public virtual Vector[] Calculate_ElementNodal_DUDX()
{
double[] Ue = Get_ElementNodal_U();
Vector[] Xi = Interpolator.Calculate_ElementNodal_Xi();
int NNPE = Xi.Length;
Vector[] DUDX = new Vector[NNPE];
for (int i = 0; i < NNPE; i++)
{
DUDX[i] = Interpolator.Interpolate_DerivativeOfVariable_WRTX(Xi[i], Ue, ElementNodes);
}
return(DUDX);
}
public Matrix_Jagged[] Calculate_ElementNodal_DUDX()
{
int NNPE = ElementNodes.Length;
Matrix_Jagged[] DuDX = new Matrix_Jagged[NNPE];
Vector[] Ue = Get_ElementNodal_U(Element_ND.U);
Vector[] Xip = Interpolator.NodeXi;
for (int p = 0; p < NNPE; p++)
{
DuDX[p] = Interpolator.Interpolate_DerivativeOfVariable_WRTX(Xip[p], Ue, ElementNodes);
}
return(DuDX);
}
public virtual Matrix_Jagged Calculate_DUDX(Vector Xi)
{
Vector[] Ue = Get_ElementNodal_U(Element_ND.U);
return(Interpolator.Interpolate_DerivativeOfVariable_WRTX(Xi, Ue, ElementNodes));
}
public virtual Vector Calculate_DUDX(Vector Xi)
{
double[] Ue = Get_ElementNodal_U();
return(Interpolator.Interpolate_DerivativeOfVariable_WRTX(Xi, Ue, ElementNodes));
}