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injection into foam

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Old   December 15, 2005, 23:33
Default injection into foam
  #1
jemteo
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Need some advice:

i want to visualize the flow path of water through foam ( of different porosity) from a syringe and needle. the needle is inserted randomly into foam. i do not want to model the needle into the foam. some questions which i have

(1) is it a steady state or transient simulation? (2) how do i set an inlet in the middle of the foam? (3) how do i visualize is such that it is like a mold filling animation?

thanks so much in advance.

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Old   December 16, 2005, 08:18
Default Re: injection into foam
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Rui
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(1): You have answered this with your question (3) (2): You may create a thin subdomain and set a source of water (3): You may define an isosurface of water volume fraction = 0.5 , or an isovolume of water volume fraction >= 0.5 . The tutorails show how to create animations.

Regards,

Rui
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Old   December 17, 2005, 00:12
Default Re: injection into foam
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jemteo
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Rui should i be using a muliphase flow? having air and water as my fluids?
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Old   December 17, 2005, 03:57
Default Re: injection into foam
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jemteo
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rui,

still not sure if it should be a transient or steady flow simulation.

basically i'll need to see how the water flows thru the porous foam after certain time. i could use a physical timescale with steady state? i followed Tutorial15 of CFX on multiphase modeling as a test.

can i use transient? any tutorial to recommend for this?

txs

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Old   December 17, 2005, 04:20
Default Re: injection into foam
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jemteo
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sorry found this after posting http://www.cfd-online.com/Forum/cfx_...cgi?read=11391

for those interested.
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