small size cell problem(moving mesh)

May 12, 2007, 23:27

Hi guys, i generated moving mesh for sliding vane pump, in order to change cell position i used filling. when i run the solver solution diverge after some iter. then i checked result velocity is a very hight in smallest size of mesh(0.001 mm) i think velocity difference in biggest cell(0.41mm) and smallest cell(0.001mm) is too big that's why solution is unstable. how can i decide smallest cell, please advise.

May 12, 2007, 23:45

Hi guys, i generated moving mesh for sliding vane pump, in order to change cell position i used filling. when i run the solver solution diverge after some iter. then i checked result velocity is a very high in smallest size of mesh(0.001 mm) i think velocity difference in biggest cell(0.41mm) and smallest cell(0.001mm) is too big that's why solution is unstable. how can i decide smallest cell, please advise.

May 12, 2007, 23:27	small size cell problem(moving mesh)	#1
Elyor Guest Posts: n/a	Hi guys, i generated moving mesh for sliding vane pump, in order to change cell position i used filling. when i run the solver solution diverge after some iter. then i checked result velocity is a very hight in smallest size of mesh(0.001 mm) i think velocity difference in biggest cell(0.41mm) and smallest cell(0.001mm) is too big that's why solution is unstable. how can i decide smallest cell, please advise.

May 12, 2007, 23:45	small size cell problem(moving mesh)	#2
Elyor Guest Posts: n/a	Hi guys, i generated moving mesh for sliding vane pump, in order to change cell position i used filling. when i run the solver solution diverge after some iter. then i checked result velocity is a very high in smallest size of mesh(0.001 mm) i think velocity difference in biggest cell(0.41mm) and smallest cell(0.001mm) is too big that's why solution is unstable. how can i decide smallest cell, please advise.

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