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Scaling of Lyapunov Exponents in Homogeneous Isotropic Turbulence
Prakash Mohan, Nicholas Fitzsimmons, Robert D. Moser
Lyapunov exponents measure the average exponential growth rate of typical linear perturbations in a chaotic system, and the inverse of the largest exponent is a measure of the time…
Extreme-scale motions in turbulent plane Couette flows
Myoungkyu Lee, Robert D. Moser
We study the size of large-scale motions in turbulent plane Couette flows at moderate Reynolds number up to = 500. Direct numerical simulation domains were as large as $100π…
A Temporal Slow Growth Formulation for Direct Numerical Simulation of Compressible Wall--Bounded Flows
Victor Topalian, Todd A. Oliver, Rhys Ulerich +1
A new slow growth formulation for DNS of wall-bounded turbulent flow is developed and demonstrated to enable extension of slow growth modeling concepts to complex boundary layer fl…