dambreak problem

upqiang · November 22, 2009, 21:55

I want to simulate dambreak using Fluent Software. As we know, in the procedure of dambreak, the breach becomes larger with time , so I decide to simulate the procedure using dynamic mesh,and I wonder how we can do to realize it. It is simply assumed that the shape of the breach at different time is a rectangular .I appreciate your time very much. Thank you.

Philipov · November 23, 2009, 05:09

The size of the break is very complicated to assess... if you succeed to get the size of the break... it is difficult to find the exact place of break... so I offer you to choose a median value of the break size and place... after that proceed as an ordinary simulation...

upqiang · November 23, 2009, 08:22

Quote:

Originally Posted by Philipov

The size of the break is very complicated to assess... if you succeed to get the size of the break... it is difficult to find the exact place of break... so I offer you to choose a median value of the break size and place... after that proceed as an ordinary simulation...

thank you for reply.
I have got the size of the break and the exact place of break at different time.But I don't know how to simulate it .I wonder whether the macro DEFINE_GRID_MOTION is useful for the break simulation.

Philipov · November 23, 2009, 10:16

Do not waste your time to model this... focus on the flooding.... the break takes about 2-3 seconds... and this process is of a question how it happens .... leave the process of rupture...

November 22, 2009, 21:55	dambreak problem	#1
upqiang New Member Changqiang Lin Join Date: Jun 2009 Posts: 2 Rep Power: 0	I want to simulate dambreak using Fluent Software. As we know, in the procedure of dambreak, the breach becomes larger with time , so I decide to simulate the procedure using dynamic mesh,and I wonder how we can do to realize it. It is simply assumed that the shape of the breach at different time is a rectangular .I appreciate your time very much. Thank you.

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November 23, 2009, 05:09		#2
Philipov Senior Member Svetlin Filipov Join Date: Mar 2009 Location: United Kingdom Posts: 176 Rep Power: 17	The size of the break is very complicated to assess... if you succeed to get the size of the break... it is difficult to find the exact place of break... so I offer you to choose a median value of the break size and place... after that proceed as an ordinary simulation...

November 23, 2009, 10:16		#4
Philipov Senior Member Svetlin Filipov Join Date: Mar 2009 Location: United Kingdom Posts: 176 Rep Power: 17	Do not waste your time to model this... focus on the flooding.... the break takes about 2-3 seconds... and this process is of a question how it happens .... leave the process of rupture...