hydraulic jump ... multiphase flow cfx

mohsen.samie · August 28, 2015, 16:13

hi. im trying to simulate a hydraulic jump in cfx for my master thesis. water come out 5 parallel offset jets and fill the stilling basin and after fill that submerged jump will occur. i know this is a transient case and multiphase flow. and needs to write some expressions for time steps. but i dont know about homogeneous in fluid model and about air and water on continuous fluid and dispersed fluid or other kind of morphology...should i change them and how should i change that? and anythings that i need to know about this case? here is a picture of what i want to simulate.

http://www.4shared.com/office/Waif35Ahba/2_online.html

tnx to help me
sincerely

ghorrocks · August 28, 2015, 17:08

Your starting point should be the tutorial examples which come with CFX. The free surface flow over a bump is a good example.

mohsen.samie · August 29, 2015, 03:31

Quote:

Originally Posted by ghorrocks

Your starting point should be the tutorial examples which come with CFX. The free surface flow over a bump is a good example.

ok. tnx. i have practiced 2 tutorials example at cfx tutorials ... the tank flush and the multiphase water and air in channel...both of them have expressions and transient. ok i'll do the flow over a bump too

yaseen wsu · October 24, 2015, 06:34

very interested work, But do you believe that your case solved by VOF, I think you should apply mixing, because it has very high Reynolds NO. , or tested what is the maximum Reynolds No. that can be solved by VOF.

August 28, 2015, 16:13	hydraulic jump ... multiphase flow cfx	#1
mohsen.samie New Member mohsen Join Date: Aug 2015 Posts: 7 Rep Power: 10	hi. im trying to simulate a hydraulic jump in cfx for my master thesis. water come out 5 parallel offset jets and fill the stilling basin and after fill that submerged jump will occur. i know this is a transient case and multiphase flow. and needs to write some expressions for time steps. but i dont know about homogeneous in fluid model and about air and water on continuous fluid and dispersed fluid or other kind of morphology...should i change them and how should i change that? and anythings that i need to know about this case? here is a picture of what i want to simulate. http://www.4shared.com/office/Waif35Ahba/2_online.html tnx to help me sincerely

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August 28, 2015, 17:08		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	Your starting point should be the tutorial examples which come with CFX. The free surface flow over a bump is a good example.

October 24, 2015, 06:34		#4
yaseen wsu Senior Member yaseen Join Date: Oct 2015 Location: Hawler Posts: 174 Rep Power: 10	very interested work, But do you believe that your case solved by VOF, I think you should apply mixing, because it has very high Reynolds NO. , or tested what is the maximum Reynolds No. that can be solved by VOF.