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TimeVaryingUniformFixedValue b.c.

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Old   November 28, 2011, 16:48
Default TimeVaryingUniformFixedValue b.c.
  #1
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Wei Ma
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Hi Guys,
I am trying to implement TimeVaryUniformFixedValue b.c to setup a temperature b.c. which changes linearly with time, like T=10+5*time()

in T/0
I wrote as:

front_heat_in
{
type timeVaryingUniformFixedValue;
timeDataFileName "test1.dat";
value uniform 0;
}

and the error came up:

--> FOAM FATAL IO ERROR:
keyword outOfBounds is undefined in dictionary "/home/merlin/OpenFOAM/merlin-1.7.1/run/tutorials/myFoam/ckaniso2D/0/T::boundaryField::front_heat_in"

file: /home/merlin/OpenFOAM/merlin-1.7.1/run/tutorials/myFoam/ckaniso2D/0/T::boundaryField::front_heat_in from line 33 to line 35.

From function dictionary::lookupEntry(const word&, bool, bool) const
in file db/dictionary/dictionary.C at line 395.

BTW, the time series, "test1.dat" was coded:

(
1 300
2 300
3 300
4 330
5 340
6 350
7 360
8 370
9 380
10 390
)

where the first column stands for time: 1sec, 2sec....
and the second column is temperature: 300k 300k 300k 330k ...

The purpose is pretty simple, but i am not familiar with this transient case,
please help me!

-Thank you in advance
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Old   November 28, 2011, 21:48
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David Gaden
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It's telling you that you are missing the keyword "outOfBounds" in the dictionary. I believe this is a setting that determines how it handles extrapolation to time values outside what is defined in your data. See here:
http://openfoamwiki.net/index.php/Op...rpolationTable
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Old   November 29, 2011, 16:36
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Wei Ma
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Quote:
Originally Posted by marupio View Post
It's telling you that you are missing the keyword "outOfBounds" in the dictionary. I believe this is a setting that determines how it handles extrapolation to time values outside what is defined in your data. See here:
http://openfoamwiki.net/index.php/Op...rpolationTable
Thank you buddy!
Appreciate that. It works well now after I added "outOfBounds warn;"
but still cant tell the necessity for this line

-merlin
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Old   October 1, 2013, 03:45
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Hale
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Hi everyone,

I want to apply the timeVaryingUniformFixedValue boundary condition to the outlet in such a way that the outlet is closed for the first 3 seconds then it is open (an inletOutlet b.c.) for the next 2 seconds and it continues like that.

Is it possible to apply derived boundary conditions (e.g. inletOutlet) in timeVaryingUniformFixedValue for the velocity?

Thanks
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