profiled inlet

Prabin Pradhananga_22497
Prabin Pradhananga_22497 Altair Community Member
edited May 22 in Community Q&A

Hello all,

 

I want to have a specific profiled velocity inlet using user function. Can you provide me with the sample UDF for the same? The profile I want to use is:

image

 

Thanks.

Tagged:

Best Answer

  • acupro
    acupro
    Altair Employee
    edited May 22 Answer ✓
    Prabin Pradhananga_20428 said:

    I found that the profile has to be the function of time using this method. image

     

    However, I want the following type of profile which is independent of time ie. it has to maintain the following profile all the time at the inlet. Is there any way this can be done?

    image

    In the HyperMesh CFD - it would be under Boundaries > Advanced.  Then use NBC (nodal boundary condition) and type = piecewise linear.  You can import a .csv file or input your values manually.  See the attached screen recording.

Answers

  • acupro
    acupro
    Altair Employee
    edited May 20

    You may find it simpler to define the function/profile in Excel or similar, then import the .csv file to use as a nodal boundary condition but with type = piecewise linear.

    You'll see an example UDF for nodal boundary condition towards the end of the following page.  Doesn't do exactly what you want, but may be useful as a guide.

    https://help.altair.com/hwcfdsolvers/acusolve/topics/acusolve/nodal_boundary_condition_acusolve_com_ref.htm

  • Prabin Pradhananga_22497
    Prabin Pradhananga_22497 Altair Community Member
    edited May 21
    acupro_21778 said:

    You may find it simpler to define the function/profile in Excel or similar, then import the .csv file to use as a nodal boundary condition but with type = piecewise linear.

    You'll see an example UDF for nodal boundary condition towards the end of the following page.  Doesn't do exactly what you want, but may be useful as a guide.

    https://help.altair.com/hwcfdsolvers/acusolve/topics/acusolve/nodal_boundary_condition_acusolve_com_ref.htm

    I found that the profile has to be the function of time using this method. image

     

    However, I want the following type of profile which is independent of time ie. it has to maintain the following profile all the time at the inlet. Is there any way this can be done?

    image

  • acupro
    acupro
    Altair Employee
    edited May 22 Answer ✓
    Prabin Pradhananga_20428 said:

    I found that the profile has to be the function of time using this method. image

     

    However, I want the following type of profile which is independent of time ie. it has to maintain the following profile all the time at the inlet. Is there any way this can be done?

    image

    In the HyperMesh CFD - it would be under Boundaries > Advanced.  Then use NBC (nodal boundary condition) and type = piecewise linear.  You can import a .csv file or input your values manually.  See the attached screen recording.

Categories