0

TMVOC

flow.inp flow.out INCON MESH

Hello everyone. I want to learn something about TMVOC from everyone.When I was simulating the initial groundwater flow using TMVOC, the simulation results showed that gas disappeared and was generated in many grid cells. I suspect that there might be a problem with the initial conditions I set, but I have always been confused about how to reasonably set the initial conditions for the boundary grids of the study area. In addition, from multiple simulation trials, I also found that the results of the initial water flow affect the subsequent leakage of pollutants. Has anyone encountered this situation? I would like to express my sincere thanks in advance.

4 replies

null
    • kenny
    • 2 wk ago
    • Reported - view

    You did not provide initial condition for the elements that gas evolved in the INCON. These elements will take the default values as their initial condition. The default initial condition is:

    1.010e5              0.9E-5                25.0

    And it is in single aqueous water with dissolved air in it.

    The specified pressure is lower than the gas appearing pressure (Psat+pgas) which leads to gas phase evolves. 

     You should set the initial conditions for the boundary elements according to the real situation. 

      • navy_station
      • 12 days ago
      • Reported - view

      @kenny 

      Dear kenny 

      After following your advice, the large-scale generation and disappearance of grid gases have indeed been greatly reduced. However, when I proceeded to the next step of pollutant leakage, I found that using the SAVE file from the previous step as the initial condition, the point source I set did not take effect. I realize that the problem may lie in my input file, but I am not sure exactly where the issue occurs. I hope to receive your reply.

      1111
      • kenny
      • 12 days ago
      • Reported - view

       You have source/sink terms for pollutant at element "014 3", but hese element does not exist in the MESH. 

    • navy_station
    • 2 wk ago
    • Reported - view

    Dear Kenny

    Thank you very much for your help. I have modified the initial conditions of the other meshes based on your suggestions and am currently debugging the model. I hope I can continue to communicate with you in the future.

    Best regards.

Login to reply

Content aside

  • 12 days agoLast active
  • 4Replies
  • 25Views
  • 2 Following