Difference between revisions of "Main ContribExamples/OscillatingFixedValue"

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(New page: Searching the tutorials I couldn't find an example of how to use this type of boundary condition, so I've created a very small and simple tutorial. Basically, the setup requires the defini...)
 
Line 7: Line 7:
 
         refValue        uniform (1 0 0);
 
         refValue        uniform (1 0 0);
 
     }
 
     }
The above setup enables to specify a boundary condition for an entire patch that varies in time as:
+
The above setup enables to specify a velocity boundary condition for an entire patch that varies in time as:
  
 
     <math>1+amplitude\cdot\sin\left(2\pi\cdot frequency\cdot t\right)</math>
 
     <math>1+amplitude\cdot\sin\left(2\pi\cdot frequency\cdot t\right)</math>

Revision as of 13:46, 17 March 2009

Searching the tutorials I couldn't find an example of how to use this type of boundary condition, so I've created a very small and simple tutorial. Basically, the setup requires the definition of 4 parameters:

   inlet
   {
       type oscillatingFixedValue;
       amplitude       0.5;
       frequency       0.2;
       refValue        uniform (1 0 0);
   }

The above setup enables to specify a velocity boundary condition for an entire patch that varies in time as:

   1+amplitude\cdot\sin\left(2\pi\cdot frequency\cdot t\right)

Unsteady Velocity Field

Sample OpenFOAM case - it applies to Valid versions: OF version 15.png