Narodna in univerzitetna knjižnica, Ljubljana (NUK)
Naročanje gradiva za izposojo na dom
Naročanje gradiva za izposojo v čitalnice
Naročanje kopij člankov
Urnik dostave gradiva z oznako DS v signaturi
  • Effect of asymmetry on the steady thermal convection in a vertical torus filled with a porous medium
    Adrian, Postelnicu ; Nicoleta, Scurtu
    The paper deals with a study on the thermal convection in a fluid saturated porous medium confined in a vertical oriented toroidalloop heated from below and cooled from above, subjected to a ... vertically uniform temperature gradient.In fact, Sano, O., Journal ofthe Physical Society of Japan (1987 and 1988) studied such a configuration for clear fluids. We take the steady heat conduction stateunder a constant vertical temperature gradient (-k) as a fundamental solution. A cylindrical system of co-ordinates (r, f, s) is considered for the loop of 2pR length and cross sectional diameter 2a, where the ratio a/R is assumed to be very small. We expand allquantities in terms ofdouble Fourier series in f and q, where q = s/R. First-order perturbed fields from steady heat conduction stateare examined and various plots are given: isotherms in ring and meridian plane, stream lines and velocities. Finally, an attempt ismade in order to identify other fundamental solutions: S-type (cellular thermal convection) and A-types (coaxial flow, bidirectional flow and antisymmetric cellular flow).
    Vir: Strojniški vestnik = Journal of mechanical engineering. - ISSN 0039-2480 (Letn. 51, št. 7/8, 2005, str. 501-508)
    Vrsta gradiva - članek, sestavni del
    Leto - 2005
    Jezik - angleški
    COBISS.SI-ID - 8677659

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    Digitalna knjižnica Slovenije - dLib.si

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