Problem about [wallMotionType]

HASAVI · May 4, 2017, 11:23

Hi,I encountered some problem in Converge version2.3
It is about the wallMotionType just like the pictures in attachments

I have measured the normal direction of boundary 1 and boundary 3.
But they are in the same direction (0,0,1).
How to solve it?
Best regards,

HASAVI

MFGT · May 5, 2017, 03:18

Hi,

the message ist just saying that the Liner (boundary2) is not perpendicular to the Piston (boundary1). Propably its just a minor difference (angle = 89.9xx° instead of 90°), however this can lead to problems if the piston moves to TDC and the liner cells are "squezed" and then this angle can change.

Try deleating the liner boundary and recreate it with Create -> Triangle -> Loft directionally:
select both sets of open edge and define the 0/0/1 Align vector.

HASAVI · May 5, 2017, 06:24

Hi,thank you for your suggestion.
It works

chaighodke · May 5, 2017, 17:37

Try to re-create the liner to see if it helps.

May 5, 2017, 03:18		#2
MFGT Senior Member Tobias Join Date: May 2016 Location: Germany Posts: 295 Rep Power: 11	Hi, the message ist just saying that the Liner (boundary2) is not perpendicular to the Piston (boundary1). Propably its just a minor difference (angle = 89.9xx° instead of 90°), however this can lead to problems if the piston moves to TDC and the liner cells are "squezed" and then this angle can change. Try deleating the liner boundary and recreate it with Create -> Triangle -> Loft directionally: select both sets of open edge and define the 0/0/1 Align vector. HASAVI likes this.

May 5, 2017, 17:37		#4
chaighodke New Member Chaitanya Ghodke Join Date: May 2017 Location: Convergent Science, Madison WI Posts: 29 Rep Power: 9	Try to re-create the liner to see if it helps. HASAVI likes this. __________________ --------------------------------------------- Chaitanya D. Ghodke, Ph.D. Senior Research engineer Convergent Science Inc. ---------------------------------------------

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May 5, 2017, 06:24		#3
HASAVI New Member TAIWAN, R.O.C. Join Date: May 2017 Posts: 2 Rep Power: 0	Hi,thank you for your suggestion. It works