Wind turbine simulation

asoltoon · August 26, 2013, 07:31

Hi dear experts,

I am going to simulate a mini horizontal axis wind turbine with Ansys CFX. The analysis will be both aerodynamic and structural.(two way FSI) my problem is that I do not know about the aerodynamic configuration of this problem. I doubt about the settings of the two domains(stationary and rotating). how should be the BCs?
another problem is definition of angular velocity of rotating domain , as the wind turbine rotates due to the linear wind speed that passes through the rotor blades. how should I define the angular velocity?

any further guideline is appreciated.

thanks in advance.

Ali

asoltoon · August 28, 2013, 01:33

any opinion is helpful, please write your suggestions....

regards

ghorrocks · August 28, 2013, 02:56

What are you doing the FSI for? Is the structure deforming or is this to get the device operation speed?

asoltoon · August 28, 2013, 05:13

hi ghorrocks,

I wanna simulate both aerodynamic effects and deformations in the structure due to the wind speed. both the rotor rotational speed and deformation of the structure is important for me.

best regards

ghorrocks · August 28, 2013, 07:35

There is a lot of new stuff for blade flutter in turbomachinery in CFX V15. A beta version is currently available. Talk to CFX support about access to it.

asoltoon · August 28, 2013, 08:13

Thank you Glenn for the reply,

But what about the setup configuration for rotating blade, the boundary conditions, domains, etc.?

ghorrocks · August 28, 2013, 08:18

Ignoring the FSI - Rotating blades are just straight forward rotating machinery, the boundary conditions don't sound any different to the usual and the domains are elementary. There are tutorials and best practises guides which show how all this is done.

But adding deformation will make it much more complex. The new blade flutter stuff looks relevant, so I strongly recommend you look at getting the new beta CFX V15.

August 26, 2013, 07:31	Wind turbine simulation	#1
asoltoon Member Ali Khalifesoltani Join Date: Mar 2011 Location: Esfahan, Iran Posts: 56 Rep Power: 15	Hi dear experts, I am going to simulate a mini horizontal axis wind turbine with Ansys CFX. The analysis will be both aerodynamic and structural.(two way FSI) my problem is that I do not know about the aerodynamic configuration of this problem. I doubt about the settings of the two domains(stationary and rotating). how should be the BCs? another problem is definition of angular velocity of rotating domain , as the wind turbine rotates due to the linear wind speed that passes through the rotor blades. how should I define the angular velocity? any further guideline is appreciated. thanks in advance. Ali Last edited by asoltoon; August 27, 2013 at 05:09.

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August 28, 2013, 01:33		#2
asoltoon Member Ali Khalifesoltani Join Date: Mar 2011 Location: Esfahan, Iran Posts: 56 Rep Power: 15	any opinion is helpful, please write your suggestions.... regards

August 28, 2013, 02:56		#3
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,870 Rep Power: 144	What are you doing the FSI for? Is the structure deforming or is this to get the device operation speed?

August 28, 2013, 05:13		#4
asoltoon Member Ali Khalifesoltani Join Date: Mar 2011 Location: Esfahan, Iran Posts: 56 Rep Power: 15	hi ghorrocks, I wanna simulate both aerodynamic effects and deformations in the structure due to the wind speed. both the rotor rotational speed and deformation of the structure is important for me. best regards

August 28, 2013, 07:35		#5
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,870 Rep Power: 144	There is a lot of new stuff for blade flutter in turbomachinery in CFX V15. A beta version is currently available. Talk to CFX support about access to it.

August 28, 2013, 08:13		#6
asoltoon Member Ali Khalifesoltani Join Date: Mar 2011 Location: Esfahan, Iran Posts: 56 Rep Power: 15	Thank you Glenn for the reply, But what about the setup configuration for rotating blade, the boundary conditions, domains, etc.?

August 28, 2013, 08:18		#7
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,870 Rep Power: 144	Ignoring the FSI - Rotating blades are just straight forward rotating machinery, the boundary conditions don't sound any different to the usual and the domains are elementary. There are tutorials and best practises guides which show how all this is done. But adding deformation will make it much more complex. The new blade flutter stuff looks relevant, so I strongly recommend you look at getting the new beta CFX V15.