Some questions concerning the development and implementation of software designed for the numerical solution of coupled thermal analysis problems are considered. The thermal load transfer between computational modules, a formulation of boundary conditions on the fluid--solid interface, and the implementation of some additional capabilities to save computer time are discussed. The numerical results obtained for the temperature distribution in a free rotating disk and for the metal and fluid temperature fields inside a cavity bounded by stationary and rotational disks are compared with experimental data and with the theoretical dependencies.

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