How to determine the particle angles at (X,Y,Z)

Saeed Naamnh
Saeed Naamnh Altair Community Member
edited August 2022 in Community Q&A

Hi Colleagues, 

How can I determine the orientation angles (theta) of the particle at (x,y,z) in order to calculate the rotation matrix?

 

 

Best regards 

 

 

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Answers

  • RWood
    RWood
    Altair Employee
    edited August 2022

    Hi,

    I'm not sure I fully get what you're after, but if you want the angle (and axis) of rotation from a given orientation matrix (that EDEM provides) then I'd recommend a look at :

    https://en.wikipedia.org/wiki/Rotation_matrix

    specifically the section: "Conversion from rotation matrix to axis-angle"

    Richard

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