The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Based on the arc mathematical model for the SF6 circuit breaker (CB), the equations describing the arc chaotic behavior were deduced by considering the velocity and temperature effect in the model as the chaotic characteristics and expending in 2D form using the convergence of Fourier series. The time series, and Lyapunov exponents diagram reflecting the chaotic behavior of arc were obtained based...
For studying the effect of the pressure on the breaking performance during the cold gas interruption of a SF6 circuit breaker (CB), 1D compressive gas flow field mathematical model was deduced by replacing the mass equation with the pressure equation based on the mathematic transformation. And the distribution of Mach number in gas flow field under different opening strokes were simulated using finite...
Based on the N-S and Maxwell equation, a mathematical model describing the arc behavior in SF6 circuit breaker (CB) has been deduced. The effect of Lorentz force, turbulent and physical parameters on the characteristic of arc plasma was considered in the model. Using the finite volume method, the distributions of controlling parameters for arc in SF6 circuit breaker, such as viscosity, electric conductivity,...
The stability and chaotic vibrations of a pipe conveying fluid with both ends fixed, excited by the harmonic motion of its supporting base in a direction normal to the pipe span, were investigated with the aid of modern numerical techniques, involving the phase portrait, Lyapunov exponent and Poincare map etc. The nonlinear differential equations of motion of the system were derived by considering...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.