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Rajendra Prasad

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Status Updates posted by Rajendra Prasad

  1. I am facing problem with boudary layer.

    When I am not maintaining BLs result is converging easily but showing wrong result. Only55 to 60% accuracy I am getting.

    When I am maintaining BL, result is not converging. The values are fluctuating so much,

    Actually modal is EGR coolar and has two flow i.e. coolant & Exhaust gas.

    In first trail, I solved with no BL, I got 60% accuracy. I got result trendy at very low time step 60, and I solved it for ten days till TS 1000, but result was same. There is no change.


    In 2nd trail, I am solving with BL at wall seperating coolant & gas. But here, result I am not getting trendy atleast. 300 TS, already completed, still no result.


    Solver is also very slow. Taking too much time. For each TS it is taking nearlly 20mins.


    I have attached inp & log file please find it.

    Please do needful as I wasted nearlly 1 month on it.



    Rajendra Prasad

    BorgWarner Emission System



  2. Hi sir,

    I am getting an error 2094 while solving FRF analysis, i.e.



    *** ERROR # 2094 ***
     EXCITEID on RLOAD2 # 9 data references follower force or nonexistent
     DAREA/static loading with ID # 4.


     There were 2 error messages during input processing.
      The first message is repeated below:

      *** ERROR # 2094 ***
      EXCITEID on RLOAD2 # 9 data references follower force or nonexistent
      DAREA/static loading with ID # 4.


     ==== End of solver screen output ====

     ==== Job completed ====


    inputs are

    Freq range: 50 to 500Hz.

    Gravity: 2G

    Damping: 2% & 4%( 2 simulations)


    Loads I applied are

    At the place of constraint, SPCD loads are also applied in all 3 dimention( towards specified dirc, 9810 N/mm2, load is applied).

    Tabled1 is applied, range of freq 50 to 500Hz & gravity 2G is applied

    Tabdamp is applied for damping i.e 2%

    RLoad2 applied to merge SPCD load and Tabled.

    Please help me, as I am running out of time.




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