Savonius rotor simulation in matlab/simulink

In summary, the code and model were successful, but you ran into a difficulty with finding the Savonius Rotor model.
  • #1
Yogi@1989
3
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!
 
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  • #2
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.
 
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  • #3
code and simulink

hi there, please find the attached MATLAB code and simulink screen shot.




View attachment Savonew.m

sim.jpg
 
  • #4
can u show us the SIMULINK model please ! i need your Model...
 
  • #5
Hako_Algeria said:
Hi there,
I'm trying to simulate savonius and Darrieus rotors in simulink.
below is brief summary of how much i have done:-
1. I found Darrieus model
2. Darrieus MATLAB code done.
3. the simulation was great and successful
but...
1. I couldn't find Savonius model
2. I tried with a difficult one, i couldn't simulate that
please anyone can help about this problem

thank you
I am sorry but I have no model for the Savonius Rotor.
 
  • #6
Hako_Algeria said:
can u show us the SIMULINK model please ! i need your Model...
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 ??
 

Related to Savonius rotor simulation in matlab/simulink

1. What is a Savonius rotor and how does it work?

A Savonius rotor is a type of vertical axis wind turbine that converts wind energy into rotational motion. It consists of two or three curved blades attached to a central shaft. As wind flows over the curved blades, the difference in pressure between the concave and convex sides causes the rotor to rotate.

2. Why is simulation important for Savonius rotor design?

Simulation allows engineers to test and optimize the design of a Savonius rotor before building a physical prototype. This can save time and resources, as well as provide valuable insights into the performance of the rotor under different conditions.

3. What software is typically used for Savonius rotor simulation?

Matlab and Simulink are commonly used for Savonius rotor simulation due to their versatility and wide range of available tools and functions. Other software such as ANSYS CFD and OpenFOAM may also be used for more advanced simulations.

4. What factors are important to consider when simulating a Savonius rotor?

The design and dimensions of the rotor blades, the wind speed and direction, and the surrounding environment (such as buildings or terrain) are all important factors to consider in the simulation. Additionally, the type of simulation (e.g. steady-state or transient) and the accuracy of the models used will also affect the results.

5. How can simulation results be validated for accuracy?

Simulation results can be validated by comparing them to experimental data from physical prototypes or wind tunnel tests. Additionally, sensitivity analysis can be performed to determine the impact of different variables on the results and ensure that the simulation is accurately representing the behavior of a real Savonius rotor.

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