3D MHD Equilibrium and Stability |
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Principal InvestigatorHenry GardnerDepartment of Computer Science, Faculty of Engineering and Information Technology |
For some decades there has been an international
scientific and engineering program to study the |
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Co-InvestigatorsSally LloydDepartment of Theoretical Physics Robert DewarDepartment of Theoretical Physics, Research School of Physical Sciences and Engineering David SingletonANUSF |
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Projectsk12 - VPP |
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What are the results to date and the future of the work?Much of 1998 was spent studying the long-term convergence of the HINT code and analysing the effects of longitudinal currents in the plasma on the equilibrium characteristics. It turns out that the flat "rotational transform" profile of H-1NF makes it very susceptible to small longitudinal currents and considerable effort needs to be made to determine whether these are real effects or not. On the answer to this question, could hinge the determination or otherwise of island "self-healing" in H-1NF. |
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- Appendix A |
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What computational techniques are used?The HINT code, developed by T. Hayashi, is used as the basis of this study. This code solves time-dependent, resistive MHD equations on a specially-shaped coordinate grid. Relaxation along field lines is much slower than perpendicular to them and is treated using a special interpolation algorithm which has been developed as part of this project (pressure is averaged along field-lines and interpolated back to the fixed grid). PublicationsS. S. Lloyd, H. J. Gardner, T. Hayashi and S. R. Hudson, Self Healing of Magnetic Islands in a Heliac, J. Plasma Fusion Res. SERIES, 1, 484 (1998). |
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Appendix A - |
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