CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > FLUENT

angular velocity in vertical wind turbine

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Display Modes
Old   April 21, 2009, 03:56
Default angular velocity in vertical wind turbine
  #1
New Member
 
Join Date: Apr 2009
Posts: 6
Rep Power: 8
vanni is on a distinguished road
Hello guys,

I want to study a new wind turbine with vertical rotational axis.
I think, on the base of the shape of the rotor, that a sliding/dinamic mesh is necessary and I would like to start with a 2D simulation.

Obviously I donít know the rotational velocity of the rotor at a specific wind velocity.
I think that inertia forces can be neglected at the moment, but I have to take into account the torque end power necessary to generate electrical energy.

The question is how can I setup this simulation?
Can I relate the rotational velocity of the rotating mesh containing the rotor to the torque generated by the wind and to the torque for electrical energy generation? How can I do this? How can I make the flow to move the rotor?

Do you think that this approach is correct?

Thanks in advance
vanni
vanni is offline   Reply With Quote

Old   April 23, 2009, 02:44
Default
  #2
New Member
 
Join Date: Apr 2009
Posts: 6
Rep Power: 8
vanni is on a distinguished road
Then,

I think to this formulation for angular velocity ω that must be applied by UDF.

ω t = ωt-1 + [Maer t-1 - M res (ωt-1)] / Irotor * Δt

where:

Maer= torque calculated on rotor due to flow
Mres(
ω) = law for torque due to electrical energy power generation
Irotor = rotor Inertia

Do you agree?Vanni
vanni is offline   Reply With Quote

Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Wind turbine simulation Saturn CFX 34 October 16, 2014 05:27
Vertical axis wind turbine CFD Analysis Akhilesh FLUENT 4 April 13, 2012 16:44
Wind turbine simulation Saturn Main CFD Forum 1 June 12, 2006 03:57
Variables Definition in CFX Solver 5.6 R P CFX 2 October 26, 2004 02:13
Terrible Mistake In Fluid Dynamics History Abhi Main CFD Forum 12 July 8, 2002 09:11


All times are GMT -4. The time now is 01:13.