A 2D Example : 2D Pipe Junction


Contents:  Geometry & boundary regions  |  The mesh  |  Results with Fluent


      In this part we are going to try a very simple 2D exemple wich is a 2D pipe with a cylinder intersection. For this we use an hexaedric mesh and validate it with Fluent.



Geometry & boundary regions

      Here is the geometry:




      Concerning the boundary conditions, we have two inlets, one in the pipe and one in the cylinder and one inlet in the pipe.

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The mesh

        For the mesh, as we explain in the part called A quick overview of ICEM, the geometry is in a cube. This cube is divided into blocks, and these blocks are projected on the geometry:




      Finally the mesh is:

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Results with Fluent







      The velocity has been imposed on the two inlets, 1m/s for the cylinder and 5m/s for the pipe, the fluid is glycerin. Concerning the outlet, the pressure is imposed.

      Here are the results concerning the pression and the velocity magnitude:


 
 

      We did not encounter a lot of problems for this case except at first, it was impossible for Fluent to read our mesh, so we had to re-start it again.
      Problems we encountered in general are detailed in the part called Conclusion.

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