# problem in general moving object and collision modeling

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June 11, 2014, 15:40
problem in general moving object and collision modeling
#1
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Join Date: Jun 2014
Posts: 15
Rep Power: 5
Hello everyone,
I have a big problem with my modeling.
I want to model some concrete block and see how it interact with water in the flume.
I put GMO(and collision) & Viscous and turbulence & Gravity in physics of model.
coefficient of friction=0.5
coefficient of restitution=0.53
Coupled motion with mass density=2000 (initial velocities=0)
boundary condition: y min & y max & z min = wall , z max = symmetry , x min= wave , x max = wall.
but blocks move and behave unreasonable as you can see in attached image, the blocks immerge together!!!
Attached Images
 1.jpg (29.9 KB, 29 views) 2.jpg (34.2 KB, 29 views)

 June 14, 2014, 02:03 #2 New Member   Saeid Ahmadvand Join Date: Jun 2014 Posts: 15 Rep Power: 5 Is there anyone who can solve my problem???

 June 27, 2014, 03:44 #3 New Member   frode gimsøy Join Date: Jun 2014 Posts: 9 Rep Power: 5 Did you try smaller cells in your mesh?

 June 27, 2014, 04:15 #4 New Member   Saeid Ahmadvand Join Date: Jun 2014 Posts: 15 Rep Power: 5 Hi, yes, as you seen at those picture, it is very fine mesh. This problem is not related to the mesh.

 June 28, 2014, 11:39 #5 New Member   frode gimsøy Join Date: Jun 2014 Posts: 9 Rep Power: 5 Are the small blocks separated from the big block? Did you try placing them further away before starting the simulation?

 June 28, 2014, 17:18 #6 New Member   Saeid Ahmadvand Join Date: Jun 2014 Posts: 15 Rep Power: 5 yes, I do it.

 August 30, 2016, 04:10 #7 New Member   Join Date: Aug 2016 Posts: 3 Rep Power: 2 have you ever use restitution coefficient 1?

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