[deal.II] Accessing nodal values of a FEM solution

2020-07-19 Thread Xuefeng Li
Hi, there! I have some general questions about deal.ii, and here is the background info concerning my question. There are two functions u and v, defined over domain \Omega in 1D/2D/3D. We use deal.ii to solve for the numerical approximation of function u, using 1st degree polynomial for

Re: [deal.II] Accessing nodal values of a FEM solution

2020-07-19 Thread Wolfgang Bangerth
On 7/19/20 6:28 PM, Daniel Arndt wrote: The tutorial examples show only how to access values of the solution at the quadrature points within each cell. https://github.com/dealii/dealii/wiki/Frequently-Asked-Questions#how-to-get-the-mapped-position-of-support-points-of-my-element

Re: [deal.II] Accessing nodal values of a FEM solution

2020-07-19 Thread Daniel Arndt
Is it possible to access nodal point values of a solution in deal.ii? And > is it possible to revise nodal values of a solution pointwise? > Yes, of course, the elements of your solution vector correspond to degrees of freedoms which are nodal values in your case. You simply access them (both for

[deal.II] Denis Davydov stepping down as Principal Developer

2020-07-19 Thread Wolfgang Bangerth
All, Denis Davydov, who has been one of the Principal Developers of deal.II since 2015, has decided to step down from this role after leaving academia last year. I would like to take the opportunities to say a few words about him. Denis is an applied mathematician with a focus on mechanics