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Showing results 1 to 13 of 13 Search took 0.00 seconds. Search: Posts Made By: ghorrocks

Forum: CFX June 19, 2014, 08:49

Replies: 32 General momentum source Views: 6,388 Posted By ghorrocks If dispersion of the fan's outflow is important... If dispersion of the fan's outflow is important then it is probably more important to get the turbulence right rather than include the swirl component. Please post your CEL so I can understand...

Forum: CFX June 19, 2014, 07:19

Replies: 32 General momentum source Views: 6,388 Posted By ghorrocks Most people do not bother with the radial or... Most people do not bother with the radial or theta components. Most people just model the axial component. That will make things much simpler. You can easily add a turbulence source as well if that...

Forum: CFX June 19, 2014, 06:49

Replies: 32 General momentum source Views: 6,388 Posted By ghorrocks Which bit do you not know? How to set the... Which bit do you not know? How to set the momentum source (this is covered in the CFX documentation), or how to specify it in ax, rad, cyl components (google cylindrical coords or something like...

Forum: CFX November 10, 2013, 04:39

Replies: 32 General momentum source Views: 6,388 Posted By ghorrocks I do not know why it is not working for... I do not know why it is not working for multiphase. You are going to have to fiddle with it and see if you can get it to work. Alternately contact CFX support.

Forum: CFX November 9, 2013, 06:27

Replies: 32 General momentum source Views: 6,388 Posted By ghorrocks If this is a free surface model with a coherent... If this is a free surface model with a coherent free surface then use the homogenous model. You will need to do some basic fault finding - Is the disk above or below the water line? Is your free...

Forum: CFX November 9, 2013, 04:23

Replies: 32 General momentum source Views: 6,388 Posted By ghorrocks Can you show what you are getting in the single... Can you show what you are getting in the single phase and multiphase simualtion results? Some images would help. Also are you using homogenous or inhomogenous multiphase models?

Forum: CFX November 7, 2013, 05:37

Replies: 32 General momentum source Views: 6,388 Posted By ghorrocks If you are looking for a spiral flow then I would... If you are looking for a spiral flow then I would expect to see something like: Fy = a * z Fz = -a * y I do not see Fy has any z term in your equation, nor has Fz has any y term. So you are...

Forum: CFX November 7, 2013, 05:10

Replies: 32 General momentum source Views: 6,388 Posted By ghorrocks I do not have time to debug your equations - but... I do not have time to debug your equations - but I can see your "Fn volume" equations are wrong - the Volume force domain just cancels out as they are currently written.

Forum: CFX November 7, 2013, 04:13

Replies: 32 General momentum source Views: 6,388 Posted By ghorrocks Can you show an image of what you are getting? Can you show an image of what you are getting?

Forum: CFX November 6, 2013, 16:51

Replies: 32 General momentum source Views: 6,388 Posted By ghorrocks The name "StepRotor" is used for a CEL expression... The name "StepRotor" is used for a CEL expression and your AV name. This is a really bad idea - parsers get very confused with this. There may be others, I did not check in detail. Make sure all...

Forum: CFX November 6, 2013, 06:12

Replies: 32 General momentum source Views: 6,388 Posted By ghorrocks It would probably be best if you posted the... It would probably be best if you posted the output file which shows the error message, and includes your CCL.

Forum: CFX November 6, 2013, 05:56

Replies: 32 General momentum source Views: 6,388 Posted By ghorrocks The unrecognised names error simply means you... The unrecognised names error simply means you need to be referencing the correct objects. If you cannot fix this error then post the output and we can give it a go for you.

Forum: CFX November 1, 2013, 04:33

Replies: 32 General momentum source Views: 6,388 Posted By ghorrocks "Wake in front of the disk".... I don't get that.... "Wake in front of the disk".... I don't get that. How can a propeller which generates thrust have a wake in front of the prop? Isn't the water just sucked into the prop disk? CEL (assuming the...

Showing results 1 to 13 of 13

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