Stead-state FE mesh size limitation?

A discussion forum for users of the new HYDRUS 2D/3D. HYDRUS is a software package for simulating water, heat and solute movement in two- and three-dimensional variably saturated media. Happy Posting!
Post Reply
StevenH
Posts: 1
Joined: Wed Jul 15, 2015 5:29 pm
Location: USA

Stead-state FE mesh size limitation?

Post by StevenH » Wed Jul 15, 2015 8:24 pm

Hello,
I am having an issue with running a simple 2D steady-state simulation of a fully saturated domain. The models is of a valley with a hill slope on either side and measures approximately 650m wide and 300m high. The lateral and bottom boundaries are no-flow and the top is constant saturation equal to porosity. The model runs fine with a coarse FE mesh of 4m or greater, but fails to converge if the mesh is reduced to 3m or smaller. I believe a finer mesh should allow for easier convergence; do you know why this is not the case?

Post Reply