Preconditioner for non linear mass matrix
2 visualizaciones (últimos 30 días)
Mostrar comentarios más antiguos
I have to solve an ODE system of the form:
M(y,t)*dydt = F(y,t)
The problem is, that it is very ill conditioned. I used the incomplete cholesky technique as a preconditioner for the system
M*dydt = F(y,t)
which worked very well! Now the problem is that I want to use the same technique for the space and time dependent matrix
M(y,t)
This takes very long to calculate this in advance because I need the inverse and power of the Matrix C:
C = RR^T
Is there a possibility to speed up this preconditioning or is there a faster approach?
0 comentarios
Respuestas (1)
felix svoboda
el 15 de Jul. de 2019
Hey did you ever managed to solve this issue?
I am facing this very problem... it is taking ages :(
1 comentario
John D'Errico
el 15 de Jul. de 2019
Please don't answer a question with just another question, or a "me too" response. Learn to use comments.
Ver también
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!