# Hydraulic jump

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 February 14, 2011, 16:59 Hydraulic jump #1 Member   Arnout Join Date: Nov 2010 Posts: 46 Rep Power: 15 Hi, I'm trying to simulate a hydraulic jump. Using VOF model, turbulent. Geometry is easy, slope of 5 degrees and a obstruction on the bottom. The water level before the opstruction is high, a little higher than the obstruction. Behind the obstruction, the water level is low and the velocity is much higher. But now hydraulic jump, the water level stays low. If I do experiments, I see a hydraulic jump. In my setup, Fr>1 andRe >10000. I use wall functions in a 2D geometry. Any idea wat I'm doing wrong? Is it possible to model hydraulic jumps in 2D or do I missed some physical understanding? Is there someone trying this before in OpenFoam? I have seen some fluent 2D calculations whit a hydraulic jump. Thank you! Arnout

 February 14, 2011, 23:12 #2 Senior Member     Santiago Marquez Damian Join Date: Aug 2009 Location: Santa Fe, Santa Fe, Argentina Posts: 452 Rep Power: 23 If you can read spanish, here it's that you are looking for: http://www.amcaonline.org.ar/ojs/ind...view/2826/2763 Regards. __________________ Santiago MÁRQUEZ DAMIÁN, Ph.D. Research Scientist Research Center for Computational Methods (CIMEC) - CONICET/UNL Tel: 54-342-4511594 Int. 7032 Colectora Ruta Nac. 168 / Paraje El Pozo (3000) Santa Fe - Argentina. http://www.cimec.org.ar

 February 15, 2011, 16:54 #3 Member   Arnout Join Date: Nov 2010 Posts: 46 Rep Power: 15 Hi! Thabo you. My case is different from the one in the article, I'm looking ar a jump behind a obstacle on the bottom. Let's see it as a river with a stone in it. Going to try it with fluent now, wil keep Cfd online updated! Any other hints are still welcome!! Arnout

 November 24, 2011, 07:57 #4 Member   Nirav Join Date: Jul 2011 Posts: 43 Rep Power: 14 hii king can you please help me set up a geometry and can you tell me what results you obtaned using fluent, i'm also trying to simulate a hydraulic jump using fluent. do let me know what conditions you applied

 November 24, 2011, 12:45 #5 Senior Member   Matthew Denno Join Date: Feb 2010 Posts: 138 Rep Power: 16 It should work in 2d. If you post your case I will take a look at it.

June 18, 2023, 07:55
#6
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Join Date: Apr 2015
Posts: 33
Rep Power: 11
hey OpenFOAM's guys
I need a graphical figure of the free surface profile of the hydraulic jump with by Interfoam solver in a rectangular channel.

(a time-averaged volume fraction obtained in the jump
(mean alpha in field average)+ isocontour volume fraction =0.5)

Can someone send me?

Because the jumps I simulate have a strange area which I have shown in the figure.
thank you.
Attached Images
 free surface2222.jpg (34.7 KB, 14 views)