= Victor S. L'vov
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<Victor S. L'vov> is a researcher in <theoretical physics> whose work includes <turbulence>, <wave turbulence> and nonlinear <dynamical systems>. His Weizmann Institute of Science research homepage identifies wave and hydrodynamic <turbulence> as central interests.<Research profile of Victor S. L'vov by Weizmann Institute of Science>[Homepage research heading and identified portrait]{ref}
In 1998 he and collaborators introduced an improved <shell model of turbulence> designed to reduce spurious correlations and oscillations between model scales. A <shell model of turbulence> replaces a spatially resolved <velocity field> by amplitudes $u_n$, which are <complex numbers> attached to <wavenumbers> $k_n=k_0\lambda^n$, $\lambda>1$. Nonlinear interactions transfer <energy> between shells, while forcing and <viscosity> supply and dissipate it. With $\lambda=2$, ten shell steps cover a factor of $1024$ in <wavenumber>: a small collection of variables can investigate an <energy cascade> spanning widely separated scales.<Improved shell model of turbulence by Victor S. L'vov and others>[Abstract and §§I–II, model motivation, equation 1 and logarithmic shells]{ref}
This research makes a useful distinction between reproducing scale statistics and reproducing the full spatial geometry of a <turbulent flow>. The paper tests scaling and shell correlations in a deliberately reduced dynamical system; that success does not make it an exact replacement for the <Navier-Stokes equations> in arbitrary apparatus.
\Image[https://www.weizmann.ac.il/chembiophys/lvov/sites/chemphys.lvov/files/styles/pi_photo/public/lvov3_small.jpg?itok=6DAE6tKW]
{title=Victor S. L'vov, portrait identified on his Weizmann Institute of Science research homepage}
{height=240}
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