Frequency power spectra of global quantities in magnetoconvection

8 Mar 2021  ·  Sandip Das, Krishna Kumar ·

We present the results of direct numerical simulations of power spectral densities for kinetic energy, convective entropy and heat flux for unsteady Rayleigh-B\'{e}nard magnetoconvection in the frequency space. For larger values of frequency, the power spectral densities for all the global quantities vary with frequency $f$ as $f^{-2}$... The scaling exponent is independent of Rayleigh number, Chandrasekhar's number and thermal Prandtl number. read more

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Fluid Dynamics