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Subgrid modeling for magnetohydrodynamic (MHD) turbulent shear flows is studied with the aid of a statistical result from a multiscale direct-interaction theory. The ensemble-mean MHD correlation function is combined with a filtering procedure to give a subgrid-scale MHD stress. This result leads to a subgrid model of Smagorinsky type, which is applicable to large eddy simulations of earth’s magnetic dynamo and reversed-field pinches of plasma.
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Akira Yoshizawa (1987) studied this question.
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