writeEk.H File Reference

This function evaluates q(k) (McComb, p61) by summing all wavevectors in a k-shell. Then we divide through by the volume of the box. More...

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Namespaces
	Foam
	Namespace for OpenFOAM.

Functions
void	writeEk (const volVectorField &U, const Kmesh &K)

Detailed Description

This function evaluates q(k) (McComb, p61) by summing all wavevectors in a k-shell. Then we divide through by the volume of the box.

Original source file writeEk.H

- to be accurate, by the volume of the ellipsoid enclosing the box (assume cells even in each direction). Finally, multiply the q(k) values by k^2 to give the full power spectrum E(k). Integrating this over the whole range gives the energy in turbulence.

Definition in file writeEk.H.