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Savonius rotor simulation in matlab/simulink

  1. Jul 31, 2014 #1
    hi there,
    i'm trying a to simulate a savonius rotor in simulink.
    below is brief summary of how much i have done:-
    1. derived the equations for torque.
    2. matlab code done.
    3. in simulink the equation i'm using to get the angular velocity and angular position is
    T = I*aplha
    the torque values are being stored in a matrix and being called in using a lookup table.

    4. the torque plot seems to be fine but once integrate it to get angular velocity and angular position, the results are not what should be getting.

    can someone please help me out!!
  2. jcsd
  3. Jul 31, 2014 #2


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    Science Advisor

    The Savonius Rotor is so inefficient that you may well not believe your correct results.
    Correctly modelling a SR should convince you that it is not worth building one.

    You have asked a specific question about a general or vague subject.
    If you do not post your equations and code it will be impossible to help you.
  4. Jul 31, 2014 #3
    code and simulink

    hi there, plz find the attached matlab code and simulink screen shot.

    View attachment Savonew.m

  5. Jun 4, 2015 #4
    can u show us the SIMULINK model please !! i need your Model.....
  6. Jun 4, 2015 #5


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    Science Advisor

    I am sorry but I have no model for the Savonius Rotor.
  7. Sep 23, 2015 #6
    Hi Hako_Algeria,

    I have already attached the Simulink model and Matlab code in the earlier message.
    I also had a question for your simulation.
    How are you calculating the Coefficient of Power for the model. Do you keep the wind speed constant and then calculate Cp at each tip speed ratio value OR you vary the wind speed and calculate the Cp at the maximum power at each wind speed ??
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