Abstract
Dynamic and thermal interaction problems involving fluids and solids were studied through a finite volume-based Navier-Stokes solver, combined with immersed-boundary techniques and the net radiation method. Source terms were included in the momentum and energy equations to enforce the non-slip condition and the conjugate boundary condition including the radiative heat exchange. Code validation was performed through the simulation of two cases from the literature: conjugate natural convection in a square cavity with a conducting side wall; and a cubical cavity with conducting walls and a heat source. The accuracy of the methodology and the validation of the inclusion of moving bodies into the simulation was performed via a theoretical case
Highlights
The problem of conjugate heat transfer combined with surface radiative exchange has many industrial applications such as the design of energy efficient buildings, heat-loss analysis of furnaces, cooling of electronic equipment, etc
An immersed-boundary method (IBM) implemented in our in-house code TermoFluids [1] presented in an earlier work [2] was improved to simulate the mentioned phenomena
It is possible to force the non-slip condition for the momentum equation and the conjugate condition for the energy equation
Summary
The problem of conjugate heat transfer combined with surface radiative exchange has many industrial applications such as the design of energy efficient buildings, heat-loss analysis of furnaces, cooling of electronic equipment, etc. An immersed-boundary method (IBM) implemented in our in-house code TermoFluids [1] presented in an earlier work [2] was improved to simulate the mentioned phenomena. This allows to simulate thermal flow problems including moving and/or deforming bodies in static grids. These approaches impose the boundary condition, reconstructing the solution in the vicinity of the bodies. The procedures utilized to reconstruct the solution at the interface of the bodies are described in the following sub-sections
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