engleski

The Numerical Modelling of Experimental Device for Measuring Thermal Conductivity of Metals

In order to identify the operating parameters of experimental device for measuring thermal conductivity of metals, the numerical modelling approach has been applied. The numerical modelling is performed by implementing the finite element method for transient heat flow and employing the Python programming language. The test specimens for measuring thermal conductivity of metals were cylindrical in shape. The heat transfer of interest considers the conduction through test specimen and thermal insulation, and the convection to surrounding air and cooling water. Radiative heat transfer was neglected due to the specific design of experimental device and the temperature levels achieved between the forehead of test specimen and cooling water. Number of numerical simulations have been performed in order to analyse the effect of two different metals (steel and copper) on thermal conductivity values. Furthermore, the analysis included the power of heat source (warm forehead) and the intensity of heat transfer from the specimen cold forehead (heat sink). The presented numerical analysis produced valuable data that will play important role in defining the final concept and design of the experimental device for measuring thermal conductivity of metals.

thermal conductivity, finite element method, Python programming

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