modelling of a rotary lip seal

jw-cfd · April 14, 2014, 05:43

Hi all,

I am trying to model a lubricated rotary lip seal mounted on a rotating shaft. I am struggling to decide on decide which way is best to model the system.

I suspect the analyis would need to be carried out in 3D as the shaft is rotating in the radial direction but the lubricant is acting on both sides of the lip seal, and the contact band width changes during the process. I anticipate that this analysis would include non-linear boundaries, large deformations, and moving mesh.

I would appreciate it if someone could point me in the right direction to start the analysis.

Kind Regards,

tas38 · April 19, 2014, 12:10

I would strongly suggest a quick literature review to point you in the right direction. There are a range of strategies and assumptions made in developing numerical models for lip seals such as the choice of fluid domain solution, Reynolds Eqn. vs. Navior-Stokes, or the type of solid deformation model, just as an example.

The solution approach should be guided based upon on what pertinent details are to extracted from the numerical model, i.e. leakage rates, damping coefficients, etc.

April 14, 2014, 05:43	modelling of a rotary lip seal	#1
jw-cfd New Member jw-2014 Join Date: Apr 2014 Posts: 1 Rep Power: 0	Hi all, I am trying to model a lubricated rotary lip seal mounted on a rotating shaft. I am struggling to decide on decide which way is best to model the system. I suspect the analyis would need to be carried out in 3D as the shaft is rotating in the radial direction but the lubricant is acting on both sides of the lip seal, and the contact band width changes during the process. I anticipate that this analysis would include non-linear boundaries, large deformations, and moving mesh. I would appreciate it if someone could point me in the right direction to start the analysis. Kind Regards,

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April 19, 2014, 12:10		#2
tas38 Senior Member Troy Snyder Join Date: Jul 2009 Location: Akron, OH Posts: 220 Rep Power: 19	I would strongly suggest a quick literature review to point you in the right direction. There are a range of strategies and assumptions made in developing numerical models for lip seals such as the choice of fluid domain solution, Reynolds Eqn. vs. Navior-Stokes, or the type of solid deformation model, just as an example. The solution approach should be guided based upon on what pertinent details are to extracted from the numerical model, i.e. leakage rates, damping coefficients, etc.