Register Blogs Members List Search Today's Posts Mark Forums Read

 April 18, 2007, 05:24 Pressure Drop - Please Help - Simple Pipe Flow #1 Joe A. Guest   Posts: n/a Sponsored Links In modeling incompressible air flow in 3D through a section of pipe, how would you correctly determine the pressure drop between the inlet and outlet??? Would you use: Difference in Static or Total Pressure Values? Secondly, how would you obtain these values at the inlet and outlet (i.e. surface integral using area-weighted-average, mass-weighted-average, facet-average, etc.)? Lastly, I am given the mass flow rate at the inlet boundary to this pipe section and that it is incompressible air flow....the point again is to determine the pressure drop across this section of pipe.....FLUENT manual suggests using Velocity Inlet and Pressure Outlet, but could I get away with using: (Mass-Flow-Inlet with Outflow-Outlet) or (Mass-Flow-Inlet with Pressure-Outlet static pressure set to zero)??? Do I have to use periodic conditions at inlet and outlet to get fully developed profiles first??? Any help, comments, or suggestions in regards to any of the above questions is GREATLY appreciated! Thanks for your time! Joe

 April 19, 2007, 12:37 Re: Pressure Drop - Please Help - Simple Pipe Flow #2 FUMI Guest   Posts: n/a I think "pressure drop" you meant is head loss which usually implies decrease in total pressure. Text book of Anderson about Fluid have a good explanation about this.

 April 23, 2007, 07:50 Re: Pressure Drop - Please Help - Simple Pipe Flow #3 Joe A. Guest   Posts: n/a thanks

 Thread Tools Display Modes Linear Mode

 Posting Rules You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is OffTrackbacks are On Pingbacks are On Refbacks are On Forum Rules

 Similar Threads Thread Thread Starter Forum Replies Last Post sameer_kumar OpenFOAM 5 August 27, 2013 12:01 Vinod FLUENT 0 August 4, 2008 02:43 Ning FLUENT 2 March 11, 2007 14:23 shekharc Main CFD Forum 4 May 9, 2005 09:21 HB &DS CFX 0 January 9, 2000 14:19