Influence of Heat Exchange with Environment on the Results of Heat Transfer Simulations in Periodic Surface Structures
R. Dyja, E. Gawronska
Czestochowa University of Technology, 42-201 Czestochowa, Poland
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The presented paper focuses on a problem of heat transfer in periodic surface structures. The periodic structure surfaces are the compound structures described by mathematical formulas that represent areas similar to porous structures. The interest in them surged recently due to increased possibilities of their production using additive manufacturing technology. Elements designed with the use of periodic surface structures seem to have such advantages as decreased weight or good general mechanical properties. The most famous example of the periodic surface structure is gyroid. The main goal of this paper is to evaluate the impact of convective heat transfer on the temperature distribution in periodic surface structures. There are some papers with numerical simulations on this topic but they usually exclude heat exchange with the environment. The simulations of heat transfer in the periodic structure surfaces are important because of the high energy flux required for additive manufacturing to work properly. Importantly, high energy flux results in large temperature gradients that can affect the quality of the obtained part in properties like porosity or residual stresses. The heat transfer simulations in this paper are conducted by solving the heat transfer equation accompanied by the proper boundary conditions using our authorial software, which implements solution obtained by the finite element method together with the task of generation of the periodic surface structure domain.

DOI:10.12693/APhysPolA.142.44
topics: FEM, heat transfer, periodic surface structure, numerical simulation