-\Delta_h)^\beta b $, respectively, the resulting equations with $ \alpha, \beta \in(\frac{1}{2}, 1] $ then always lead to a steady solution, where $ \Delta_h = \partial_{x_1}^2+\partial_{x_2}^2 $.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 2473-6988
Relation: https://doaj.org/toc/2473-6988
DOI: 10.3934/math.2023612?viewType=HTML
DOI: 10.3934/math.2023612
URL الوصول: https://doaj.org/article/f3cada2fd0a045f3887ad71cb0ce1c14
رقم الأكسشن: edsdoj.f3cada2fd0a045f3887ad71cb0ce1c14
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:24736988
DOI:10.3934/math.2023612?viewType=HTML