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بین المللی علوم (منتشر نمی شود)
مقاله 10، دوره 5، شماره 0 - شماره پیاپی 1371، اردیبهشت 1383 اصل مقاله (159.93 K)
نویسندگان
A. Rajabtabar؛ P. Havvaie^*
عنوان مقاله [English]
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چکیده [English]
We adopt the general theory of Non-equilibrium thermodynamics to the two-fluid Model of He-II. In this Model superfluid is considered as a fluid of two-components each of with its own density and velocity fields. In contrast to the earlier works, our model assumes that super-fluid carries small entropy ( ), owing to the Fliessbach. Since the fluid has two independent velocity fields, there is no preferred frame of references and hence, no unique definition of internal energy. The explicit forms of this quantity are worked out in different models and compared with our definition of internal energy and Gibbs function. The existing relation and unification together with the equivalency of London and Landau’s theories is also introduced
کلیدواژه‌ها [English]
Chemical reaction, Internal convection, Lagrangian Density, Superfluid Helium, Two-fluid model

آمار تعداد مشاهده مقاله: 696 تعداد دریافت فایل اصل مقاله: 538

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