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

Forum: Main CFD Forum November 8, 2015, 04:01

Replies: 28 How to check size scale effect in a butterfly valve Views: 2,055 Posted By fresty Not really sure if the same formula could be... Not really sure if the same formula could be applied on vapor phase water.. however, as we know from adiabatic conditions and from mathematical as well as physical point of view the density change...

Forum: Main CFD Forum November 8, 2015, 00:23

Replies: 28 How to check size scale effect in a butterfly valve Views: 2,055 Posted By fresty That's good to know.. yeah the P was just... That's good to know.. yeah the P was just symbolic.. The results seem pretty reasonable.. Regarding lower value, you may have to refine mesh further to get rid of grid induced deviance, apply...

Forum: Main CFD Forum November 6, 2015, 16:21

Replies: 28 How to check size scale effect in a butterfly valve Views: 2,055 Posted By fresty You could probably use CEL expression to alter... You could probably use CEL expression to alter the constant density of the material (create a copy of the material and then in material properties input the density as an expression) as a function of...

Forum: Main CFD Forum November 6, 2015, 07:28

Replies: 28 How to check size scale effect in a butterfly valve Views: 2,055 Posted By fresty Not sure if I could find something precisely for... Not sure if I could find something precisely for your intended simulation but I could bet on this being doable in CFX.. have you acquired some results using compressibility for your simulation? There...

Forum: Main CFD Forum November 4, 2015, 14:35

Replies: 28 How to check size scale effect in a butterfly valve Views: 2,055 Posted By fresty I believe yes the next logical step would be to... I believe yes the next logical step would be to apply compressibility on both water and water vapor.. Though i wouldn't be able to summarize it all but yes this is pretty much doable in ansys and...

Forum: Main CFD Forum November 4, 2015, 13:03

Replies: 28 How to check size scale effect in a butterfly valve Views: 2,055 Posted By fresty Alright.. well to think over and correct myself,... Alright.. well to think over and correct myself, as you reminded me that the flow rate in both the valves would not be constant so yes the velocity is not proportional to area... However as...

Forum: Main CFD Forum November 4, 2015, 11:47

Replies: 28 How to check size scale effect in a butterfly valve Views: 2,055 Posted By fresty Are you using compressible flow model..? If your... Are you using compressible flow model..? If your flow is incompressible then change in area at constant pressure drop would simply proportionally increase or decrease the velocity.. if i am right...

Forum: Main CFD Forum November 4, 2015, 11:06

Replies: 28 How to check size scale effect in a butterfly valve Views: 2,055 Posted By fresty My bad, misread part of your expression... ignore... My bad, misread part of your expression... ignore my earlier comment regarding the error... However: you may need to use a mass flowrate inlet and pressure outlet boundary condition to see how for...

Forum: Main CFD Forum November 4, 2015, 10:06

Replies: 28 How to check size scale effect in a butterfly valve Views: 2,055 Posted By fresty What are you comparing your results with? Do you... What are you comparing your results with? Do you have a reference model/ manual calculations/ benchmark results..?

Showing results 1 to 9 of 9

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