Sharp bounds on enstrophy growth in the viscous Burgers equation
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Bibliographic record
Abstract
We use the Cole–Hopf transformation and the Laplace method for the heat equation to justify the numerical results on enstrophy growth in the viscous Burgers equation on the unit circle. We show that the maximum enstrophy achieved in the time evolution is scaled as , where is the large initial enstrophy, whereas the time needed for reaching the maximal enstrophy is scaled as . These bounds are sharp for initial conditions given by odd C 3 functions that are convex on half-period.
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|---|---|---|
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