Frequency power spectra of global quantities in magnetoconvection

Sandip Das; Krishna Kumar

doi:10.3390/fluids6040163

Frequency power spectra of global quantities in magnetoconvection

Fluid Dynamics 2022-05-13 v2

Authors: Sandip Das , Krishna Kumar

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Abstract

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.

Keywords

magnetoconvection power spectral density rayleigh-bénard convection kinetic energy heat flux scaling exponent

Cite

@article{arxiv.2103.04834,
  title  = {Frequency power spectra of global quantities in magnetoconvection},
  author = {Sandip Das and Krishna Kumar},
  journal= {arXiv preprint arXiv:2103.04834},
  year   = {2022}
}

Comments

5 pages, 3 figures

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