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How does Fluent get results of PP_FLOW_RATE(p) from UDF?

- October 14, 2021 at 2:52 pm
  
  cs_zy
  Subscriber
- October 15, 2021 at 3:13 pm
  
  Karthik Remella
  Administrator
  
  Hello What do you mean by returned to Fluent? Can you elaborate a bit more about the end objective of your code so we may be able to help here?
  In the above code, it is being estimated using the macro 'reaction_rate'.
  Karthik
- October 16, 2021 at 2:28 am
  
  cs_zy
  Subscriber
  
  Respected sir 1.I want to realize that the particle mass Flow Rate changes with time, but the Total Flow Rate can only be filled in as a constant. How does the above code realize that the Total Flow Rate varies with time? My code looks like this, but it has an error when compiling.
  
  2.How does PP_FLOW_RATE relate to Total Flow Rate? It's defined by the user when they write the code, not defined before in the dpm.h file, right?
  I know such as C_V(c, t) and PP_CELL(p),they are macros defined in .h file.
  3.And I would appreciate it if you could tell me what's wrong with my code.
- October 18, 2021 at 3:02 pm
  
  Rob
  Forum Moderator
  
  Read the macro definition carefully. The PP_FLOW_RATE (assuming it's the correct macro) will overwrite what is in the panel.

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