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Showing results 1 to 9 of 9 Search took 0.00 seconds. Search: Posts Made By: robboflea

Forum: FLUENT April 12, 2012, 13:17

Replies: 27 Airfoil 2D help Views: 5,114 Posted By robboflea Does this mean that the reverse flow disappears... Does this mean that the reverse flow disappears and then appears again as iterations proceed? How many iterations do you normally do? What are the levels of the residuals? Are the lift and drag...

Forum: FLUENT April 12, 2012, 09:59

Replies: 27 Airfoil 2D help Views: 5,114 Posted By robboflea But from the residuals you don't have reversed... But from the residuals you don't have reversed flow anymore! it only happens at the beginning, and this is not a problem at all. Let the simulation run and see if it converges

Forum: FLUENT April 12, 2012, 03:40

Replies: 27 Airfoil 2D help Views: 5,114 Posted By robboflea Just to know, how are your residuals going? What... Just to know, how are your residuals going? What solver are you using? Pressure based or density based? On how many cells do you have reverse flow?

Forum: FLUENT April 11, 2012, 04:30

Replies: 27 Airfoil 2D help Views: 5,114 Posted By robboflea The mesh from cornell university is certainly... The mesh from cornell university is certainly better than yours. Most likely is a problem of boundary conditions. What values do you use for your boundary conditions?

Forum: FLUENT April 10, 2012, 05:19

Replies: 27 Airfoil 2D help Views: 5,114 Posted By robboflea http://hpce.iitm.ac.in/website/Manuals/Fluent_6.3/... http://hpce.iitm.ac.in/website/Manuals/Fluent_6.3/fluent6.3/help/html/ug/node1208.htm from the 2nd result from google's when searching for "fluent reference values". What's not clear in that? Use...

Forum: FLUENT March 29, 2012, 05:08

Replies: 27 Airfoil 2D help Views: 5,114 Posted By robboflea Assuming that your geometry is correct you don't... Assuming that your geometry is correct you don't need to change it! you only need to change the reference values in Fluent. Those values are used by Fluent to calculate meaningful non-dimensional...

Forum: FLUENT March 29, 2012, 02:17

Replies: 27 Airfoil 2D help Views: 5,114 Posted By robboflea Sorry but I'm missing something. Are you trying... Sorry but I'm missing something. Are you trying to calculate the drag by using a Euler solver? Does Fluent use a kind of magic to do that? Rob

Forum: FLUENT March 25, 2012, 05:25

Replies: 27 Airfoil 2D help Views: 5,114 Posted By robboflea Sometimes I had problems when using 0 Pa as a... Sometimes I had problems when using 0 Pa as a reference condition. Try to see if you get something when using a non-zero operating condition. Could ypu please specify what are your boundary...

Forum: FLUENT March 23, 2012, 09:24

Replies: 27 Airfoil 2D help Views: 5,114 Posted By robboflea Try to initialize your solution with FMG... Try to initialize your solution with FMG initialization: you find it from command line menu in Fluent under 'solve/initialize/FMG initialization'. This generally solved all my problems concerning...

Showing results 1 to 9 of 9

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