Thanks for the reply,
I just wanted to make sure that whether I implemented it right,
but I still cannot sure whether I am doing correctly..... Let me be with
more specific questions.
First, Yes I am considering 2-dimensional flow.
if I writes a code that looks as previous,
template <int dim>
void
RightHandSide<dim>::vector_value (const Point<dim> &p,
Vector<double> &values) const
{
values(0) = pow(p[0],2);
values(1) = pow(p[1],2);
* values(2) = 0.0; // I assumed this always zero. because f is 2
dimensional force, and we will not have third component of f*.
}
1) whether my interpretation of 'values(2) is correct' - marked with red
line
2) If we considered a vector value test function phi=(*v,*q)= (v_x, v_y ,
q), the right hand side term in weak form should look like this
RHS = (*v, f* ) at domain o mega.
since both *v* and* f* is vector that has two direction , (x and y) , the
calculation should be conducted in both direction
but in the following code, it seems that I am multiplying only the first
component v and f...
Do I understand this appropriately?
In this sense, I don't understand my code well... cuz it looks like...
*const unsigned int component_i =*
* fe.system_to_component_index(i).first; <- Here I only said the first *
*component...*
* local_rhs(i) += fe_values.shape_value(i,q) **
* rhs_values[q](component_i) **
* fe_values.JxW(q);*
Shouldn't this be some thing like this?
*const unsigned int component_i =*
* fe.system_to_component_index(i).first; *
*const unsigned int component_j = *
* fe.system_to_component_index(j).second; *
* local_rhs(i) += (fe_values.shape_value(i,q) **
*rhs_values[q](component_i)) *
*(fe_values.shape_value(i,q) **
*rhs_values[q](component_j)) *
* fe_values.JxW(q);*
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