F - Mech Eng,Light,Heat,Weapons – 22 – B
Patent
F - Mech Eng,Light,Heat,Weapons
22
B
F22B 35/00 (2006.01) F22B 35/18 (2006.01) G05B 17/02 (2006.01) G06F 17/50 (2006.01) G06G 5/00 (2006.01) G21C 17/00 (2006.01) G06F 19/00 (2006.01)
Patent
CA 2253658
In a particularly reliable and flexible process for simulating the behaviour of a technical installation in which a medium existing in a plurality of phases (W, D) circulates in a partial region, according to the invention a heat flow (Q fg) and a mass flow (M fg) between two phases (W, D) are detected by means of a linear combination of differences from derivations of the entropy (S f, S g) of the phase concerned (W, D) according to the internal energy (U) or the mass (m m, m g) of the phase concerned. The linear coefficients (L ij) of an equation system derived from the linear combinations form a symmetrical matrix. As an application of irreversible thermodynamics to the simulation process there arise on the one hand representations for the mass and heat flows (M fg, Q fg) as a function of "forces" and on the other relations between the flows (M fg, Q fg) based on the Onsager relation.
L'invention concerne un procédé particulièrement fiable et souple de stimulation du comportement d'une installation technique dans laquelle un milieu présent dans un nombre de phases (W, D) circule dans une zone partielle. Selon ce procédé, un flux thermique (Qfg) et un flux massique (Mfg) entre deux phases (W, D) sont déterminés à l'aide d'une combinaison linéaire de différences de dérivations de l'entropie (Sf, Sg) de chacune des phases (W, D), en fonction de l'énergie intérieure (U) ou de la masse (mm, mg) de chacune des phases (W, D). Les coefficients linéaires (Lij) d'un système d'équations dérivé des combinaisons linéaires forment une matrice symétrique. L'application de la thermodynamique irréversible au procédé de stimulation permet d'obtenir d'une part des représentations pour les flux massique et thermique (Mfg, Qfg) en fonction des "forces" et d'autre part des relations entre les flux (Mfg, Qfg) sur la base du théorème d'Onsager.
Aktiengesellschaft Siemens
Areva Np Gmbh
Fetherstonhaugh & Co.
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