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Showing results 1 to 10 of 10 Search took 0.00 seconds. Search: Posts Made By: ghorrocks

Forum: CFX May 10, 2012, 23:59

Replies: 19 Ansys tutorial Views: 3,381 Posted By ghorrocks Use the Fluent forum for questions on Fluent. ... Use the Fluent forum for questions on Fluent. These are pretty basic questions you are asking - surely you know how to determine if the flow is developing in time or not.

Forum: CFX May 8, 2012, 21:23

Replies: 19 Ansys tutorial Views: 3,381 Posted By ghorrocks Flow development occurs both in space and time -... Flow development occurs both in space and time - the boundary layer needs to grow even for a steady state flow as the flow progresses along the pipe. So work out the pipe lenght required to get...

Forum: CFX May 7, 2012, 17:14

Replies: 19 Ansys tutorial Views: 3,381 Posted By ghorrocks Have you done a 1D pipe flow analysis to estimate... Have you done a 1D pipe flow analysis to estimate how long the flow development is likely to be?

Forum: CFX May 6, 2012, 20:20

Replies: 19 Ansys tutorial Views: 3,381 Posted By ghorrocks Just let the flow develop over a longer pipe. Just let the flow develop over a longer pipe.

Forum: CFX May 1, 2012, 19:18

Replies: 19 Ansys tutorial Views: 3,381 Posted By ghorrocks Have a look at the flow at the inlet and the flow... Have a look at the flow at the inlet and the flow as it develops. See if you can work out why the centre line accelerates.

Forum: CFX April 29, 2012, 19:10

Replies: 19 Ansys tutorial Views: 3,381 Posted By ghorrocks It is simple conservation of volume. No need for... It is simple conservation of volume. No need for a reference, a few lines of maths proves it.

Forum: CFX April 29, 2012, 07:00

Replies: 19 Ansys tutorial Views: 3,381 Posted By ghorrocks Your flow is incompressible, so it appears the... Your flow is incompressible, so it appears the cause of the effect is development of the boundary layer causing acceleration of the core flow. So this answers your question, doesn't it?

Forum: CFX April 27, 2012, 06:33

Replies: 19 Ansys tutorial Views: 3,381 Posted By ghorrocks You have not described what you are doing so I... You have not described what you are doing so I cannot help you. As I already said, this effect can be due to the boundary layer forming cuasing the centre line velocity to accelerate, or it could be...

Forum: CFX April 26, 2012, 18:37

Replies: 19 Ansys tutorial Views: 3,381 Posted By ghorrocks This effect is probably real - compressible flows... This effect is probably real - compressible flows accelerate along a duct due to the fluid density decreasing, all flows (incompressible and incompressible) have the centre line velocity accelerate...

Forum: CFX April 25, 2012, 07:44

Replies: 19 Ansys tutorial Views: 3,381 Posted By ghorrocks Your question raises more questions than it... Your question raises more questions than it explains. CFX and Fluent are both very capable CFD solvers. If they are doing weird things then you set them up wrong. Do more tutorials and training...

Showing results 1 to 10 of 10

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