Wind Turbine Air Flow Analysis

NightHawkRaven · January 23, 2014, 14:24

Hello,
I'm trying to model the air flow pattern around a wind turbine using ANSYS Fluent. Can anybody list out a few tutorials for beginners in this regard ?

Thanks
Night Hawk Raven

blackmask · January 23, 2014, 21:32

It depends.
If you want to study the aerodynamic properties of the blade, you could use the MOVING FRAME technique.
To study the wind turbine wake, you could replace the turbine array by PRESSURE JUMP or POROUS MEDIA.
If you want to study the details of the near wake of a turbine, you probably need to use the SLIDING MESH. It is time consuming because you need to do transient analysis for a long time ( several turbine rotation periods). You need a solid answer for "why should I do it" before you start this one.

like.no.other · January 25, 2014, 04:28

Hi
You can study this tutorial in ANSYS FLUENT:
Using Moving Reference Frames and Sliding Meshes

This example have two strategies:
Part 1: steady-state solver, defining the motion using Moving Reference Frames (MRF)
Part 2: transient manner, moving the mesh using Sliding Meshes

NightHawkRaven · January 29, 2014, 15:45

Hi blackmask,
Which of these methods would be more appropriate or closely match the idea of simulating the air flow pattern ?

blackmask · January 29, 2014, 21:10

Wind tunnel experiments more or less lay emphasis on near wake pattern. When they talk about flow pattern, most of the time they are describing tip/root vortex. Wind resource assessment on the other hand always concerns about the mutual influences of wake on wind turbine array. Flow pattern in this regard means wake expansion, wake mixing, wake merging, etc.

January 23, 2014, 14:24	Wind Turbine Air Flow Analysis	#1
NightHawkRaven New Member Join Date: Jan 2014 Location: Houston, Texas Posts: 6 Rep Power: 12	Hello, I'm trying to model the air flow pattern around a wind turbine using ANSYS Fluent. Can anybody list out a few tutorials for beginners in this regard ? Thanks Night Hawk Raven

January 23, 2014, 21:32		#2
blackmask Senior Member Join Date: Aug 2011 Posts: 421 Blog Entries: 1 Rep Power: 22	It depends. If you want to study the aerodynamic properties of the blade, you could use the MOVING FRAME technique. To study the wind turbine wake, you could replace the turbine array by PRESSURE JUMP or POROUS MEDIA. If you want to study the details of the near wake of a turbine, you probably need to use the SLIDING MESH. It is time consuming because you need to do transient analysis for a long time ( several turbine rotation periods). You need a solid answer for "why should I do it" before you start this one. flotus1 likes this.

January 25, 2014, 04:28		#3
like.no.other Member like.no.other Join Date: Sep 2011 Posts: 35 Rep Power: 15	Hi You can study this tutorial in ANSYS FLUENT: Using Moving Reference Frames and Sliding Meshes This example have two strategies: Part 1: steady-state solver, defining the motion using Moving Reference Frames (MRF) Part 2: transient manner, moving the mesh using Sliding Meshes __________________ www.CFDiran.ir

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
fluent analysis of wind turbine	er_ijaz	FLUENT	0	May 1, 2013 05:55
Vertical Axis Wind Turbine	atorninc	Main CFD Forum	3	March 6, 2013 05:38
Unsteady flow over a savonius wind turbine	Robyfood	Siemens	9	March 14, 2012 10:41
Tutorial related to flow analysis of Hydro turbine	Sanjay Jain	FLUENT	0	April 10, 2008 10:09
radial turbine flow analysis	ME	Siemens	1	August 16, 2007 04:06

January 29, 2014, 15:45		#4
NightHawkRaven New Member Join Date: Jan 2014 Location: Houston, Texas Posts: 6 Rep Power: 12	Hi blackmask, Which of these methods would be more appropriate or closely match the idea of simulating the air flow pattern ?

January 29, 2014, 21:10		#5
blackmask Senior Member Join Date: Aug 2011 Posts: 421 Blog Entries: 1 Rep Power: 22	Wind tunnel experiments more or less lay emphasis on near wake pattern. When they talk about flow pattern, most of the time they are describing tip/root vortex. Wind resource assessment on the other hand always concerns about the mutual influences of wake on wind turbine array. Flow pattern in this regard means wake expansion, wake mixing, wake merging, etc.