I am trying to deduce the x,y components of variable in comsol i dont know how to give the notations in comsol vx,vy give x,y gradient components of variable v its vector
so actually in one physics module i calculated the velocity V but for another physics module of the same program i want to use x and y components of v
Hi Vamsy,
is your variable a vector or a scalar? Can you provide some more information or just a mini example?
Best regards,
Antoni Artinov
Hi Vamsy,
It is a good question and the answer depends on whether your variable is built-in or you just predefined it in 'Variables list';
-If the variable is built-in then you need to check which notation is used for this variable and its components, found in 'Dependent variables' under each module node.
-If you defined the variable as you mentioned, v, then vx and vy in general will give you the gradient of the variable with respect to x and y, respectively. Instead, you can use v*nx and v*ny to evaluate the components of v in x and y directions in terms of the normal vector n.
Hope that helps
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