bfc

February 16, 2005, 14:04

hi all,

I'm using a bfc that i imported from geogrid. The problem is that the flow is changing direction with the slope of the grid. how do i prevent this? thanks

March 10, 2005, 18:18

1/ Make a simple but representative grid with similar slope. Make this using the PHOENICS BFC not gridgeo and set up to run a flow across the grid, does the problem happen then?

If its not that there is something wrong with your grid then perhaps its false diffusional effects or something you could try some higher order schemes. But its more likely something is wrong with the setup or grid?

February 16, 2005, 14:04	bfc	#1
joe Guest Posts: n/a	hi all, I'm using a bfc that i imported from geogrid. The problem is that the flow is changing direction with the slope of the grid. how do i prevent this? thanks

March 10, 2005, 18:18	Re: bfc	#2
Kevin McManus Guest Posts: n/a	1/ Make a simple but representative grid with similar slope. Make this using the PHOENICS BFC not gridgeo and set up to run a flow across the grid, does the problem happen then? If its not that there is something wrong with your grid then perhaps its false diffusional effects or something you could try some higher order schemes. But its more likely something is wrong with the setup or grid?