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Tham khảo tài liệu 'hydrodynamics advanced topics part 14', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 376 Hydrodynamics - Advanced Topics 6. Summary The physical processes of electrical explosion of metallic foil and magnetically driven quasi-isentropic compression are very complex. This chapter dicusses these problem simply from the aspect of one dimensionally magnetohydrodyamics. The key variable of electrical resistivity was simplified which is very improtant. Especially for the problem of magnetically driven quasi-isentropic compression only the resistivity is considered before the vaporazation point of the matter. In fact the phase states of the loading surface vary from solid to liquid gas and plasma when the loading current density becomes more and more. In order to optimize the structural shapes of electrodes and the suitable sizes of samples and windows in the experiments of magnetically driven quasi-isentropic compression two dimensionally magnetohydrodynamic simulations are necessary. The applications of the techniques of electrical explosion of metallic foil and magnetically driven quasi-isentropic compression are various and the word of versatile tools can be used to describe them. In this chapter only some applications are presented. More applications are being done by US such as the quasi-isentropic compression experiments of un-reacted solid explosives the researches of hypervelocity impact phenomena and shock Hugoniot of materials at highly loading strain rates of 105 107l s. 7. Acknowledgements The authors of this chapter would like to acknowledge Prof chengwei Sun and Dr. Full Tan Ms. Jia He Mr. Jianjun Mo and Mr. Gang Wu for the good work and assistance in our simulation and expeimental work. We would also like to express our thanks to the referee for providing invaluable and useful suggestions of cousre the work is supported National Natural Science Foundation of China under Contract NO. 10927201 and N0.11002130 and the Science Foundation of CAEP under Contract NO. 2010A0201006 and NO. 2011A0101001. 8. References 1 Keller D. V. and Penning R. .
