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

Lift coefficient with my 2.5D airfoil model never matches the experimental data.

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   November 27, 2014, 10:42
Default Lift coefficient with my 2.5D airfoil model never matches the experimental data.
  #1
New Member
 
Teagyoung Kim
Join Date: Nov 2014
Posts: 4
Rep Power: 12
ktgfeel is on a distinguished road
Hi all

I have a problem in simulating 2.5 d airfoil particularly in lift coefficient.

I'm doing fluent to simulate Airfoil naca 4412 in water-liquid medium.

I have following conditions.

Mesh : ICEM unstructured mesh, C-H grid(L=3.85m,H=1.8m,T=0.4m) ( 3d from 2d by extrusion)
AOA : 7 degree
velocity : 4.5 m/s
length of chord : 0.3 m
Reynolds Number : About 1.2*e6
steady : k-w sst (2nd order)
reference values : Area =0.12 m^2 length =0.3 m and all others are on default settings)

I currently get lift coefficient something like 0.8.
Before the extrusion to 2.5D in z-axis, i used to get around 1.15, which was very close to the experiment references.

My guessing is
1. wrong mesh.
2. wrong input for the reference values in fluent
3. just not right to expect correct simulation with 2.5d

HELP. and as it is a thread, any discussions with replies would be very helpful for me.
ktgfeel is offline   Reply With Quote

Old   December 15, 2014, 13:58
Default Naca airfoil - cfx and fluent
  #2
New Member
 
Ivanrips's Avatar
 
Roger Iván
Join Date: Jun 2009
Location: Perú
Posts: 22
Rep Power: 17
Ivanrips is on a distinguished road
Hi my friend;

Here send two tutorials in CFX and Fluent, you can change material.
Regards

ANSYS CFX

Part 1
https://www.youtube.com/watch?v=ngNZdyWTUIo

Part 2
https://www.youtube.com/watch?v=QBcJubC6LEI

Part 3
https://www.youtube.com/watch?v=6RvLtWr07uE

Part 4
https://www.youtube.com/watch?v=2lhkyt9eV4g

ANSYS FLUENT

Part 1
https://www.youtube.com/watch?v=UVMXAT1NU0Q

Part 2
https://www.youtube.com/watch?v=cUkjdWw27oM

Part 3
https://www.youtube.com/watch?v=AoexYY8EPZA

Part 4
https://www.youtube.com/watch?v=WrqwX1GQfeg

Part 5
https://www.youtube.com/watch?v=e5i7YMA5lWQ
Ivanrips is offline   Reply With Quote

Reply

Tags
2.5d simulation, airfoil 3d, fluent, icem, lift coefficient

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
Comparison of experimental and CFD results for the VA-2 supercritical airfoil Aurélien FLUENT 3 April 24, 2024 11:39
Data Produced From Fine Marine Cant Match with The Experimental Data PeiSan Fidelity CFD 4 August 23, 2014 06:33
Question about heat transfer coefficient setting for CFX Anna Tian CFX 1 June 16, 2013 07:28
airfoil lift and drag coefficient amir_14 FLUENT 5 January 1, 2013 09:30
RAE2822 - experimental lift coefficient pc Main CFD Forum 8 October 26, 2006 11:47


All times are GMT -4. The time now is 08:52.