Universal critical behavior of the transition to turbulence in channel flow (INVITED)

Abstract eng:
We identified critical behavior of the transition to turbulence in channel flow. Turbulent domains continuously injected from an inlet ultimately decayed, or in contrast, spread depending on flow rates. Near a transition point, critical behavior was observed. We found that four critical exponents, a universal scaling function and a scaling relation, are all in agreement with the (2+1)-dimensional directed percolation universality class.

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