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Forum: Main CFD Forum

February 19, 2012, 05:08

Replies: 3

A question about vortex stretching

Views: 1,282

Posted By FMDenaro

if div v=0, div (vv) = v.div v = grad (|v|^2/2) +...

if div v=0, div (vv) = v.div v = grad (|v|^2/2) + (curl v) ^ v

then curl [(curl v) ^ v], owing to a well known tensor identity, opens in further terms, one of those is the stretching term

Forum: Main CFD Forum

February 18, 2012, 16:52

Replies: 3

A question about vortex stretching

Views: 1,282

Posted By FMDenaro

you just have to take curl of each term of the...

you just have to take curl of each term of the momentum equation, then the curl of the non linear term produces one of the parts which is the stretching term. You just need to work carefully on curl...

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