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CFD analysis of the turbulent flow field and thermal behavior of high-current electric switchgear

DOI: 10.1615/ICHMT.2009.TurbulHeatMassTransf.1880
page 10

B. Kubicek
Austrian Institute of Technology, Department for Energy, Giefinggasse 2, 1210 Vienna

W. Hribernik
Austrian Institute of Technology, Department for Energy, Giefinggasse 2, 1210 Vienna

G. Brauner
Austrian Institute of Technology, Department for Energy, Giefinggasse 2, 1210 Vienna

C. Faltin
Austrian Institute of Technology, Department for Energy, Giefinggasse 2, 1210 Vienna

F. Musai
Austrian Institute of Technology, Department for Energy, Giefinggasse 2, 1210 Vienna

B. Semlitsch
Austrian Institute of Technology, Department for Energy, Giefinggasse 2, 1210 Vienna

Mirza Popovac
Austrian Institute of Technology, Department for Energy, Giefinggasse 2, 1210 Vienna

Resumo

In this paper, the effects of turbulence and radiation modeling are tested to aid low-voltage switchgear type testing according to IEC 60439. Starting from the experimental testing setup, a numerical 3D simulation model is created for the electric heating of the conductors based on the electric skin effect. The airflow results from the inlet fans and the buoyancy at the conductors. Computed temperatures are compared to experimental measurements. A main focus is given on the effects of the numerical turbulence approximations.

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