Fluids

Fluids

Facing problem in simulating Combustion in ANSYS IC Engine Fluent

    • adholpure
      Subscriber

      I am working on the project of Modelling of Combustion Process of Internal Combustion Diesel Engine Using Ansys ICE Fluent, in Which I am facing problem to obtain the Desired Result.


      My Objective: To plot Graph between Crank angle and Cylinder Pressure of IC Engine


      Problem: The output Report which is given by the Ansys ICE Fluent after simulation does not have the correct plot.


      I want to obtain the Pressure vs Crank angle plot (figure2) but the obtain report contains flow time v/s time steps plot(figure1) in place of Pressure v/s Crank angle and still, after a number of simulation and data modification the obtain report does not have the desired plot.


      Figure1 (flow time v/s Time steps plot)


      Figure 2 (PRESSURE V/S CRANK ANGLE)




       
    • Rob
      Ansys Employee

      I don't use the IC tools, but check what you're monitoring in the reports. 

    • adholpure
      Subscriber

      I am trying to obtain the Plot between Pressure inside the IC Engine Cylinder and Its Crank Angle.


      I am using the Combustion simulation part of the ICE fluent.


      But I unable to identify the problem or Mistake in my simulation setup which creates the wrong plot.


      I also take the reference from here https://www.sharcnet.ca/Software/Ansys/17.2/en-us/help/wb_icom/wb_icom.html 

    • Rob
      Ansys Employee

      Can you screen grab the report set-up? 

    • adholpure
      Subscriber

      Thank for replying sir, I am very grateful to you


      This is the screenshots of my Setup parameter which is mention in the report.





      Sir, please inform me, if any other data which is required to easily understand my problem and suggest the appropriate solution.

    • Rob
      Ansys Employee

      Is there a panel where you set up the graph? 

    • adholpure
      Subscriber

      To obtain the output plot we have to define the various monitors definition in ICE fluent. But most of the time the Monitors definition setting is already defined. I am also using the Default Monitors Definition Setting. 



      I have also done some manipulations in this Monitor Definition, But still, the result is not satisfactory.

    • Rob
      Ansys Employee

      And if you can put up one of the reports (use edit) so I can see that? 

    • adholpure
      Subscriber

      I am attaching one of the reports which are automatically generated by the Ansys after completing the simulation.


      As the simulation setup is showing up to 1000 number of time step but I run it only for 20 to 10 number of step, just to check whether I am getting the write result. But as I mention above the plots are not correct

    • Rob
      Ansys Employee

      I can't see anything, and please remember I also can't open attachments. 

    • adholpure
      Subscriber

      Sir, Sorry for the inconvenience, I am attaching the google drive link of the Ansys report which I mentioned above. 


      link :https://drive.google.com/drive/u/2/folders/1yMs7VBFKstZfpZfdYlmriDwTmHZHH9FV

    • Rob
      Ansys Employee

      I still can't open attachments. 

    • adholpure
      Subscriber

      Sir, 


      Can you please give your email id, so that I can share this file.

    • Rob
      Ansys Employee

      No, you must put all images on here. 

    • adholpure
      Subscriber

      This is images(screenshots) of the report file pages. 




    • Rob
      Ansys Employee

      Check how you've defined Chart 6: how does it differ from the others? And I need the INPUT settings for the various charts, otherwise I'm guessing what you set. 

    • adholpure
      Subscriber

      for explaining one by one, 


       I have found some videos on youtube Which is same as my project work. I also follow the same steps as mentioned in these videos.


      These videos are of very short duration.


      part 1:


      part 2: 


      part3: 


      part4: 


      part5: 


      part6: 

    • Rob
      Ansys Employee

      Open up the panel where you define the monitors and show me what the settings are. As some of the graphs seem to plot crank angle v something it's odd that others don't. Check each monitor carefully and post the set-up panel. 

    • adholpure
      Subscriber

      Even after doing everything the same every step same which is shown in the above-mentioned videos, the resulting plots are a straight line(which is wrong). But in the videos they got the right plot, I cant understand how


      I do everything the same, but my results differ, How ?????

    • adholpure
      Subscriber

      I think some steps are missing in the videos or some data which is useful for obtaining the right result.


       

    • Rob
      Ansys Employee

      Possibly, but as some of your results make sense, and some plot crank v time I'd go through and check your settings. 

    • adholpure
      Subscriber

      So, Sir, What can I do 


      if you need some more information from my side, I will ready to provide you

    • Rob
      Ansys Employee

      Look in the settings for one of the graphs that's not working: ie how did you define the axis? 

    • adholpure
      Subscriber

      hello sir,


      sorry for the late reply 


      After too much searching, I identified my problem


      I need these files (tut_comb_sect.x_t, injection-profile, Diesel_1comp_35sp_chem.inp,


      and Diesel_1comp_35sp_therm.dat) to run my set up.


      Sir, please send these files. 


      I am very grateful to you.


       

    • Rob
      Ansys Employee

      These will be included in either the tutorials that come with the software or on the Training Hub. You should have the former, and the latter can be downloaded with a subscription: I don't have copies (and can't share files either). 

    • adholpure
      Subscriber

      ok thanks sir 


       

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