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

Wrong result of NACA0012 for 10 angle of attack

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

Reply
 
LinkBack Thread Tools Display Modes
Old   June 27, 2016, 05:56
Default Wrong result of NACA0012 for 10 angle of attack
  #1
New Member
 
Jacky
Join Date: Jun 2016
Posts: 1
Rep Power: 0
dragonercfd is on a distinguished road
Hi ,everyone,
I am newer for CFD,doing the simulation of NACA0012 for 10 deg angle of attack. But I always do not get correct result. All the procedure are followed by the Youtube. The following are the parameters of setting.
1 Density: 1.225kg/s
2 Viscosity Coefficient : 1.8375E-05 kg/(m*s)
3 Character Length: 1.0m
4 Velocity: 90m/s
5 Reynold number: 6.0E+06
6 Y+: 1.0
7 Wall adjacent distance: 4e-3mm
8 Total grid number: 180,000
9 Spalart-Allmaras model and K-Omega-SST turbulent model
10 Boundary conditions: Velocity inlet/Outflow/Symmetry/Wall

I must use velocity inlet boundary in order to add some velocity fluctuation on it. So I can not use the compressible solver. The iteration step has been reached up to 145000, but the flow field also is divergence and the result is not unstable. I am afraid that I have set the fault parameters or conditions.
Attached file is my case and Cp and Cf distributions along the lower wall. The result is wrong clearly. If you are available, please help me check it. Thanks very much.
My email is iamdragoner@gmail.com

Best Wishes

Jacky
dragonercfd is offline   Reply With Quote

Old   August 13, 2016, 04:45
Default
  #2
Far
Super Moderator
 
Sijal
Join Date: Mar 2009
Location: Islamabad
Posts: 4,314
Blog Entries: 6
Rep Power: 43
Far will become famous soon enoughFar will become famous soon enough
Send a message via Skype™ to Far
hi

Were you able to solve your problem?
Far 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
udf error srihari FLUENT 1 October 31, 2016 15:18
how to find the angle of attack in the wind turbine blade lin-lynn STAR-CCM+ 3 March 17, 2015 05:34
[CFX,ICEM] Simulation of wing / airfoil profile - pyramid elements, angle of attack Jonas_mm ANSYS 2 November 4, 2011 04:26
Problem with airflow over naca0012 and angle o f attack Lucas OpenFOAM Running, Solving & CFD 2 February 18, 2011 14:13
a serious problem on a case with attack angle anne CFX 0 November 18, 2008 06:28


All times are GMT -4. The time now is 09:16.