Hello everyone, i need help because, i am begineer in Freefem++

There are someone can help me, how i can programming this term

a|u|^{\alpha}u

where |u| is the norm on the unknown function

|u| = sqrt(ux^² + uy)

Thank you

Hello everyone, i need help because, i am begineer in Freefem++

There are someone can help me, how i can programming this term

a|u|^{\alpha}u

where |u| is the norm on the unknown function

|u| = sqrt(ux^² + uy)

Thank you

The L_2 norm of a vector u is defined as |u| = (\int_{\Omega} u*u d{\Omega))^{1/2}.

You can calculate it as follows (I assume that you are working in finite element space and

have a mesh on your domain in 2D).

|u| = sqrt(int2d(Th)(u*u))

Cheers

Thank you so much,

yes, i work in Finite Element space and the domain 2D.