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Linear Stability at the Onset of Rotating Convection in the Presence of Magnetic Field
| المصدر: | مجلة العلوم الإنسانية والتطبيقية |
|---|---|
| الناشر: | الجامعة الأسمرية الإسلامية زليتن - كليتى الآداب والعلوم |
| المؤلف الرئيسي: | Laqab, Ibtesam M. (Author) |
| مؤلفين آخرين: | Alogab, Fathia M. (Co-Author) |
| المجلد/العدد: | ع31 |
| محكمة: | نعم |
| الدولة: |
ليبيا |
| التاريخ الميلادي: |
2018
|
| الشهر: | ديسمبر |
| الصفحات: | 40 - 58 |
| رقم MD: | 1260913 |
| نوع المحتوى: | بحوث ومقالات |
| اللغة: | الإنجليزية |
| قواعد المعلومات: | HumanIndex |
| مواضيع: | |
| كلمات المؤلف المفتاحية: |
Chandrasekhar Number Q. | Convection | Rotating Convection | Magnetic Field | Rayleigh Number Ra | Stationary Convectionmber T. | Stability of Convection | Taylor Number T.
|
| رابط المحتوى: |
| المستخلص: |
The phenomena of convection are one of the most interesting problems in fluid dynamics. In this paper we shall study the case of linear stability of a rotating electrically conducting viscous layer heated from below lying in a uniform magnetic field based on the Boussinesq approximation. We restrict our study to the case when the direction of magnetic field and rotation are parallel; the discussion is focused on the case of large Taylor number T and Chandrasekhar number Q. Generally, magnetic field facilitates convection in a rapidly rotating frame breaking the rotational constraints. The numerical solutions for stationary convection showed that at fixed large T and as we increase Q, The critical Rayleigh number RAc stayed fixed until Q reached a special value, then as we increase Q, Rayleigh number continue to decrease reaching its minimum before starting to increase again, two minimum values are determined at large T. A further analysis done on the stationary convection is finding the critical value of Q which give the same critical Rayleigh number at large Taylor number T. |
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