Hi FU, I think, the first step would be to multiply the entire equation by epsilon/rho. Semi-implicit treatment of the last term might work. That means to evaluate everything within the bracket at old time step n and evaluate the u factor at new time step n+1. Hope that helps.
Chinedu On Sat, Sep 28, 2019, 03:41 FU <fudanyang1...@gmail.com> wrote: > Hi， > I want to solve the problem about Darcy-Brinkman-Forchheimer equations, > but don't know how to discretizate this equation. > > [image: Darcy equation.png] > > This equation has a similar N-S equation. But the discretization of the > last item of the equation and the programming statements are somewhat > unclear. > > > Yours， > > FU > > -- > 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 dealii+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/dealii/4ebf110b-bb82-4aac-885e-bf1f501366dc%40googlegroups.com > <https://groups.google.com/d/msgid/dealii/4ebf110b-bb82-4aac-885e-bf1f501366dc%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- 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 dealii+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/dealii/CAAUzbWNSwhLrVQYDEgqUK46%3DBfs-soqTqx6DDfVhTrSyg-%3DKBg%40mail.gmail.com.
