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- W90468243 abstract "In the reference [E. Zienicke, B.W. Li, A. Thess, A. Krätzschmar, P. Terhoeven, Stability Analysis of the Liquid Metal Pinch Using the Shallow Water Approximation, in Fifth International pamir Conference on Fundamental and Applied MHD, Ramatuelle, France-2002, Vol. 1, p.I-51~I-56], a simple physical model for a cylindrical jet of liquid metal passed through by an axial electrical current is introduced and its corresponding mathematical model based on shallow water approximation is deduced. In this paper, the MHD pinch instability is analyzed and compared with results from reference, and hence to guide the application of MHD pinch in construction of electric current switch. Besides this a pseudo spectral method is used to successfully simulate the time evolution of the pinch process. The numerical calculations showed that the nonlinear phase of the pinch process is very short. It starts approximately with a relative perturbation about 1/10 and needs around 0.2ms for GaInSn with a radius of R0 = 1cm and an overload factor of 10 above the critical current density. The shortness of the nonlinear phase is due to a strong self—acceleration of the pinch. If one wants to use the shortness of the nonlinear pinch phase the geometrical design of the switch has to give an initial narrowing of the current path by at least one tenth of the radius." @default.
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- W90468243 date "2007-01-01" @default.
- W90468243 modified "2023-09-30" @default.
- W90468243 title "Stability and Numerical Simulation of the Liquid Metal Pinch Using the Shallow Water Approximation" @default.
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- W90468243 doi "https://doi.org/10.1007/978-3-540-75995-9_240" @default.
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