Dear Dr.Bangerth, I found it just before, it is on the page of FEValuesView ( https://www.dealii.org/current/doxygen/deal.II/classFEValuesViews_1_1Vector.html). Thank you very much! Best regards, Yuesu
On Mon, Sep 7, 2020 at 11:00 PM Wolfgang Bangerth <[email protected]> wrote: > On 9/7/20 6:21 PM, yuesu jin wrote: > > I want to contract the gradient tensor with another vector, such as > > T_ij*n_j, the gradient tensor is d_j u_i (d is the partial differential > > operator). I am wondering what is the first index of gradient tensor, i > or j? > > I believe it is > T_ij = d_j u_i > I know I documented this somewhere (maybe in FEValues::gradient() or > FEValuesView::Vector::gradient) but if you can't find it, it would be nice > if > you could just try out and maybe suggest a place where this should be > documented. > > Best > W. > > > -- > ------------------------------------------------------------------------ > Wolfgang Bangerth email: [email protected] > www: http://www.math.colostate.edu/~bangerth/ > > -- > The deal.II project is located at http://www.dealii.org/ > For mailing list/forum options, see > https://groups.google.com/d/forum/dealii?hl=en > --- > You received this message because you are subscribed to the Google Groups > "deal.II User Group" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/dealii/5074e87b-889e-5c44-77e6-62fcfc1be1da%40colostate.edu > . > -- Yuesu Jin, Ph.D student, University of Houston, College of Natural Sciences and Mathematics, Department of Earth and Atmospheric Sciences, Houston, Texas 77204-5008 346-404-2062 -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/dealii/CA%2B25a%3DJEeEiEste4WpypYWqBfZ1MEbckLs3W-2trQYz7gSPyBA%40mail.gmail.com.
