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Change Geometry With Time/ A collapsing geometry with time

Posted Aug 11, 2019, 6:49 p.m. EDT Structural & Acoustics, Heat Transfer & Phase Change, Parameters, Variables, & Functions Version 5.2a 1 Reply

Suraj Panigrahi
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The below post is related to an archived discussion

[start here] I have a hydrogel which is modeled as a cylinder. The hydrogel collapses or shrinks when exposed to a pulsating LASER.

So, I want to model the cylinder so that the radius changes with time. The LASER is activated for 60s.

I created an analytical function of radius and added the variable r(t)=0.65(1-t/100). I find error while adding this function in the geomtry. Is there any way to model this problem?

1 Reply Last Post Aug 23, 2019, 2:47 p.m. EDT
Jeff Hiller COMSOL Employee

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Posted: 5 years ago Aug 23, 2019, 2:47 p.m. EDT

Hi Suraj,

See this blog which discusses the two interfaces available to model changing geometries.

Best,

Jeff

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Jeff Hiller
Hi Suraj, See this [blog](www.comsol.com/blogs/model-translational-motion-with-the-deformed-mesh-interfaces/) which discusses the two interfaces available to model changing geometries. Best, Jeff

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