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Old   October 25, 2013, 06:22
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kim dong mi
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hi, I want to have advice.

I are compared theory, experiment, and analysis .

Model ; image "+ ~ +" Section, but only
L(length) : 58.6 mm
B(height) : 0.6mm
W(width) : 5.0mm
μ(viscosity) : 0.172 Pa*s
r(specific weight) : 1.118 g/cm3
Q(flow rate) : 3.7 g/s

http://blog.naver.com/ekfzha555

The resulting value of theory ;
Pe = 12μQL/(wB^3 )
= (12 ∗0.172 ∗3.7∗ 58.6)/(5 ∗ 〖0.6〗^3 ∗ 1.118∗〖10〗^(-3) )

= 3.7bar

The resulting value of experimental ; Pe = 3.7 bar

The resulting value of analysis CFX ; Pe = 2.68 bar

setting ;
Domain : fluid / Air -two component
Reference P. 1atm
Initialization : velocity 0 m/s
relative pressure 0atm
Volume fraction - fluid(0) / Air(1)

inlet : mass flow rate 3.7g/s
Volume fraction - fluid(1) / Air(0)

outlet : static pressure 0bar

wall : no slip

why is that ? 1bar difference ?

Last edited by ekfzha55; October 25, 2013 at 08:19.
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Old   October 25, 2013, 06:51
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Lance
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I have no idea what you are modeling, but:
Before you post a question please read this
http://www.cfd-online.com/Wiki/Ansys..._inaccurate.3F
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