Is there an economic way to extract the Lyapunov coefficient from LES?

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Arnaud Dupeyron

Can you just tell me what does LES mean?

Martin Lopez de Bertodano

It is a Smagorinsky-LES model of a small plume 10 cm x 2 cm x 30 cm. The mesh size is 1 mm. The plume goes back and forth. I ran it for 40 s to get fully developed turbulence and then 40 s more to extract statistics. It predicts data quite wall.

Excellent. It looks efficient!

Can you just explain if we can use your method and tell us for what kind of movement?

Ms. Latifi

by using the finite time Lyapunov exponents (FTLE) method, in order to save computational time, smaller sections of the domain should be chosen.

M. S., I will look into that. Thank you.