Time frequency of /TFILE and /ANIM/DT is not fixed

gslee
gslee New Altair Community Member
edited October 2020 in Community Q&A

Hi,

 

TFLIE and ANIM/DT setting are as follows.

image.png.44e8712087bb68cb9e204a30b91c9967.pngimage.png.f201eff123f1e9f11498881a2004f380.png

 

Time frequency of time history data and animation is as follows.

image.png.b293ba3c9424a94b70cd46278b356ae5.png

Time frequency of time history data and animation is same but is not same as setting.

 

How can I fix the time frequency of the time history?

 

Thanks

 

 

 

 

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Answers

  • Andy_20955
    Andy_20955 New Altair Community Member
    edited August 2019

    Hi,

    I think time history and animation output is done at the closest timestep to the output time request time.  Thus it won't be exact and usually is close enough.  Maybe if you forced your timestep to be 6.1035e-5 or a 1/2 or 1/3 etc. factor of that time then the output would be at the correct time.  Take a look at the /DTIX command to specify the time step.

     

    Thanks,

    Andy

  • gslee
    gslee New Altair Community Member
    edited August 2019

    Thank you so much.

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