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

Forum: FLUENT November 5, 2009, 11:16

Replies: 23 Mixing Station with high swirl Views: 9,907 Posted By Trev I have some experience with modelling reactive... I have some experience with modelling reactive flows in cyclone combustors for which the case setup is similar and I can try and help out but there are bound to be more experienced people on this...

Forum: FLUENT November 5, 2009, 10:00

Replies: 23 Mixing Station with high swirl Views: 9,907 Posted By Trev Hi Ale, Sorry for the late reply but I've... Hi Ale, Sorry for the late reply but I've been really busy recently. For the turbulence intensity I would suggest using around 5-10%. With regards to the target mass flow rate test it to see...

Forum: FLUENT October 28, 2009, 06:09

Replies: 23 Mixing Station with high swirl Views: 9,907 Posted By Trev I wouldn't use the pressure value from the steady... I wouldn't use the pressure value from the steady state simulation as the pressure field has not been correctly established and it omits the negative pressure region in the core region. Instead I...

Forum: FLUENT October 27, 2009, 12:11

Replies: 23 Mixing Station with high swirl Views: 9,907 Posted By Trev The outflow boundary condition isn't really... The outflow boundary condition isn't really suitable for this type of simulation and a pressure outlet should be used. If you don't have any idea what the backflow pressure is you could try using a...

Forum: FLUENT October 27, 2009, 09:18

Replies: 23 Mixing Station with high swirl Views: 9,907 Posted By Trev Hi Ale, First of all the turbulence is not... Hi Ale, First of all the turbulence is not isotropic it is anisotropic. This is why the RSM model is required as the turbulent viscosity parameter of the k-e RNG model treats turbulence as...

Forum: FLUENT October 9, 2009, 08:22

Replies: 23 Mixing Station with high swirl Views: 9,907 Posted By Trev I doubt the solution is diverging if your... I doubt the solution is diverging if your residuals converge to the desired limits. I experience this kind of behaviour all the time when simulating swirling flows and unfortunately it is just a case...

Forum: FLUENT September 30, 2009, 11:37

Replies: 23 Mixing Station with high swirl Views: 9,907 Posted By Trev You need to go to the solve/monitors/surface menu... You need to go to the solve/monitors/surface menu and pick which positions and what variables you want to monitor, the X axis needs to be set to flow time and have them update with every time step....

Forum: FLUENT September 30, 2009, 05:07

Replies: 23 Mixing Station with high swirl Views: 9,907 Posted By Trev Depends on what frequencies your after. You can... Depends on what frequencies your after. You can easily calculate the PVC frequency from the angular velocity of the core which should scale linearly with inlet velocity. The domain exit is open ended...

Forum: FLUENT September 29, 2009, 06:28

Replies: 23 Mixing Station with high swirl Views: 9,907 Posted By Trev With regards to your question, yes it is a... With regards to your question, yes it is a physical phenomenon and the steady-state solver is unable to capture this as it is periodic. Usually the steady-state residuals will show massive...

Forum: FLUENT September 28, 2009, 13:16

Replies: 23 Mixing Station with high swirl Views: 9,907 Posted By Trev Hi AleDellaRocca, Use your current solution... Hi AleDellaRocca, Use your current solution as a starting point for carrying out an unsteady analysis. Activate the RSM model and switch momentum, turbulence and reynolds stresses to QUICK...

Showing results 1 to 10 of 10

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