CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > Siemens > STAR-CCM+

Spanwise Pressure Coefficient Distribution of Rotating Wind Turbine Blade

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   March 16, 2021, 05:51
Default Spanwise Pressure Coefficient Distribution of Rotating Wind Turbine Blade
  #1
New Member
 
Niall Whelan
Join Date: Mar 2020
Posts: 2
Rep Power: 0
niall54321 is on a distinguished road
Hi,

I'm currently working on a Star CCM+ model of the NREL Phase VI wind turbine for validating a VLM code.

I have everything complete and all reports and residuals converge well but I am trying to compare the pressure coefficient distribution at various span wise locations of the turbine blade from the CFD model to the experimental data. My problem is that the experimental data is normalised along the chord from zero to one and my CFD data is using [0 1 0] direction and as the leading edge of the blade isn't coincident with y=0 and the blade is twisted I am not able to properly compare the results.

How does one plot the pressure coefficient data against a direction that is from the leading edge to the trailing edge in Star CCM+ for a rotating twisted blade?

Thanks in advance!
Regards,
Niall
niall54321 is offline   Reply With Quote

Old   March 16, 2021, 08:40
Default
  #2
Senior Member
 
Matt
Join Date: Aug 2014
Posts: 861
Rep Power: 14
fluid23 is on a distinguished road
This request is not totally clear. Are you asking how to plot cp distribution around the airfoil shapes at different spanwise stations along the rotor?'

You can create derived parts (probes/lines) that snap to a surface that are defined in a local coordinate system. The help material is very useful in this regard.
fluid23 is offline   Reply With Quote

Old   March 16, 2021, 08:45
Default
  #3
New Member
 
Niall Whelan
Join Date: Mar 2020
Posts: 2
Rep Power: 0
niall54321 is on a distinguished road
Thanks for your reply!

Sorry if I am being unclear!

I have been successful in setting up the derived parts and the Cp plot however, when I plot the pressure distribution data in Star CCM+ the X-axis uses a vector direction of [0 1 0] which is not representative of a rotating twisted blade. I am looking to figure out how to set up the x axis of the x-y plot so that it is parallel with blade chord and that zero on the x-axis would align with the leading edge of the blade at a given span-wise location?

Hope this is clearer!
Thanks again!
niall54321 is offline   Reply With Quote

Old   March 16, 2021, 12:38
Default
  #4
Senior Member
 
Matt
Join Date: Aug 2014
Posts: 861
Rep Power: 14
fluid23 is on a distinguished road
Create a local coordinate system at each station that is aligned with the chord direction and centered at the leading edge. Then you can create field functions to define a normalized position (x/c, y/c, z/c) vector for each station that references the local coordinate system you created.
fluid23 is offline   Reply With Quote

Old   March 16, 2021, 12:39
Default
  #5
Senior Member
 
Matt
Join Date: Aug 2014
Posts: 861
Rep Power: 14
fluid23 is on a distinguished road
duplicate post deleted

Last edited by fluid23; March 16, 2021 at 12:41. Reason: duplicate post
fluid23 is offline   Reply With Quote

Reply

Tags
nrel phase 6, postprocessing, pressure distribution, star ccm+, wind turbines

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
[BladeModeler] Geometry and Meshing for Failure Analysis of Wind turbine blade Wajeeh ANSYS Meshing & Geometry 0 December 30, 2020 05:17
Pressure Coefficient with a Minima of 0 on Compressor Airfoils in Cascade cdelorenzo CFX 6 August 22, 2019 06:36
AutoGrid - Meshing wind turbine blade Ko_Shine NUMECA 4 December 20, 2018 11:27
Profile pressure distribution in wind turbine FJSJ FLUENT 0 September 7, 2013 08:26
FSI - Wind Turbine AUN CFX 13 August 29, 2012 16:44


All times are GMT -4. The time now is 15:16.