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Article: Research findings from Peking University update understanding of fluids engineering.
- Article from:
- Journal of Technology
- Article date:
- March 24, 2009
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"We report an investigation or inverse energy cascade in steady-state two-dimensional turbulence by direct numerical simulation (DNS) of the two-dimensional Navier-Stokes equation, with small-scale forcing and large-scale damping. We employed several types of damping and dissipation mechanisms in simulations up to 2048(2) resolution," scientists in Beijing, People's Republic of China report.
"For all these simulations we obtained a wavenumber range for which the mean spectral energy flux is a negative constant and the energy spectrum scales as k (5/3), consistent with the predictions of Kraichnan (Phys. Fluids, vol. 439, 1967, p. 1417). To gain further insight, ...