Thermal Analysis, heat flux value

Mathilde.L
Mathilde.L Altair Community Member
edited May 20 in Community Q&A

Hi Everybody!

I was doing the OS-T: 1080 Coupled Lineat Heat Transfer/Structure Analysis tutorial and I have question about the heat flux value. This is this step:

 

They say at the point 7 that we have to enter the value 1.0, but they do not precise what it is. Do you know if it is a temperature and if so, which unit? Or this is something else?

Thank you in advance :)

Mathilde

 

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Best Answer

  • Adriano A. Koga
    Adriano A. Koga
    Altair Employee
    edited April 2021 Answer ✓

    This is heat flux (energy per area). Please search at OptiStruct help for QBDY1. If your model is in SI, then it would be W/m2. You apply this heat flux into a conduction surface, meaning you're adding that amount of heat through this particular surface.

    image

    QBDY1

    Bulk Data EntryDefines a uniform heat flux for CHBDYE elements.

    1. QBDY1 entries must be selected with the Case Control command LOAD=SID in order to be used in static analysis. The total power into an element is given by the equation:(1)
      Pin=(Effective_Area)*Q0Pin=(Effective_Area)*Q0
    2. This card is represented as a flux load in HyperMesh.

     

    image

Answers

  • Adriano A. Koga
    Adriano A. Koga
    Altair Employee
    edited April 2021 Answer ✓

    This is heat flux (energy per area). Please search at OptiStruct help for QBDY1. If your model is in SI, then it would be W/m2. You apply this heat flux into a conduction surface, meaning you're adding that amount of heat through this particular surface.

    image

    QBDY1

    Bulk Data EntryDefines a uniform heat flux for CHBDYE elements.

    1. QBDY1 entries must be selected with the Case Control command LOAD=SID in order to be used in static analysis. The total power into an element is given by the equation:(1)
      Pin=(Effective_Area)*Q0Pin=(Effective_Area)*Q0
    2. This card is represented as a flux load in HyperMesh.

     

    image

  • Mathilde.L
    Mathilde.L Altair Community Member
    edited April 2021
    Adriano A. Koga_21884 said:

    This is heat flux (energy per area). Please search at OptiStruct help for QBDY1. If your model is in SI, then it would be W/m2. You apply this heat flux into a conduction surface, meaning you're adding that amount of heat through this particular surface.

    image

    QBDY1

    Bulk Data EntryDefines a uniform heat flux for CHBDYE elements.

    1. QBDY1 entries must be selected with the Case Control command LOAD=SID in order to be used in static analysis. The total power into an element is given by the equation:(1)
      Pin=(Effective_Area)*Q0Pin=(Effective_Area)*Q0
    2. This card is represented as a flux load in HyperMesh.

     

    image

    Okay thank you very much for your quick answer !

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