Re: [deal.II] How to compute convergence rate of L2 norm of error without exact solution? And how to compute convergence rate of in different golobally refinement?

Dear Jean-Paul, Thank you very much for your quick reply! I will read it now! Best, Chucui 在 2019年2月21日星期四 UTC+8下午5:17:17，Jean-Paul Pelteret写道： > > Hi Chucui, > > I can only offer you a very brief reply right now: You might want to look > into the ConvergenceTable >

Re: [deal.II] How to compute convergence rate of L2 norm of error without exact solution? And how to compute convergence rate of in different golobally refinement?

Hi Chucui, I can only offer you a very brief reply right now: You might want to look into the ConvergenceTable class to help you with (1). The introduction to the class directs you to some tutorials that indicate its use

[deal.II] How to compute convergence rate of L2 norm of error without exact solution? And how to compute convergence rate of in different golobally refinement?

Hi all, I have 2 questions of computing convergence rate of L2 norm of error: 1. If I don't have exact solution, does deal.ii have functions to compute convergence rate directly? (Like VectorTools::integrate_difference, which deals with the problem with exact solution ) 2. If I want to c