5 Replies Latest reply on Jan 21, 2009 10:18 AM by Basil Gello

Flow analysis of a 2-stroke engine

Jimmy Hoac Jan 14, 2009 7:44 PM

I am trying to run a flow analysis of a 2-stroke engine. It is my first time using Floworks and have gone through the tutorials and whatnot. My main question is if Floworks is able to run a flow analysis of moving objects? In the engine, flow comes through the inlet ports, gets covered by the piston, and goes out the outlet ports. I am able to run an analysis of the engine where only the inlet port is exposed. However, after flow comes through the inlet, the inlet port is sealed and only the outlet port is exposed. I'm not sure how to run the analysis if the inlet port is sealed. In my attempts on doing a stand still analysis of this configuration, Solidworks crashed every time.

Flow analysis of a 2-stroke engine

Bill McEachern Jan 14, 2009 8:01 PM (in response to Jimmy Hoac)

This is not in Flworks sweet spot - ideally you need a code witha moving mesh capability. That said though you could examinethe effectiveness of the ports with a transient analysis and time controlled BC's. This is pretty straight forward.
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Flow analysis of a 2-stroke engine

Jimmy Hoac Jan 14, 2009 9:19 PM (in response to Jimmy Hoac)

Are there any tutorials on transient analysis and time controlled BC's? What are time controlled BC's by the way? Thanks for your reply!
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- Flow analysis of a 2-stroke engine
  
  Bill McEachern Jan 14, 2009 10:02 PM (in response to Jimmy Hoac)
  
  BC's are boundary conditions.
  
  There does not appear to be a transient example inthe tutorials....
  
  Anyway, now is not a good time for a long explanation from me - have to run - however select time dependency when specifying physiocal features in hte wizard. Then when you apply a BC you will see this f(t) symbol I think and you can put in time varying values for the BC.
  
  Sorry I have to go.
  Bill
  
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    Bill McEachern Jan 14, 2009 10:03 PM (in response to Bill McEachern)
    
    and one more thing check the on-line help accessed fromthe BC's or the wizard dialogs for more info....that should get you started.
    
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Flow analysis of a 2-stroke engine

Basil Gello Jan 21, 2009 10:18 AM (in response to Jimmy Hoac)

Jimmy,

I'd like to advise you the AVL FIRE or similar code. It is developed especially for internal combustion engines and gas turbines design. Check their website for trial version, and maybe you will get it.

Regards, Basil
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