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Home Forums OpenFOAM Forum drag is decrising

  • Srinivas K

    Member
    April 24, 2023 at 8:23 am

    I Have calculated the coefficient of drag and coefficient of lift.

    I have calculated the sum of pressure force and viscus forces in x-direction as a drag and in z-direction as a lift.

    lift is increasing as angle of attack increases but drag is decreasing as angle of attack increases.

    my boundary conditions are as follows

     

  • Srinivas K

    Member
    April 24, 2023 at 8:37 am

  • Srinivas K

    Member
    April 24, 2023 at 8:38 am

  • Srinivas K

    Member
    April 24, 2023 at 8:39 am

  • Srinivas K

    Member
    April 24, 2023 at 8:39 am

  • Barış Bicer

    Moderator
    April 24, 2023 at 8:16 pm

    so ?????

    What do you wanna us to do?

  • Srinivas K

    Member
    April 25, 2023 at 6:39 am

    I did this validation case in ansys, I got the results.
    I want to learn openFoam. where I am wrong I want to know.

  • Srinivas K

    Member
    April 26, 2023 at 12:06 pm

    hello sir where I am wrong?

  • Barış Bicer

    Moderator
    April 27, 2023 at 7:52 pm

    Srinivas,

    How can I know with very limited information why drag is decreasing? In this forum, we answer the questions related to course ok? sometimes ı help you but please consider that there is no any information here that help to find problem?

    I dont know your mesh, ı dont know your stability, ı dont your geometry, ı dont know what did you do in ansys? what are the differences in the set up? Do you have all these information?

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