Hypermesh cfd help

Sai Raghava Pathuri
Sai Raghava Pathuri Altair Community Member
edited March 23 in Community Q&A

I am working on reinforced carbon composites and want to study volumetric flow rate at outlet. I am new to hypermesh cfd software and since my structure doesnt have closed contours as shown below, I dont understand how to generate a solid mesh for flow study. Can anyone help me with it . I am using hypermesh cfd 2023 version.

I want to use inlet(o pa)  and outlet (1 pa)  in z - direction faces , symmetry in y -direction faces and wall with no slip boundary conditions for the coloured solid structures.

image

Best Answer

  • acupro
    acupro
    Altair Employee
    edited March 23 Answer ✓

    Thank you for the suggestion . I've followed https://www.youtube.com/watch?v=IcsYyBT8kG4 to get basic idea and used patch surface option in surface tool to generate closed surface but failed. I am attaching my cad model here. I would also like to know if there can be any changes to be done with cad model as well. Can you please help me with it !!!

    Thank you in advance .

    Attaching an example screen recording of using the Box creation, Boolean (with Keep Common Interface) and Split tools to quickly generate the fluid volume.  The Boolean cuts the existing solids from the newly-created box, then the Split tool trims the excess from what is to be the Fluid volume.

Answers

  • ydigit
    ydigit
    Altair Employee
    edited March 22

    You would need to use of the tools in HyperMesh CFD to construct additional surfaces, so that you have a closed volume for fluid. 

    Push or Pull Surfaces (altair.com)

    Extend Surfaces (altair.com)

    Repair Surfaces (altair.com)

    Simplify Region (altair.com)

    This might help:

    HMCFD-T: 1000 Basic Geometry Editing (altair.com)

    If you upload you CAD, it might be possible for someone to create a short video to show the process.

  • Sai Raghava Pathuri
    Sai Raghava Pathuri Altair Community Member
    edited March 22

    Thank you for the suggestion . I've followed https://www.youtube.com/watch?v=IcsYyBT8kG4 to get basic idea and used patch surface option in surface tool to generate closed surface but failed. I am attaching my cad model here. I would also like to know if there can be any changes to be done with cad model as well. Can you please help me with it !!!

    Thank you in advance .

  • acupro
    acupro
    Altair Employee
    edited March 22

    Thank you for the suggestion . I've followed https://www.youtube.com/watch?v=IcsYyBT8kG4 to get basic idea and used patch surface option in surface tool to generate closed surface but failed. I am attaching my cad model here. I would also like to know if there can be any changes to be done with cad model as well. Can you please help me with it !!!

    Thank you in advance .

    The other option would be to create the CAD model in your geometry engine - such that the solid body actually represents the fluid volume (with the solids as cutouts/voids) rather than the solid volumes.

  • acupro
    acupro
    Altair Employee
    edited March 23 Answer ✓

    Thank you for the suggestion . I've followed https://www.youtube.com/watch?v=IcsYyBT8kG4 to get basic idea and used patch surface option in surface tool to generate closed surface but failed. I am attaching my cad model here. I would also like to know if there can be any changes to be done with cad model as well. Can you please help me with it !!!

    Thank you in advance .

    Attaching an example screen recording of using the Box creation, Boolean (with Keep Common Interface) and Split tools to quickly generate the fluid volume.  The Boolean cuts the existing solids from the newly-created box, then the Split tool trims the excess from what is to be the Fluid volume.

  • Sai Raghava Pathuri
    Sai Raghava Pathuri Altair Community Member
    edited March 23

    Attaching an example screen recording of using the Box creation, Boolean (with Keep Common Interface) and Split tools to quickly generate the fluid volume.  The Boolean cuts the existing solids from the newly-created box, then the Split tool trims the excess from what is to be the Fluid volume.

    Thank you so much for your help !!