CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   FLUENT (http://www.cfd-online.com/Forums/fluent/)
-   -   cavitation fluent (http://www.cfd-online.com/Forums/fluent/117243-cavitation-fluent.html)

saida May 5, 2013 08:16

cavitation fluent
 
Hi

:confused::confused: can you help me how i simulate flow with cavitation around hydrofoil (naca0015) in fluent.


please

thousand May 5, 2013 14:55

hi
for cavitation simulation you should use this proccess:
model/mullty phase/mixture/number of phase2
material/select primary & secondary phase
define/phases/phase1/select primary phase
define/phases/phase2/select secondary phase
define/phases/interaction/mass/select cavitation/set vapor pressure

saida May 6, 2013 05:29

hi
thanks

but i have problem.when i simulate the cas in fluent.vf-phase is not changed.

thousand May 6, 2013 22:09

hi
check pressure perhaps presure is upper than cavitation pressure

thousand May 6, 2013 22:26

excuse me
u should set version of fluent ddp too!

saida May 7, 2013 04:43

hi
i use fluent 6.3.26.i think the problem is in characteritic of fluid;fr exmp:surface tension coef and non condensable gaz fraction.becaus i put 3166 pas for 25C at pressure of vaporization;can you give me the correct values
please
thanks

thousand May 7, 2013 04:59

no if your material is water set true pressure for water surface tension And vapor pressure use this links:
http://www.engineeringtoolbox.com/wa...ion-d_597.html
http://people.emich.edu/jthomsen/The...amics/appF.pdf
but i dont think your problem be this!
did u use ddp version?

saida May 8, 2013 08:04

hi

yes i use ddp version for 2d


th

thousand May 8, 2013 11:29

plz send ur cas to modify it 4 u
kh_zahani@yahoo.com
but its have a lil delay:)

saida May 9, 2013 07:36

HI

I send u by email the file.cas and report about my work

adjali.gm25@gmail.com

thanks

saida May 14, 2013 06:31

hi

did yoy recieve file.cas.

th


All times are GMT -4. The time now is 10:13.