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Rajendra Prasad

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Everything posted by Rajendra Prasad

  1. Hi, I want to know about the leakage problem solution in optistruct. And the method to follow. Regards, Rajendra
  2. Hello, If in place of displacement, I want to apply velocity, acceleration, force, etc. Then what is the procedure? Regards Rajendra
  3. Hy, I want to know from where we should provide the displacement value, is it in SPCD only with different direction or in some other load type constraint. Regards, Rajendra
  4. Hello, Please specify the setup for imposed displacement calculation in Optistruct. Regards, raj
  5. Hello, In acufield view, is it not possible to "ON or OFF" many volume at single time. Every time I have to select single volume and make it OFF or ON. And in my product, there are nearlly 150 volume, which is taking huge time to ON or OFF. Please help. Regards Rajendra Borgwarner
  6. Hello, I want to show contour of temperature in such a way that. Temperature above certain specific limit should be transparent. Ex: If a component showing Temperature max & min is 300"C & 90"C. The contour is set from 100" to 90"C. So, temp above 90"C will show red in colour. But in place of red, I want transparent (Invisible or white). Simply I want to edit contour. And I don't know the procedure
  7. Hello Onkar, I want to open this file using Acu probe tool not as picture format (JPG or PNP format)
  8. Hello, Is it possible to save acuprobe after solve simillarly as result file we can save in .fv file format. Is there any format for acu probe to save after solve??
  9. Hello, What is Nodal initial condition (Dissipation rate value & kinetic value) for Realizable K-epsilon modal? Regards Rajendra Prasad Borg warner
  10. Where I can check the 512 mark is reached? How to check the Surface ourput reached 512 mark?
  11. Will you please send the .log & .inp file. And on which type of product you are working?
  12. Hello, I am getting an error while Pre solving in Acusolve. I am getting error i.e. acuPrep: *** ASSERTION in Function <iopGetFileLineCnt> File <iopFile.c> Line <1368> acuPrep: *** unable to open file <MESH.DIR/MM_2.5L_BS6_TempEff_220518_T1.ExhtGas_ShapedTube_6.tet4.Face_ExhtGas4_Side0.tri3.ebc>; Too many open files acuRun: *** ERROR: error occurred executing acuPrep Can any one tell me why this error is coming & how to sovle it. I have attached .log & .inp file. Please find it. MM_2.5L_BS6_TempEff_220518_T1.1.Log MM_2.5L_BS6_TempEff_220518_T1.inp
  13. Hello, I am doing FRF. I want to plot Stress vs frequency plot in hypergraph. But result for nodes above 10000 is not showing. Please help me. Regards Rajendra
  14. Hello, Modal analysis solve is taking huge time. My solve is running out of core. And it is taking lot of time. Please find below attached pic. Force_Motor_CD_CAE_31_Modal_T6.out
  15. Hello, I am working on automobile component i.e. EGR coolar. Here task is to Cool hot gas emitting out from engine and to send back to engine by using coolar i.e. ethylene glycol. EGR coolar has two fluid gas(hot air) & coolant(Ethylene glycol). Each fluid passing from 1 side. It may be parrallel or counter flow. I am getting inputs from customer like this, I am showing you 2 case as follows: CASE 1: Coolant flowing at 90"C @ 1200l/hr @ 2.5Bar-gauge Exhaust Gas at 450"C @ 150Kg/hr @ 2Bar-gauge CASE 2: Coolant flowing at 90"C @ 1200l/hr @ 2.5Bar-absolute Exhaust Gas at 450"C @ 150Kg/hr @ 2Bar-absolute Hence some time I am getting input value of pressure in bar or absolute. I am giving BC like this: At inlet I am defining pressure and temperature and at outlet negative flow I am giving. But I am not understanding how to value of pressure in gauge and absolute? Regards Rajendra BorgWarner Emissions System
  16. Hello, How to get gif animation in ACUFIELDVIEW I know how to form video in Acufieldview, but problem is video I am getting is in AVI. format. Then I am converting AVI. format to GIF and then preparing ppt. But while converting it, croping option is not there. Due to which ppt presentation is difficult. Is there, any another way where I get gif directly with crop option and with good clarity. Please help me. Regards Rajendra Borgwarner Emissions System
  17. I have open it. It is written that: *** WARNING: Surface 133715 of element BC "Int_BaffleInletSide_CircularTube_Side0 tri3 CorrugatedTube_1 tet4" is in the interior This surface share two component. And I have defined it as default wall. Is it correct or wrong.
  18. How to open ".bc_warnings". As every time while giving run, it is asking to check this file before moving further. Regards Rajendra BorgWarner
  19. 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.

     

    Regards

    Rajendra Prasad

    BorgWarner Emission System

    CorrugatedTube_T2.2.Log

    CorrugatedTube_T2.inp

  20. 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. Regards Rajendra Prasad BorgWarner Emission System CorrugatedTube_T2.2.Log CorrugatedTube_T2.inp
  21. 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.

    Capture1.PNG

    Capture2.PNG

    Capture3.PNG

  22. Thanks for reply vikas, 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. Load step Regards, Rajendra
  23. Hi sir, I am getting an error 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 ==== Please help me, as I am running out of time. Regards Rajendra Prasad Borgwarner
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