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

Problem getting lift to drag ratio

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   July 10, 2018, 08:37
Unhappy Problem getting lift to drag ratio
  #1
New Member
 
Raghavendra S
Join Date: Jul 2018
Location: Mangalore
Posts: 1
Rep Power: 0
SRaghavendra is on a distinguished road
I am simulating flow field around SG6043 airfoil at 1,00,000 Reynolds number in FLUENT using unstructured mesh of grid size around 10 lakhs. I am using sphere of influence technique to generate finer mesh near airfoil surface. I am getting stall angle as 16 deg with cl_max of 1.1445 whereas xfoil is showing stall angle as 14 deg with cl_max of 1.6491. Also, in xfoil maximum (cl/cd) is occurring at +6 deg whereas numerical result is showing maximum (cl/cd) at -6 deg. Is this deviation acceptable? If not, how to improve the numerical results?
SRaghavendra is offline   Reply With Quote

Reply

Tags
lift and drag, numerical error, sphere of influence, stall angle, unstructured mesh

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
problem numerical results of lift and drag in airfoil simulation using fluent solver Mohammad1994 FLUENT 0 June 7, 2018 03:59
[ICEM] Aspect Ratio Problem thebuaa ANSYS Meshing & Geometry 4 March 14, 2018 16:10
Ratio between the frequency of Lift and Drag coefficinets Zeishan1994 STAR-CCM+ 0 January 14, 2017 15:50
lift and drag ceofficient problem icemaniac178 CFX 6 August 17, 2011 19:40
range of lift to drag ratio in airfiols chillaks Main CFD Forum 3 December 26, 2005 02:47


All times are GMT -4. The time now is 16:51.