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Original Articles

Multicomponent iterative method for solving two‐dimensional heat transfer equation on moving grids

Pages 164-174 | Received 30 Sep 1999, Published online: 14 Oct 2010
 

Abstract

A multicomponent iterative method of domain decomposition on adaptive grids for solution of two‐dimensional heat transfer equation is proposed. The adaptive grid is constructed in curvilinear space where Cartesian grid is non‐stationary and depends on the solution behavior. In curvilinear space the initial two‐dimensional heat transfer equation is converted to the system of nonlinear parabolic equations with mixed derivatives, a source and convective transfer.

Darbe nagrinejamas daugiakomponentinis iteracinis metodas, kuriuo sprendžiamas dvimatis šilumos laidumo uždavinys. Naudojamas adaptyvus diskretusis tinklas ir skaičiavimo sritis skaidoma i atskiras nepriklausomas dalis. Adaptyvusis tinklas konstruojamas kreivi‐nese koordinatese ir jis priklauso nuo uždavinio sprendinio. Po transformacijos gaunama netiesiniu skirtumu lygčiu sistema tenkinanti paraboliškumo salyga. Lygtyje atsiranda nariai su mišriomis išvestinemis, konvekcijos nariai ir šilumos šaltiniai. Gautoji lygčiu sistema sprendžiama panaudojant srities skaidymo ir daugiakomponentiniu iteraciniu metodu kombinacija.

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