Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.
Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.
Fixed time steps
Posted 02.04.2013, 07:08 GMT-4 Fluid & Heat, Computational Fluid Dynamics (CFD), Results & Visualization, Studies & Solvers Version 4.3a 1 Reply
Please login with a confirmed email address before reporting spam
While simulating our case, we have used strict time step with maximum as 1800 seconds. But still, it is taking a time step of 0.1 sometimes. This is making our simulation quite slow during the middle of simulation. As per our observation, we found the process of simulation with good time steps at the beginning but it is taking smaller steps as the simulation is going on.
Is there any way to maintain standard time steps throughout the simulation process??
Can I know how to have smaller time steps at the beginning and fixed time steps after some 500 or 600 time steps in COMSOL??
Is there any way to maintain standard time steps throughout the simulation process??
Can I know how to have smaller time steps at the beginning and fixed time steps after some 500 or 600 time steps in COMSOL??
1 Reply Last Post 02.04.2013, 09:13 GMT-4
Please login with a confirmed email address before reporting spam
Posted:
1 decade ago
One way to set up different time steps is shown in the model 'cylinder_flow'. But actually you cold specify one-by-one the time steps simply writing down the values.
Comsol decides the smallest time steps taken by the solver... The user manual has clear explanations about that ;-)
Comsol decides the smallest time steps taken by the solver... The user manual has clear explanations about that ;-)