# Turbine simulation

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 March 21, 2013, 02:17 Turbine simulation #1 New Member   Ivan Telnov Join Date: Dec 2011 Posts: 15 Rep Power: 5 Hi I am trying to simulate a simple hydroturbine (2D) and I have some basic questions about it: 1) In this case turbine rotated by water and i don't know even approximately turbine's rate of rotation. So first goal of my simulation is to define it. From forum i know that there are few ways to solve such problem but i've not found any tutorials or help topic or some recomendations. Can somebody help me, maybe by posting links or etc? 2 ) Is it correct, when i want to define turbine's rate of rotation in the first simulation and then simulated a process with fixed number of revolution of turbine? look forward to your help!

 March 21, 2013, 05:26 #2 Member   Thiagu Join Date: Oct 2012 Location: India Posts: 59 Rep Power: 4 Good Attempt, I appreciate your way thinking started from real physical aspect. To can get an idea about CFD modeling of flow in compressor /turbine. Pls check CFX Turotial-4. Flow in an Axial Rotor/Stator

March 21, 2013, 07:10
#3
New Member

Ivan Telnov
Join Date: Dec 2011
Posts: 15
Rep Power: 5
Quote:
 Originally Posted by jthiakz Good Attempt, I appreciate your way thinking started from real physical aspect. To can get an idea about CFD modeling of flow in compressor /turbine. Pls check CFX Turotial-4. Flow in an Axial Rotor/Stator
Thanks for the reply!

how i know, using this tutorial we should specify a rate of rotation. But I don't know this parametre and my goal is to define it

 March 21, 2013, 07:28 #4 Senior Member   OJ Join Date: Apr 2012 Location: United Kindom Posts: 475 Rep Power: 11 Well, since it's a turbine, isn't its rotational speed something an effect, rather than a cause? How about simulating a transient simulation by defining water flow rate etc and letting the software find it out? It would be a motion simulation though, and hence tricky. OJ

March 21, 2013, 07:39
#5
New Member

Ivan Telnov
Join Date: Dec 2011
Posts: 15
Rep Power: 5
Quote:
 Originally Posted by oj.bulmer Well, since it's a turbine, isn't its rotational speed something an effect, rather than a cause? How about simulating a transient simulation by defining water flow rate etc and letting the software find it out? It would be a motion simulation though, and hence tricky. OJ
I think it's a right way! but i don't know how simulate such transient simulation...

 March 21, 2013, 08:19 #6 New Member   Ivan Telnov Join Date: Dec 2011 Posts: 15 Rep Power: 5 And if we use another way - assume a speed and work out the torque. Sweep over a range of speeds and find the point where torque equals the output load (c) ghorrocks -http://www.cfd-online.com/Forums/cfx/87150-wind-turbine-rotation-baldes.html How find the point, where torque equals the output load?

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