The Propagation and Stability of Hydromagnetic Waves in a Rotating Cylindrical Annulus with Distorted End-Surfaces

I. A. Eltayeb*

*المؤلف المقابل لهذا العمل

نتاج البحث: المساهمة في مجلةمقالمراجعة النظراء

1 اقتباس (Scopus)

ملخص

The linear stability of a differentially heated cylindrical annulus, of finite length, containing a dissipationless fluid and rotating uniformly in a nonuniform toroidal magnetic field is studied. The analysis is restricted to the situation where the instabilities are driven by buoyancy. If the end-surfaces are flat, the unstable waves propagate against the basic flow, i.e. westward. When the effect of slight distortions in the end-surfaces on the propagation speeds of these waves are investigated, it is found that these distortions can decrease or increase the propagation speeds depending on a variety of conditions. The application of these results to Hide's (1969) theory on the effects of bumps on the core-mantle interface of the Earth indicates that these topographical features may lead to irregular fluctuations in the westward drift.

اللغة الأصليةEnglish
الصفحات (من إلى)75-88
عدد الصفحات14
دوريةGeophysical and Astrophysical Fluid Dynamics
مستوى الصوت9
رقم الإصدار1
المعرِّفات الرقمية للأشياء
حالة النشرPublished - يناير 1977
منشور خارجيًانعم

ASJC Scopus subject areas

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  • ???subjectarea.asjc.3100.3103???
  • ???subjectarea.asjc.1900.1908???
  • ???subjectarea.asjc.2200.2211???
  • ???subjectarea.asjc.1900.1906???

بصمة

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