In this paper, global bifurcations and chaotic dynamics under bounded noise perturbation for the nonlinear normalized radial electric field near plasma are investigated using the Melnikov method. From this analysis, we get criteria that could be useful for designing the model parameters so that the appearance of chaos could be induced (when heating particles) or run out for quiescent H-mode appearance. For this purpose, we use a test of chaos to verify our prediction. We find that, chaos could be enhanced by noise amplitude growing. The results of numerical simulations also reveal that noise intensity modifies the attractor size through power spectra, correlation function, and Poincaré map. The criterion from the Melnikov method which is used to analytically predict the existence of chaotic behavior of the normalized radial electric field in plasma could be a valid tool for predicting harmful parameters values involved in experiment on Tokamak L–H transition.
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October 2013
Research-Article
Global Bifurcations of Mean Electric Field in Plasma L–H Transition Under External Bounded Noise Excitation
C. Nono Dueyou Buckjohn,
C. Nono Dueyou Buckjohn
Ph.D Student
e-mail: bucknono@yahoo.fr
e-mail: bucknono@yahoo.fr
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M. Siewe Siewe,
M. Siewe Siewe
1
Senior Lecturer
e-mail: martinsiewesiewe@yahoo.fr
e-mail: martinsiewesiewe@yahoo.fr
1Corresponding author.
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C. Tchawoua,
T. C. Kofane
T. C. Kofane
Professor
e-mail: tckofane@yahoo.com
Département de Physique,
Faculté des Sciences,
Université de Yaoundé I,
e-mail: tckofane@yahoo.com
Laboratoire de Mécanique,
Département de Physique,
Faculté des Sciences,
Université de Yaoundé I,
BP 812, Yaoundé, Cameroun
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C. Nono Dueyou Buckjohn
Ph.D Student
e-mail: bucknono@yahoo.fr
e-mail: bucknono@yahoo.fr
M. Siewe Siewe
Senior Lecturer
e-mail: martinsiewesiewe@yahoo.fr
e-mail: martinsiewesiewe@yahoo.fr
C. Tchawoua
Associate Professor
e-mail: ctchawa@yahoo.fr
e-mail: ctchawa@yahoo.fr
T. C. Kofane
Professor
e-mail: tckofane@yahoo.com
Département de Physique,
Faculté des Sciences,
Université de Yaoundé I,
e-mail: tckofane@yahoo.com
Laboratoire de Mécanique,
Département de Physique,
Faculté des Sciences,
Université de Yaoundé I,
BP 812, Yaoundé, Cameroun
1Corresponding author.
Contributed by the Design Engineering Division of ASME for publication in the Journal of Computational and Nonlinear Dynamics. Manuscript received May 22, 2012; final manuscript received February 23, 2013; published online May 31, 2013. Assoc. Editor: Stefano Lenci.
J. Comput. Nonlinear Dynam. Oct 2013, 8(4): 041011 (18 pages)
Published Online: May 31, 2013
Article history
Received:
May 22, 2012
Revision Received:
February 23, 2013
Citation
Nono Dueyou Buckjohn, C., Siewe Siewe, M., Tchawoua, C., and Kofane, T. C. (May 31, 2013). "Global Bifurcations of Mean Electric Field in Plasma L–H Transition Under External Bounded Noise Excitation." ASME. J. Comput. Nonlinear Dynam. October 2013; 8(4): 041011. https://doi.org/10.1115/1.4024025
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