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How to define cylindricalInletVelocity 0 folder for a hollow cylinder?

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Old   August 23, 2017, 16:31
Post How to define cylindricalInletVelocity 0 folder for a hollow cylinder?
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Joaquin Del Pino
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Hello everyone,

I need to define the velocity inlet in my project. I'm simulating a biofilter.
The geometry of the biofilter is a hollow cylinder with thousands of pores. I create an STL with all the "covers" of each pore and now I need to define the velocity in radial axis.

I try to define velocity ,but only show me in one direction or axis (images attached)

Code:
                                                 boundaryField 
{ 
  ...
 
    inlet_lecho 
    { 
    type                  cylindricalInletVelocity; 
    axis                  (0 1 0); 
    centre               (0 0 0); 
    axialVelocity      constant 0; 
    radialVelocity     constant -0.134; 
    rpm                    constant 0; 
    value                  uniform (0 0 0); 
    //type                 surfaceNormalFixedValue; 
    //refValue           uniform -1.817;  

    }     
 
    outlet_lecho 
    { 
        
    type                     cylindricalInletVelocity; 
    axis                     (0 1 0); 
    centre                  (0 0 0); 
    axialVelocity         constant 0; 
    radialVelocity        constant -0.134; 
    rpm                      constant 0; 
    value                    uniform (0 0 0); 
    // type                   surfaceNormalFixedValue; 
    // refValue             uniform -1.817;  
  
    }     

....
I really appreciate your answer, I need to make the velocity goes inward the cylinder

Regards!
Attached Images
File Type: jpg pores_.jpg (126.7 KB, 15 views)
File Type: jpg pores2_.jpg (124.0 KB, 11 views)
File Type: jpg arrows_.jpg (132.1 KB, 13 views)
File Type: jpg arrows2_.jpg (113.9 KB, 8 views)

Last edited by joaquindelpino; August 23, 2017 at 18:13.
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