Constant velocity fiield - Zalesak Disk

gio3 · September 20, 2016, 14:16

Hello everyone,

I have just started to use interFoam. I have few experience with OpenFOAM but I'm a yet beginner.

I would like to run the Zalesak slotted disk problem which requires a constant velocity field.
Particularly the velocity field is position dependent, the expression is
u_x = -2 \pi y
u_y = 2 \pi x

I tried to use fvOption, using as type meanVelocityForce, but i think that in this way is only possible to add a value to the velociity field (the Ubar value), non an expression.
Any suggests?

Thank you in advance,
Giovanni

winsway · May 16, 2018, 22:29

do you realize the Zalesak slotted disk? i face the same problem with you. if you slove it ,could you share it with me? thank you very much.

fumiya · June 3, 2018, 02:16

You can use funkySetFields to set your velocity profile:
https://openfoamwiki.net/index.php/C...funkySetFields

If you set momentumPredictor entry to no in fvSolution file, the initial velocity profile you set is kept unchanged.

September 20, 2016, 14:16	Constant velocity fiield - Zalesak Disk	#1
gio3 New Member Giovanni Join Date: Sep 2016 Posts: 1 Rep Power: 0	Hello everyone, I have just started to use interFoam. I have few experience with OpenFOAM but I'm a yet beginner. I would like to run the Zalesak slotted disk problem which requires a constant velocity field. Particularly the velocity field is position dependent, the expression is u_x = -2 \pi y u_y = 2 \pi x I tried to use fvOption, using as type meanVelocityForce, but i think that in this way is only possible to add a value to the velociity field (the Ubar value), non an expression. Any suggests? Thank you in advance, Giovanni

June 3, 2018, 02:16		#3
fumiya Senior Member Fumiya Nozaki Join Date: Jun 2010 Location: Yokohama, Japan Posts: 266 Blog Entries: 1 Rep Power: 19	You can use *funkySetFields* to set your velocity profile: https://openfoamwiki.net/index.php/C...funkySetFields If you set *momentumPredictor* entry to no in fvSolution file, the initial velocity profile you set is kept unchanged. __________________ [Personal] Blog: https://caefn.com/ Twitter: https://twitter.com/FumiyaNozaki SlideShare: http://www.slideshare.net/fumiyanozaki96

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May 16, 2018, 22:29		#2
winsway New Member Qi Xueyu Join Date: Mar 2018 Posts: 7 Rep Power: 8	do you realize the Zalesak slotted disk? i face the same problem with you. if you slove it ,could you share it with me? thank you very much.