ZHANG Hui, FAN Bao-chun, CHEN Zhi-hua. Evolution of Global Enstrophy in Cylinder Wake Controlled by Lorentz Force[J]. Applied Mathematics and Mechanics, 2008, 29(11): 1365-1375.
Citation: ZHANG Hui, FAN Bao-chun, CHEN Zhi-hua. Evolution of Global Enstrophy in Cylinder Wake Controlled by Lorentz Force[J]. Applied Mathematics and Mechanics, 2008, 29(11): 1365-1375.

Evolution of Global Enstrophy in Cylinder Wake Controlled by Lorentz Force

  • Received Date: 2007-10-12
  • Rev Recd Date: 2008-10-08
  • Publish Date: 2008-11-15
  • The Okubo-Weiss function is correlated with the fluid particle compression, deformation and vorticity, which provides a simple way to characterize the different regions of flowfield. It had been proved mathematically that the global integration of Okubo-Weiss function is always equal to zero for a two dimensional incompressible flow with no-slip boundaries. Moreover, as an example to validate above conclusion, the flow past a circular cylinder controlled by electromagnetic force was calculated numerically. The distributions of global enstrophy, total squared strain and Okubo-Weiss function in controlled flowfield were discussed, and the influences of Lorentz force on them were also analyzed.
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