Change angle of attack in 3D helicopter blades

simamul · July 28, 2020, 03:41

Hi all,
I am new in Ansys fluent. I am trying to simulate a rotor disk having 4 blades (NACA0012) rotating clockwise at RPM 800. Could you please suggest/teach me how can I change angle of attack of these blades in Ansys Fluent 19.2.
Appriciate your response.
Thanks
simamul

tbwake · July 31, 2020, 07:53

For these conditions (constant rpm and geometry) your angle of attack will be constant. Try using a rotating reference frame to simulate the blade motion and change the AoA in your CAD file. If you need dynamic AoA changes then you will need to look at the more complex dynamic mesh options.

July 28, 2020, 03:41	Change angle of attack in 3D helicopter blades	#1
simamul New Member lipu Join Date: Jun 2020 Posts: 1 Rep Power: 0	Hi all, I am new in Ansys fluent. I am trying to simulate a rotor disk having 4 blades (NACA0012) rotating clockwise at RPM 800. Could you please suggest/teach me how can I change angle of attack of these blades in Ansys Fluent 19.2. Appriciate your response. Thanks simamul

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Using a field function in changing the pitch angle of helicopter blades	Donegalstevie	Siemens	0	June 26, 2014 09:27
dynamicMeshDict, angle of attack as output	alendedeic	OpenFOAM Post-Processing	1	May 12, 2014 06:36
convegence problem with high angle of attack	littlelz	CFX	2	October 28, 2009 06:07
helicopter blades	cfd-star	Main CFD Forum	1	May 23, 2004 14:24
helicopter blades	cfd-star	FLUENT	0	May 21, 2004 06:06

July 31, 2020, 07:53		#2
tbwake New Member New South Wales Join Date: Feb 2016 Posts: 9 Rep Power: 10	For these conditions (constant rpm and geometry) your angle of attack will be constant. Try using a rotating reference frame to simulate the blade motion and change the AoA in your CAD file. If you need dynamic AoA changes then you will need to look at the more complex dynamic mesh options.