Search found 2 matches

by Landonky
Tue Dec 13, 2011 11:44 pm
Forum: ROMS Problems
Topic: Lengthwise instabilities in velocity leading to blow-up
Replies: 1
Views: 2196

Re: Lengthwise instabilities in velocity leading to blow-up

The problem was that I was forcing the inflow with a depth uniform velocity U=( Q(t) / A ). This was causing problems at the bottom and edges of my channel. To get around this I created a deep entrance to allow for slower velocities and blended it into the actual bathymetry.
by Landonky
Wed Sep 28, 2011 8:07 pm
Forum: ROMS Problems
Topic: Lengthwise instabilities in velocity leading to blow-up
Replies: 1
Views: 2196

Lengthwise instabilities in velocity leading to blow-up

I am currently experimenting with ROMS on rivers, this means I'm likely running ROMS with on smaller time and length scales than are typically used. This river has a mean depth around 5m, and a damn regulated flow around 200 m 3 /s. I define v_south/north by dividing Q by the cross-sectional area. I ...