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Active Contributor
amy.jin
Posts: 26
Registered: ‎08-11-2013
Accepted Solution

Liquid splash

306 Views, 7 Replies
02-19-2014 05:58 PM

Hi,

 

Can Autodesk Simulation CFD 2014 simulation the liquid splash?

Thanks very much.

splash.jpg

 

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*Expert Elite*
OmkarJ
Posts: 435
Registered: ‎10-02-2012

Re: Liquid splash

02-20-2014 01:11 AM in reply to: amy.jin

How about using angular motion to the gears and enabling free surface model? I don't know though, if the wall adhesion forces are addressed here. 

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Active Contributor
amy.jin
Posts: 26
Registered: ‎08-11-2013

Re: Liquid splash

02-24-2014 10:16 PM in reply to: OmkarJ
Hi OmkarJ, Thanks for your reply. I am not sure that if CFdesign 2014 hasn't solution for this problem.
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Product Support
apolo.vanderberg
Posts: 299
Registered: ‎08-31-2011

Re: Liquid splash

02-25-2014 05:27 AM in reply to: amy.jin

Omkar's reply is how we would do this.

Given that the gears overlap space we cannot use a rotating region, however you can do Motion and Free Surface to see how the fluid moves due to the gears.

 

Feel free to try this on a 2D slice of a model to get your bearings on how this would work

 

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Active Contributor
amy.jin
Posts: 26
Registered: ‎08-11-2013

Re: Liquid splash

04-16-2014 02:24 AM in reply to: apolo.vanderberg

Hi Apolo,

 

How I can setup  to do Motion and Free Surface for 3D or 2D model?

If you have any benchmark for this problem?

Thanks very much.

 

Amy

 

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Product Support
apolo.vanderberg
Posts: 299
Registered: ‎08-31-2011

Re: Liquid splash

04-16-2014 03:33 AM in reply to: amy.jin

Please check out the Help as it discusses how to set up a Free Surface model in detail.

Also check out SimTV

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Active Contributor
amy.jin
Posts: 26
Registered: ‎08-11-2013

Re: Liquid splash

04-20-2014 08:48 PM in reply to: amy.jin

Hi Apolo,

 

Thanks for your reply.

If you have any suggestion for the motion setup for gear-driven flow?

How should I setup the rotation speed because it cannot using rotation region?

Is it reasonable that set the rotation speed to driving wheel and driven wheel at Motion?

Thanks very much.

 

Amy

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Product Support
Royce_adsk
Posts: 625
Registered: ‎08-24-2011

Re: Liquid splash

04-21-2014 05:40 AM in reply to: amy.jin

Hi Amy,

 

You would use the motion setup task instead of a rotating region.   You would use the perscribed angular motion definition for both gears.

 

More often I would actually end up using the combined linear and angular motion so I can place my gear outside of my flow domain when building my CAD.  Then use the linear initial position setting to place my gear in space where I need it. This way you don't have a imprint or ghost in the mesh where the gear was initially in CAD. This allows the flow domain mesh to be much cleaner and more efficient.

 

Best regards,



Royce Abel
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