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Showing results 1 to 6 of 6 Search took 0.00 seconds. Search: Posts Made By: ghorrocks

Forum: CFX May 23, 2019, 18:41

Replies: 27 Water materials - pressure Views: 1,763 Posted By ghorrocks Be careful here - if your fluid has density a... Be careful here - if your fluid has density a function of temperature but not of pressure it will not behave as you expect. You should make the density a function of pressure as well.

Forum: CFX May 23, 2019, 07:23

Replies: 27 Water materials - pressure Views: 1,763 Posted By ghorrocks That one is obvious - surely you know what is... That one is obvious - surely you know what is happening there. It appears your NASA polynomials fluid is constant density. So in a sealed chamber the pressure will never change. The IAWPS fluid...

Forum: CFX May 22, 2019, 19:01

Replies: 27 Water materials - pressure Views: 1,763 Posted By ghorrocks That depends on your system, how it is... That depends on your system, how it is reinforced, how it operates and so on. But assuming it is pretty much just a sealed chamber - then model the chamber in FEA with the pressures you expect....

Forum: CFX May 22, 2019, 03:49

Replies: 27 Water materials - pressure Views: 1,763 Posted By ghorrocks So the thermal situation is not simple - it has... So the thermal situation is not simple - it has some undefined heat input and a coolant water system, so the temperature will be a function of all that. And yes you should work out how much the...

Forum: CFX May 21, 2019, 18:53

Replies: 27 Water materials - pressure Views: 1,763 Posted By ghorrocks If you are modelling a sealed cavity with liquid... If you are modelling a sealed cavity with liquid water then as you heat it you will get a very rapid rise in pressure, this is the expected physics. In real life the container is going to deform and...

Forum: CFX May 21, 2019, 17:37

Replies: 27 Water materials - pressure Views: 1,763 Posted By ghorrocks Your problem is probably not in the material... Your problem is probably not in the material properties, but in the way you set the simulation up or the numerical stability it has. For your setup, you need to think very carefully about what the...

Showing results 1 to 6 of 6

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