Discrete Inlet Velocity Profile

retech · December 4, 2007, 10:51

Hello all!

I would like to impose a velocity profile at the inflow boundary. My velocity profile is in the form of discrete values of the velocity magnitude at specific x, y, and z locations. What is the best way to impose this BC in OF 1.4.1?

Thanks for your time.

Joe

mattijs · December 4, 2007, 13:11

Have a look at timeVaryingMappedFixedValue b.c. which interpolates in space and time.

Tutorial in $FOAM_TUTORIALS/simpleFoam/pitzDailyExptInlet

Sources in $FOAM_SRC/finiteVolume/lnInclude/timeVaryingMappedFixedValueFvPatchField.C

retech · December 4, 2007, 13:46

Thanks, Mattijs! I think I see what to do.

Joe

braennstroem · September 9, 2008, 14:14

Hi,

does anyone know of a easy way to create those needed boundary field values from experimental data? I would like to impose a 2D velocity profile at the inlet, which are available in VTK format (some other format would be available as well by exporting the fields using visit).

Fabian

braennstroem · November 12, 2008, 06:20

just an info: I did the above using visit and the available spreadsheet operator...

December 4, 2007, 10:51	Hello all! I would like to	#1
retech New Member Joseph F Slomski Join Date: Mar 2009 Location: West Bethesda, MD, USA Posts: 8 Rep Power: 17	Hello all! I would like to impose a velocity profile at the inflow boundary. My velocity profile is in the form of discrete values of the velocity magnitude at specific x, y, and z locations. What is the best way to impose this BC in OF 1.4.1? Thanks for your time. Joe

December 4, 2007, 13:11	Have a look at timeVaryingMapp	#2
mattijs Senior Member Mattijs Janssens Join Date: Mar 2009 Posts: 1,419 Rep Power: 26	Have a look at timeVaryingMappedFixedValue b.c. which interpolates in space and time. Tutorial in $FOAM_TUTORIALS/simpleFoam/pitzDailyExptInlet Sources in $FOAM_SRC/finiteVolume/lnInclude/timeVaryingMappedFixedValueFvPatchField.C

December 4, 2007, 13:46	Thanks, Mattijs! I think I se	#3
retech New Member Joseph F Slomski Join Date: Mar 2009 Location: West Bethesda, MD, USA Posts: 8 Rep Power: 17	Thanks, Mattijs! I think I see what to do. Joe

September 9, 2008, 14:14	Hi, does anyone know of a e	#4
braennstroem Senior Member Fabian Braennstroem Join Date: Mar 2009 Posts: 407 Rep Power: 19	Hi, does anyone know of a easy way to create those needed boundary field values from experimental data? I would like to impose a 2D velocity profile at the inlet, which are available in VTK format (some other format would be available as well by exporting the fields using visit). Fabian

November 12, 2008, 06:20	just an info: I did the above	#5
braennstroem Senior Member Fabian Braennstroem Join Date: Mar 2009 Posts: 407 Rep Power: 19	just an info: I did the above using visit and the available spreadsheet operator...

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