UDF "DEFINE CONTACT" How does it work? -- CFD Online Discussion Forums

November 29, 2014, 06:20	UDF "DEFINE CONTACT" How does it work?	#1
kpestov New Member Kirill Pestov Join Date: May 2014 Posts: 1 Rep Power: 0	Hello, everyone! I’m modeling a 2D axisymmetric problem of plunger pump in ANSYS Fluent with using deforming mesh and 6DOF, material is oil. The ball of this plunger pump is located in limited space and when pressure starts to affect on the ball it moves to boundary and has contact with wall. I would like to specify special boundary condition in this place with help udf “DEFINE CONTACT”. There is example of this udf in Help but some things are not clear for myself. I want to leave one cell in place of contact between wall and ball and there is no mass flow there. If somebody has experience in definition of contact in Fluent, could you help me, please? Picture of my problem http://s019.radikal.ru/i627/1411/d4/ef18ead7ad7d.png Has anyone faced the same problem? Best wishes!

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