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MHD equilibrium: Difference between revisions
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It should be noted that the force balance equation does not describe any detail on scales smaller than the gyroradius. In combination with the existence of stochastic field regions this means that the concept of flux surface can only be approximate and not exact. | It should be noted that the force balance equation does not describe any detail on scales smaller than the gyroradius. In combination with the existence of stochastic field regions this means that the concept of flux surface can only be approximate and not exact. | ||
Furthermore, the force balance equation depends on a number of assumptions, such as that of static equilibrium, whereas fusion-grade plasmas are clearly strongly driven systems far | Furthermore, the force balance equation depends on a number of assumptions, such as that of static equilibrium, whereas fusion-grade plasmas are clearly strongly driven systems far from equilibrium. | ||
Nevertheless, ideal MHD equilibrium is extremely useful for the description and understanding of magnetically confined plasmas. | Nevertheless, ideal MHD equilibrium is extremely useful for the description and understanding of magnetically confined plasmas. | ||