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Forum: Main CFD Forum

March 18, 2012, 06:57

Replies: 4

Orr Sommerfeld equation

Views: 1,780

Posted By truffaldino

As you said Orr-Sommerfeld is a linear system,...

As you said Orr-Sommerfeld is a linear system, while Navier-Stokes is nonlinear and shows chaotic behavior (turbulence) which is difficult analyse even numerically (DNS is done on supercomputers).
...

Forum: Main CFD Forum

March 18, 2012, 04:27

Replies: 4

Orr Sommerfeld equation

Views: 1,780

Posted By truffaldino

Because Navier-Stokes equation is too complicated...

Because Navier-Stokes equation is too complicated to be solved analytically. This is the main problem of all fluid dynamics. That is why we still know almost nothing exact about turbulence.

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