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Simulation Calculation and Wind Tunnel Test of Static Aerodynamic Parameters of High-speed Railway Contact Line
Pages: 33-38
Year: Issue:  5
Journal: Journal of the China Railway Society

Keyword:  high-speed railway contact linestatic aerodynamic parametersnumerical computationwind tunnel test;
Abstract: The static aerodynamic parameters of high-speed railway contact lines include the drag coefficient,lift coefficient and torque coefficient and they are the important parameters to analyze the phenomena of vibrations, dancing movements,etc of the contact lines in the air.In this paper,the computational fluid dynamics (CCFD) model of high-speed railway contact lines was established and the flow field around the contact wires was simu-lated with the large-eddy simulation method.The aerodynamic coefficients of the contact lines were calculated, the dominant frequency of vortex shedding was analyzed by spectrum analysis of the lift coefficient.The flow a-round the lines demonstrated obvious three dimensional characteristics of airflow interaction in the three dimen-sional space.Beside numerical simulation,wind tunnel tests of three coefficients of contact lines were carried out.The simulation results and wind tunnel test data were compared to verify the effectiveness of the simula-tion model and experimental data and to lay foundation for further simulation and engineering researches.
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