# Disc brake simulation with solids

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 June 13, 2012, 04:11 Disc brake simulation with solids #1 Senior Member   Roland Rakos Join Date: Mar 2009 Posts: 131 Rep Power: 16 Hello, I would like to calculate a disc brake. The disc contains an inner fluid domain.The temperature distribution in the bodies will be the main output of the simulation therefore the solid domains too are included in the CFX modell. The disc are rotating. The modell is quite complicated therefore I would like to complate the analysis in steady state. The inner fluid domain of disc is defined as rotating fluid domain. The disc is defined as rotating solid domain. Finally the outside fluid domain is stationary. The disc and the brake shoe are connected with „solid-solid” interface. A heat source is defined at this interface and I would like to investigate the heat expansion in the disc. Based on results, it can be seen that the fluid domain is rotating but the solid domain (disc) is stationary in spite of my settings. The temperature distribution (in the disc body) shows that the rotating of solid is not occur. What can be the problem? How should I solve this case? Thanks a lot, Best regards Roland

 June 13, 2012, 08:39 #2 Super Moderator   Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,641 Rep Power: 142 I seem to recall that rotating solid domains was only introduced in V14. If you have an earlier version of CFX you will not be able to do this.

June 13, 2012, 09:36
#3
Senior Member

Roland Rakos
Join Date: Mar 2009
Posts: 131
Rep Power: 16
Quote:
 Originally Posted by ghorrocks I seem to recall that rotating solid domains was only introduced in V14. If you have an earlier version of CFX you will not be able to do this.
I am working in 12.1.
There is a "Solid Motion" option. What kind of problems can be solved by this option? Perhaps can it help me in this problem?

Thanks
Roland

June 13, 2012, 09:38
#4
Super Moderator

Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,641
Rep Power: 142
Quote:
 Perhaps can it help me in this problem?
Nope. If you want to do a rotating solid domain you will need V14. And you better check that my dodgy memory is correct and that V14 does have rotating solid domains before you commit to it.

June 13, 2012, 09:52
#5
Senior Member

Roland Rakos
Join Date: Mar 2009
Posts: 131
Rep Power: 16
Quote:
 Originally Posted by ghorrocks Nope. If you want to do a rotating solid domain you will need V14. And you better check that my dodgy memory is correct and that V14 does have rotating solid domains before you commit to it.
OK, I will check it.

Thanks a lot
R.