Turbulence Intensity Unit Clarification

brenton_101
brenton_101 Altair Community Member
edited October 2020 in Community Q&A

Hi,

 

I have a question regarding the Turbulence Intensity parameter that is located under the solver browser in Hypermesh 2019.1 (AcuSolve User Profile).

 

What are the units of this parameter? Is it represented as a percentage or ratio? (I've attached a screen snippet)

 

For example in AcuConsole GUI, the turbulence intensity parameter is input as a percentage (e.g 2.5 for 2.5% turbulence intensity).

 

Best regards

Brenton

 

 

<?xml version="1.0" encoding="UTF-8"?>Turbulence_intensity.PNG

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Answers

  • ydigit
    ydigit
    Altair Employee
    edited December 2019

    Here is the screenshot from the Altair_AcuSolve_2019.1_Training_Manual.pdf

     

    Hope this clarifies. 

     

    image.png

  • brenton_101
    brenton_101 Altair Community Member
    edited December 2019

    Hi Ydigit,

     

    The issue is not with the definition of turbulence intensity but that my turbulence intensity parameter may be out by a factor of 100.

     

    In AcuConsole, the parameter is called Percent Turbulence Intensity, so for this I would simply input a value of 5 corresponding to 5 percent.

     

    However in HM Solve Browser, the parameter is called Turbulence Intensity. So should I input a value of 5 or 0.05 to represent 5 percent?? 

     

    Hope this clears up any confusion.

     

     

  • ydigit
    ydigit
    Altair Employee
    edited December 2019

    oops, I understood the question incorrectly. 

     

    The default when creating a new inflow is 0.03. 

    So it is good to assume that 0.05 would be a good input in your case. Also if you would like to verify this, you can open the .INP file that HM will generate after export in a text editor. 

     

    image.png

     

    Hope this helps. 

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