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Search: Posts Made By: ghorrocks
Forum: CFX October 25, 2012, 07:15
Replies: 10
Views: 1,915
Posted By ghorrocks
By "using an inlet at the inlet and an outlet at...

By "using an inlet at the inlet and an outlet at the outlet" I mean use inlets and outlets, not openings. Openings allow backflow and that can be numerically difficult. Inlets and outlets do not...
Forum: CFX October 24, 2012, 07:00
Replies: 10
Views: 1,915
Posted By ghorrocks
At the moment I think both the inlet and outlet...

At the moment I think both the inlet and outlet are problems. But I suspect the outlet will settle down in time, but the inlet needs a fundamental rethink.

I realise you don't care about the flow...
Forum: CFX October 24, 2012, 06:32
Replies: 10
Views: 1,915
Posted By ghorrocks
Typically this is done by extending the BC...

Typically this is done by extending the BC upstream or downstream to where the flow is simpler. In this case I would consider extending the inlet upstream to where it is only gas entering. Then the...
Forum: CFX October 23, 2012, 19:52
Replies: 10
Views: 1,915
Posted By ghorrocks
I do not think this geometry simplifies the...

I do not think this geometry simplifies the simulation and that is the cause of the problem. Your end boundary conditions have the particles falling parallel to the BC, and the flow going in and out....
Forum: CFX October 22, 2012, 18:45
Replies: 10
Views: 1,915
Posted By ghorrocks
Can you post an image of your geometry and what...

Can you post an image of your geometry and what the flow looks like when you get back flow? Also an image of what you expect the flow to be would be good.
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