CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > FLOW-3D

VAWT simulation

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

Reply
 
LinkBack Thread Tools Display Modes
Old   August 12, 2010, 23:44
Default VAWT simulation
  #1
New Member
 
freddie espinosa
Join Date: Aug 2010
Posts: 3
Rep Power: 6
kaje is on a distinguished road
Hi all,

I'm just new with Flow 3D software.

I want to know the following

How can we simulate a Vertical Axis Wind Turbine in open air? for example we have a 7 m/s wind speed, Can we compute the rotation of the Blade of the Rotor? and also the Torque?

What is the proper set-up of its Mesh Geometry, Boundary Condition, Initial, Physic and all other paramters?

Thanks in advance for you help
kaje is offline   Reply With Quote

Old   August 27, 2010, 00:14
Default
  #2
Senior Member
 
michael barkhudarov
Join Date: Mar 2009
Posts: 331
Rep Power: 9
MuxaB is on a distinguished road
i think this is doable, but may be a time-consuming simulation, especially if the turbine blades are thin compared to its span. I would define a mesh box around it, mesh it so that the geometry is well resolved and define a wind velocity at one boundary and pressure at all others. Turbulence will be important, gravity - not so much.

The turbine itself shall be modeled as a fixed-axis GMO component.
MuxaB is offline   Reply With Quote

Old   September 13, 2010, 01:16
Default
  #3
New Member
 
freddie espinosa
Join Date: Aug 2010
Posts: 3
Rep Power: 6
kaje is on a distinguished road
thanks for your reply, michael..

but i having a problem right now.. for there is still no movement on the blades..
kaje is offline   Reply With Quote

Old   September 14, 2010, 23:00
Default
  #4
Senior Member
 
michael barkhudarov
Join Date: Mar 2009
Posts: 331
Rep Power: 9
MuxaB is on a distinguished road
Quote:
Originally Posted by kaje View Post
thanks for your reply, michael..

but i having a problem right now.. for there is still no movement on the blades..
Are the blades represented by a prescribed-motion or coupled-motion GMO component? I presume it should be prescribed-motion, in which case it should be a fixed-axis rotation component with a predefined angular velocity, right?

There is an Example problem called GMO mixers in $F3D_HOME folder that has a simple but similar setup for two rotating GMO components.
MuxaB 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
Replacing mesh while running a simulation akultane CFX 1 November 15, 2009 14:46
FSI TWO-WAY SIMULATION Smagmon CFX 1 March 6, 2009 14:24
Continuous vs interrupted simulation sega OpenFOAM Running, Solving & CFD 4 November 3, 2008 15:29
Fire simulation using FDS from NIST Jens Main CFD Forum 1 January 22, 2004 02:53
3-D Contaminant Dispersal Simulation Apple L S Chan Main CFD Forum 1 December 23, 1998 11:06


All times are GMT -4. The time now is 20:58.