Dynamic meshing 2 stroke engine issue

  • Thread starter tonisantos
  • Start date
  • #1

Main Question or Discussion Point

Hello everyone,
im a 5th year student and im doing my final project which consists on analyzing the scavenging process of a 2 stroke opposed piston engine, but im having a hard time creating the UDF for the dynamic meshing thing.
Could anyone please help me?
 

Answers and Replies

  • #2
minger
Science Advisor
1,495
1
OK, first, what part of the mesh needs to move? Why do you not just apply a time-dependant boundary condition?

Also, what is a UDF file? I assume something related to the grid motion.
 
  • #3
UDF (user defined function) is required to get dynamic meshes working...
I need to move 2 piston heads inside the same cilinder in oposite directions
 
  • #4
minger
Science Advisor
1,495
1
Right, we use CFX here, so I'm not familiar with these UDFs.
 
  • #5
1
0
Hello, I am also simulating a two stroke opposed piston engine. Has anyone managed to program a UDF for the dynamic mesh please? Thanks.

Darren
 

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