Question: “What happens for as you vary cell width?”
Dissipation rate of a set of equilibria as a function of the spanwise wavenumber.
Equilibrium solutions are robust: they persist for ranges of spanwise and streamwise wavenumbers
(inverse cell sizes).
For a fixed Re
solutions have preferred wavelengths fixed by the global wall-to-wall separation and boundary shear layer wall units.
For small cell sizes equilibria exist only for ranges of cell widths.