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Forum: Main CFD Forum

February 8, 2021, 15:37

Replies: 4

Relaxation factor in transient problems

Views: 902

Posted By FMDenaro

No, the CN scheme is second order accurate, is...

No, the CN scheme is second order accurate, is not a third order scheme.
You can easily see the local truncation error of the scheme by applying the trapezoidal rule to the time integral:

Int...

Forum: Main CFD Forum

February 5, 2021, 12:28

Replies: 4

Relaxation factor in transient problems

Views: 902

Posted By FMDenaro

If I understand, this form is generally related...

If I understand, this form is generally related to an implicit class of time integration, for theta=1/2 the well known Crank-Nicolson time integration resulting in the scheme. It is a second order...

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