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[Ataollah Nateghi <question648215@xxxxxxxxxxxxxxxxxxxxx>]

New question #648215 on Yade:
https://answers.launchpad.net/yade/+question/648215

Hello
I am trying to apply very simplified rotational resistance approach proposed by Teufelsbaure in my model. In this approach I am trying to multiply the angular velocity of each particle in all directions by a constant coefficient (something close to 0.99) in each iteration. 

w(i+1)x,y,z=A*w(i)x,y,z           A=0.99  

I am trying to use RotationEnigne however, I am wondering how can assign  rotational velocity of a particle from last iteration to it.(Do you think RotationEngine works or I should use another way?)
If it works should I use separate RotationEnigne for each direction or I can apply all in one?
By the way I am very new Python user.
Thanks in advance
Ataollah

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