Quantitative estimation of effective viscosity in quantum turbulence
Quantitative estimation of effective viscosity in quantum turbulence
We study freely decaying quantum turbulence by performing high-resolution numerical simulations of the Gross-Pitaevskii equation (GPE) in the Taylor-Green geometry. We use resolutions ranging from ${1024}^{3}$ to ${4096}^{3}$ grid points. The energy spectrum confirms the presence of both a Kolmogorov scaling range for scales larger than the intervortex scale $\ensuremath{\ell}$, …