duplicate and mixed element types

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A

Hi!

I want to export a heatsink mesh file into fluent. According to the below pictures, a volume of fluid passes through a heatsink using a suction fan located inside the elbow duct.

The mesh was produced using automesh and solid map (line drag) for solid and fluid parts. Boundary conditions were defined as figs 1,2 and 3 shows. As figs 4 and 5 show, while I was exporting the final model to fluent, the error says that there is duplicate and mixed element types in my model. What can I do to fix this error and export my model successfully in the fluent?

looking forward to receive your kind help :)/emoticons/default_smile.png' srcset='/emoticons/smile@2x.png 2x' title=':)' width='20' />

<?xml version="1.0" encoding="UTF-8"?>1.JPG

<?xml version="1.0" encoding="UTF-8"?>2.JPG

<?xml version="1.0" encoding="UTF-8"?>3.JPG

<?xml version="1.0" encoding="UTF-8"?>4.JPG

<?xml version="1.0" encoding="UTF-8"?>5.JPG

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Answers

  • Q.Nguyen-Dai
    Q.Nguyen-Dai Altair Community Member
    edited February 2018

    Just delete 'duplicated elements', right?

    Tool => check elems => duplicates => save failed

    F2 => elems => retrieve => delete entity

  • Sanjay Nainani_20973
    Sanjay Nainani_20973 New Altair Community Member
    edited February 2018

    Hello,

     

    Duplicate elements can be found from 'Tools>>check elems'. There depending on 2D or 3D check for duplicates.

     

    <?xml version="1.0" encoding="UTF-8"?>image.thumb.png.dec1394d556590a987d40bc1121224e1.png

     

    Then click on save failed. Go to delete element (F2) and press on element and select retrieve and then delete these elements.

     

     

    For mixed elements please check again that you have assigned the correct property to the respective elements i.e. PSOLID to solid elements and PSHELL to shell elements.

     

    Thankyou

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited February 2018

    Hi! 

    Dear Q.Nguyen-Dai and Sanjay Nainani

    thanks for your help. When I click on duplicates>save failed>F2 , Hypermesh deletes the whole model, not the highlited elements.

    Furthermore, I need a more detailed solution for fixing mixed elements.

    Thank you again :)/emoticons/default_smile.png' srcset='/emoticons/smile@2x.png 2x' title=':)' width='20' />

  • Sanjay Nainani_20973
    Sanjay Nainani_20973 New Altair Community Member
    edited February 2018

    In the F2 panel you need to click on element and select 'Retrieve' and then delete the elements. Please refer the below picture:

    <?xml version="1.0" encoding="UTF-8"?>image.thumb.png.98856c31592e343678747017e1664294.png

     

    Can you give me more details about the mixed elements issue.

     

    Thankyou

  • Q.Nguyen-Dai
    Q.Nguyen-Dai Altair Community Member
    edited February 2018

    Hi! 

    Dear Q.Nguyen-Dai and Sanjay Nainani

    thanks for your help. When I click on duplicates>save failed>F2 , Hypermesh deletes the whole model, not the highlited elements.

    Furthermore, I need a more detailed solution for fixing mixed elements.

    Thank you again :)/emoticons/default_smile.png' srcset='/emoticons/smile@2x.png 2x' title=':)' width='20' />

     

    Read my post carefully please !

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited February 2018

    Thanks a lot. I deleted the duplicated elements. 

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited February 2018

    After I tried to export my model to fluent, it showed some errors like the following pictures. Please see the error report too.

    <?xml version="1.0" encoding="UTF-8"?>222.JPG

    <?xml version="1.0" encoding="UTF-8"?>333.JPG

    <?xml version="1.0" encoding="UTF-8"?>Capture.JPG

  • Q.Nguyen-Dai
    Q.Nguyen-Dai Altair Community Member
    edited February 2018

    I think you have to split your mesh into different components. Have a look at my example:

    cfd-0.png.908f6c643ac768cb5d61facc7d6b589d.png

     

    Here's the message for CFD Meshing:

    <?xml version="1.0" encoding="UTF-8"?>cfd-1.thumb.png.6a2595f58b95356615ddb15675a48143.png