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I am working on implementation of AMR for my finite volume code. Let me use a 2-D mesh to describe my question. Starting with SINGLE initial cell (let the mesh...
Asked on 06/21/2021 by Freewill
1 answerMy question is around the efficiency of AMG. In which case AMG can perform better,as solver or as a preconditioner(for example a Krylov space method as CG)? Assume the case...
Asked on 06/20/2021
1 answerIs there a way to have an estimate of the error propagated on an ode numerical solution by the error of the initial conditions? I suppose this depend on the...
Asked on 06/20/2021 by Zebx
1 answerI have a set of points $(x_i,y_i,u(x_i,y_i))inmathbb{R}^3$, $i=1,dots N$, over a surface $S$ (from experimental data). I need to calculate the integral of a function $F$...
Asked on 06/20/2021
2 answerI was wondering if anyone could enlighten me about the convergence properties of the truncated newton method in case of a non-positive definite hessian $nabla^2 f = H$. From...
Asked on 06/19/2021 by RockedSalad121
0 answerFor those familiar with more of these tools than I am, what are the pros and cons of the various tools available? Right now I exclusively use Tecplot for CFD...
Asked on 06/18/2021 by Aurelius
2 answerI have a simple Matlab script which aims to compute $k$ singular values of a matrix $A$. $A$ is a random dense square matrix of size...
Asked on 06/17/2021 by davewy
1 answerI am playing with Galerkin Least-Squares stabilization to solve advection diffusion problem in the context of the finite element method. This works very well for steady-state advection-diffusion equation, even in...
Asked on 06/17/2021 by BlaB
0 answerI am trying out odeint and received the error'Excess work done on this call (perhaps wrong Dfun type).'.The values returned are also super sensitive to small changes of the initial...
Asked on 06/13/2021 by b-dog
1 answerI am a mechanical engineer working in the field of aerospace structures. During the course of my studies, I have studied a course on structural analysis in which I learned...
Asked on 06/12/2021
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