Test-field method for mean-field coefficients withMHD background

  title={Test-field method for mean-field coefficients withMHD background},
  author={Matthias Rheinhardt and Axel Brandenburg},
Aims. The test-field method for computing turbulent transport coefficients from simulations of hydromagnetic flows is extended to the regime with a magnetohydrodynamic (MHD) background. Methods. A generalized set of test equations is derived using both the induction equation and a modified momentum equation. By employing an additional set of auxiliary equations, we derive linear equations describing the response of the system to a set of prescribed test fields. Purely magnetic and MHD… CONTINUE READING


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