Fluids

Fluids

why porosity contour is not restricted just in porous zone?

    • Weiqiang Liu
      Subscriber

      Hi all,


      I posted a lot threads before to ask questions about a soot combustion project. Now I realized I have a lot of problems for the case. I am going to solve it one by one. 


      I defined a UDM to store porosity in the domain. After 0.1 s time step, I checked the distribution of porosity indicated as follows:



      I only set two zones as porous zone in my model. However, I noticed from the contour that porosity distribution is not restricted in just porous zones, distribution of porosity also extended to non-porous zones. This is absolutely unreasonable. 


      Can anybody give me some suggestions why this happens?


      Best regards.


      Weiqiang

    • Weiqiang Liu
      Subscriber

      by the way, I used interface boundary conditions for between different zones and UDS equation is only solved in porous zones.

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