Change of flow area in summary planes

bjorn_fejer · February 11, 2013, 07:22

I would like to ask for help regarding my Simulation on CFD 2013, my problem was the flow area of summary planes is different from inlet to outlet even-though I used same inside diameter of pipe. I have tried to move the cut planes, still they are having different in flow area.

I have used water for incompressible fluid. My parameters is as follows
Inlet=10 Bar pressure
Outlet=6 m/s velocity

Thank you in advance.

Bjorn Fejer

marktm250xc · February 18, 2013, 18:36

The area calculated is based off of the mesh topology. It is not uncommon to very small errors, especially for a coarse mesh due to the faceting and some round-off error. Refining the mesh helps the accuracy, but based on your flow vectors, your mesh seems OK. It should not be as far off as you show.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Water subcooled boiling	Attesz	CFX	7	January 5, 2013 03:32
Flow Rate over general area	Lubos	OpenFOAM	0	April 2, 2011 05:53
Boundary Flow and Total Force Summary	amod_kumar	CFX	0	January 12, 2011 23:26
How to change from mass flow to volume flow rate	stanley	FLUENT	1	February 2, 2007 06:44
flow dimension change	susan	CFX	6	December 19, 2002 09:03

February 18, 2013, 18:36		#2
marktm250xc New Member Mark Decker Join Date: Jan 2013 Location: Central Virginia Posts: 21 Rep Power: 13	The area calculated is based off of the mesh topology. It is not uncommon to very small errors, especially for a coarse mesh due to the faceting and some round-off error. Refining the mesh helps the accuracy, but based on your flow vectors, your mesh seems OK. It should not be as far off as you show.