A galloping analysis method for an elastically supported cylinder under wake flow considering kinetic aerodynamic forces
A technology of elastic support and analysis method, applied in the field of simulation analysis, can solve the problem of insufficient induced vibration and so on
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[0085] Simpson first predicted the amplitude of the transmission line by the Runge-Kutta method, and used a simple approximate analytical function without considering the aerodynamic damping to conduct a preliminary nonlinear study of the wake galloping vibration. In the 1980s, Allnutt et al. used linear theory to predict the existence of a limit cycle centered on a dynamic equilibrium position, and expressed the limit cycle as a sine function. After that, Price obtained the spatial distribution of the average lift-drag coefficient of the transmission conductor under the wake through wind tunnel tests, and used a quasi-steady method including aerodynamic higher-order terms to represent the aerodynamic force of the downstream conductor, and established a wake galloping theoretical model to study Wake gallop.
[0086] The present invention will first simulate the lift-drag coefficient of the downstream cylinder under a specific spacing ratio, and obtain the load of the wire move...
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