Pressure Drop due to Friction -- CFD Online Discussion Forums

April 29, 2012, 23:23	Pressure Drop due to Friction	#1
Sam0508 New Member sam Join Date: Nov 2011 Posts: 25 Rep Power: 14	Hi, Let me Explain the conditions of problem. Pipe Ø4mm, 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 __________________ Regards, Sam

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