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bubbleFoam validation case

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Old   August 19, 2010, 07:05
Default bubbleFoam validation case
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Balkrishna Patankar
Join Date: Mar 2009
Location: Pune
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I faced the following difficulty.
I switch off the dispersed phase volume fraction at inlet . That is inlet alpha = uniform 0 and also the dispersed phase velocity . I keep my continuous phase velocity Ub = 0.1 m/s . Continuous properties are rho = 1000 kg/m3 , nu = 1e-06 m2/s . This means now i am studying single phase flow . I compared the results to simpleFoam results and have found a problem with the velocity plots in the plane z=0.2 on the same timestep . Specifically on the line joining (0 0.5 0.2) and (1 0.5 0.2) . Can someone help me resolve this issue ....
My blockMeshDict is as follows :
Code:
/*--------------------------------*- C++ -*----------------------------------* \
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  1.7.0                                 |
|   \\  /    A nd           | Web:      www.OpenFOAM.com                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    object      blockMeshDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

convertToMeters 1;

vertices        
(
 (0 0 0)
 (0.25 0 0)
 (0.25 0.25 0)
 (0 0.25 0)
 (0 0.75 0)
 (0.25 0.75 0)
 (0 1 0)
 (0.25 1 0)
 (0.75 0 0)
 (0.75 0.25 0)
 (1 0 0)
 (1 0.25 0)
 (0.75 0.75 0)
 (1 0.75 0)
 (0.75 1 0)
 (1 1 0)

 (0 0 2)
 (0.25 0 2)
 (0.25 0.25 2)
 (0 0.25 2)
 (0 0.75 2)
 (0.25 0.75 2)
 (0 1 2)
 (0.25 1 2)
 (0.75 0 2)
 (0.75 0.25 2)
 (1 0 2)
 (1 0.25 2)
 (0.75 0.75 2)
 (1 0.75 2)
 (0.75 1 2)
 (1 1 2)
 
);

blocks          
(
 hex (0 1 2 3 16 17 18 19) (10 10 10) simpleGrading (1 1 1)
 hex (3 2 5 4 19 18 21 20) (10 10 10) simpleGrading (1 1 1)
 hex (4 5 7 6 20 21 23 22) (10 10 10) simpleGrading (1 1 1)
 hex (1 8 9 2 17 24 25 18) (10 10 10) simpleGrading (1 1 1)
 hex (2 9 12 5 18 25 28 21) (10 10 10) simpleGrading (1 1 1)
 hex (5 12 14 7 21 28 30 23) (10 10 10) simpleGrading (1 1 1)
 hex (8 10 11 9 24 26 27 25) (10 10 10) simpleGrading (1 1 1)
 hex (9 11 13 12 25 27 29 28) (10 10 10) simpleGrading (1 1 1)
 hex (12 13 15 14 28 29 31 30) (10 10 10) simpleGrading (1 1 1)
 );

edges           
(
);

patches         
(
 patch inlet (
	      (2 5 12 9)
	      ) 

 patch outlet (
	       (16 19 18 17)
	       (19 20 21 18)
	       (20 22 23 21)
	       (17 18 25 24)
	       (18 21 28 25)
	       (21 23 30 28)
	       (24 25 27 26)
	       (25 28 29 27)
	       (28 30 31 29)
	      
       	       )

   wall fixedWalls 
    (
     (0 16 19 3)
     (3 19 20 4)
     (4 20 22 6)
     (6 22 23 7)
     (7 23 30 14)
     (14 30 31 15)
     (15 31 29 13)
     (13 29 27 11)
     (11 27 26 10)
     (10 26 24 8)
     (8 24 17 1)
     (1 17 16 0)
     (0 3 2 1)
     (3 4 5 2)
     (4 6 7 5)
     (5 7 14 12)
     (12 14 15 13)
     (9 12 13 11)
     (8 9 11 10)
     (1 2 9 8)
     )


    
);

mergePatchPairs 
(
);

// ************************************************************************* //
The velocity plots are on this page .... https://sites.google.com/site/balkrishnanitt/
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