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JOURNALS // Vestnik TVGU. Seriya: Prikladnaya Matematika [Herald of Tver State University. Series: Applied Mathematics] // Archive

Vestnik TVGU. Ser. Prikl. Matem. [Herald of Tver State University. Ser. Appl. Math.], 2010, Issue 16, Pages 75–86 (Mi vtpmk290)

Numerical Calculations Models for Physical-Mechanical Systems

Configurations of rotating magnetic Newtonian polytropics with small index

S. A. Miheeva, I. V. Puzyninb, V. P. Tsvetkova

a Tver State University, Tver
b Joint Institute for Nuclear Research, Dubna

Abstract: In this article we was shown and the realized symbol-numerical algorithm for the decision the equations of equilibrium rotating Newtonian polytropics with the small index $n$. The analytical kind of a new class is found nonellipsoidal configurations of Newtonian polytropics — the limiting wedge-shaped figures having the form of a circular wedge near to equator. Are calculated values of the principal curvatures of the surface of a configuration near to equator. We found of class of limiting points $e_{L}(n)$. For asymmetry parameter $X$ the cubic equation and on its basis is received the class of critical points (bifurcations points) is defined. Existence of the first limiting critical point is proved with value $n_{m}=0.1161$.

Keywords: Newtonian polytropic, limiting wedge-shaped figures, principal curvatures.

UDC: 519.6,517.9

Received: 27.10.2009
Revised: 20.01.2010



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