Pressure drop across pipe

mnolan93 · December 15, 2014, 08:04

Hi there,

I'm relatively new to CFD and i'm trying to model a laminar air-flow through a pipe and calculate the pressure drop across the pipe to validate the CFD results.

The only thing is, how do I actually obtain the pressure values at the outlet? I used 'contours of total pressure' but it just shows up as all red apart from a lower pressure boundary layer at the pipe walls - so it just looks like there is no pressure loss at all.

Thanks for any help

mnolan93 · December 15, 2014, 08:26

I have just found the use of plots, and I can plot the total pressure of the flow along the centerline of my axisymmetric model. only thing is The pressure increases from 7.21 Pascals to 7.25 Pascals along the pipe. Shouldn't the pressure decrease?

Thanks

December 15, 2014, 08:04	Pressure drop across pipe	#1
mnolan93 Member Martin Nolan Join Date: Dec 2014 Posts: 33 Rep Power: 12	Hi there, I'm relatively new to CFD and i'm trying to model a laminar air-flow through a pipe and calculate the pressure drop across the pipe to validate the CFD results. The only thing is, how do I actually obtain the pressure values at the outlet? I used 'contours of total pressure' but it just shows up as all red apart from a lower pressure boundary layer at the pipe walls - so it just looks like there is no pressure loss at all. Thanks for any help

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December 15, 2014, 08:26		#2
mnolan93 Member Martin Nolan Join Date: Dec 2014 Posts: 33 Rep Power: 12	I have just found the use of plots, and I can plot the total pressure of the flow along the centerline of my axisymmetric model. only thing is The pressure increases from 7.21 Pascals to 7.25 Pascals along the pipe. Shouldn't the pressure decrease? Thanks