CFD Online Discussion Forums - [swak4Foam] nonuniform "valueExpression" in groovyBC

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- - [swak4Foam] nonuniform "valueExpression" in groovyBC (https://www.cfd-online.com/Forums/openfoam-community-contributions/142871-nonuniform-valueexpression-groovybc.html)

nonuniform "valueExpression" in groovyBC

Dear foamers,
I want to put a groovyBC.I am trying to put a temperature boundary condition as initial temperature(time=0) is a nonuniform list of value and then it to change as "zeroGradient".
For that matter i have put it as follows;

Code:

type        groovyBC;

          valueExpression        "nonuniform List<scalar>

    100

    (

    565.739

    672.48

    723.233

    745.909

    760.789

    772.353

    782.215

    791.12

    799.475

    807.515

    815.367

    823.091

    830.699

    838.167

    845.449

    852.482

    859.198

    865.532

    871.431

    876.864

    881.819

    886.311

    890.374

    894.061

    897.434

    900.562

    903.516

    906.366

    909.178

    912.017

    914.941

    918.004

    921.256

    924.744

    928.51

    932.594

    937.035

    941.874

    947.155

    952.928

    959.255

    966.221

    973.935

    982.552

    992.288

    1003.43

    1016.38

    1031.63

    1049.74

    1071.33

    1096.91

    1126.78

    1160.77

    1198.15

    1237.6

    1277.39

    1315.64

    1350.62

    1381.02

    1406.15

    1426.01

    1441.18

    1452.58

    1461.25

    1468.06

    1473.72

    1478.75

    1483.48

    1488.15

    1492.91

    1497.86

    1503.04

    1508.48

    1514.19

    1520.16

    1526.36

    1532.76

    1539.32

    1546.01

    1552.77

    1559.55

    1566.3

    1572.96

    1579.51

    1585.87

    1592.08

    1598

    1603.84

    1609.27

    1614.87

    1619.74

    1625.42

    1629.46

    1636.02

    1638.3

    1647.8

    1645.39

    1663.67

    1648.38

    1698.51    )"

    ;

    gradientExpression    "0";

    fractionExpression    "(time() == 0) ? 1 : 0";

this gives the following error;

HTML Code:

--> FOAM FATAL IO ERROR: 

found '\n' while reading string "nonuniform List<scalar>..."



file: /home/thamali/OpenFOAM/thamali-2.2.2/run/tutorials/combustion/reactingFoam/latest/latestlatest/latestelatestlatest/1stcopy/0/T at line 29.



    From function ISstream::read(string&)

    in file db/IOstreams/Sstreams/ISstream.C at line 545.



FOAM exiting

So,I would like to know how to put this nonuniform "valueExpression" in groovyBC?
Using a data file or something like that?
Thanks a lot.
Thamali

Quote:

Originally Posted by Thamali (Post 513807)

Code:

type        groovyBC;

          valueExpression        "nonuniform List<scalar>

    100

    (

    565.739

<snip>

    1647.8

    1645.39

    1663.67

    1648.38

    1698.51    )"

    ;

    gradientExpression    "0";

    fractionExpression    "(time() == 0) ? 1 : 0";

this gives the following error;

HTML Code:

--> FOAM FATAL IO ERROR: 

found '\n' while reading string "nonuniform List<scalar>..."



file: /home/thamali/OpenFOAM/thamali-2.2.2/run/tutorials/combustion/reactingFoam/latest/latestlatest/latestelatestlatest/1stcopy/0/T at line 29.



    From function ISstream::read(string&)

    in file db/IOstreams/Sstreams/ISstream.C at line 545.



FOAM exiting

So,I would like to know how to put this nonuniform "valueExpression" in groovyBC?
Using a data file or something like that?
Thanks a lot.
Thamali

That is not possible in this way as this is not a valid groovyBC-expression and there is no way to set individual faces in groovyBC. In fact the pain purpose of groovyBC is to avoid this. Solution to get what you want depends on where you got the values from. If you calculated them by hand then you should be able to express them in an expression (no pun intended). If they are from some measurment then I'd suggest a lookup-table.

Dear Bernhard,
Thanks a lot for your prompt reply.I used an expression for the matter.
Regards,
Thamali