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-   -   Pressure Drop due to Friction (http://www.cfd-online.com/Forums/star-ccm/101268-pressure-drop-due-friction.html)

Sam0508 April 29, 2012 23:23

Pressure Drop due to Friction
 
Hi,
Let me Explain the conditions of problem.

Pipe 4mm, Air velocity 50m/s, Turbulent flow, Dy viscosity 1.79E-5 N.S/m2, Density of Air 1.23kg/m3.Need of finding the Pressure Drop for 0.1m length.

The Calculation value is 1.076kPa,but in STAR CCM+ got value as 1.255kPa.In software i specified the B.C as Inlet-Velocity inlet 50m/s and outlet-massflow outlet -7.539E-9 kg/s and mentioned Roughness Height also for account of friction factor.

In physics continuum..Constant density/Segregated flow/Steady state/K-Epsilon Turbulence.

Can u tell me what i did wrong in software? Thankyou

abdul099 April 30, 2012 02:48

Is your mesh fine enough? Try to refine it and have a look what happens.

Sam0508 May 2, 2012 02:04

Pressure drop due to friction
 
Quote:

Originally Posted by abdul099 (Post 358415)
Is your mesh fine enough? Try to refine it and have a look what happens.


Thankyou.let me try...


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