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m.shams June 10, 2010 08:16

cylinder and piston
 
2 Attachment(s)
Hi every one


Excuse me if my English is not good.


I am beginner in cfx. i simulated cylinder and piston. figure below indicates the geometry and meshes. For simulating piston I used mesh deformation feature and analyze type is transient. but when solving error below occured.


If possible, please guide me.



Thanks a lot



Error:

Fluid Flow_003 has terminated with errors.
Run concluded at: Wed Nov 10 15:25:42 2010
Results are in

C:\piston- 1 domain\piston_files\dp0\CFX\CFX\Fluid Flow_003.res




the *.out file of solution attached to this post









ghorrocks June 10, 2010 09:13

You have defined the piston motion as a constant - 2[m]. This means the mesh will jump to this position in the first time step and stop there. This is wrong, you have to write the displacement as a function of time, maybe a sin() function or something so the piston can move gradually as a function of time from the starting location to the finish location.

m.shams June 10, 2010 16:21

my problem solved with your guid
thanks a lot for your reply.


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