CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Analysis of a Model Aircraft

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

LinkBack Thread Tools Display Modes
Old   February 17, 2015, 11:38
Default Analysis of a Model Aircraft
New Member
Join Date: Feb 2015
Posts: 1
Rep Power: 0
GusRus is on a distinguished road

Newbie post. My project involves a CFD analysis of a model aircraft. I have generated the model in SolidWorks by using 3 view drawings and have been able to import the geometry into Fluent and then created a box in ANSYS geometry editor and berformed the boolean operations. For an idea of size the model of the aircraft has about a 200mm wingspan and the enclosure box representing the wind tunnel is 460mmX460mm square. I am currently having problems generating a mesh in the model. Below are my current settings.

Physics Preference: CFD
Solver Preference: Fluent

Use Advanced Size Function: On:Proximity
Relevance Center: Coarse
Initial Size Seed: Active Assembly
Smoothing: Medium
Transition: Slow
Span Angle Center: Medium
Proximity Accuracy:0
Num Cells Across Gap: Default (0)
Proximity Min Size: 2mm
Max Face Size: 5mm
Max Size: 10mm
Growth Rate: Default
Minimum Edge Length 1.7556e-002 mm

Use Automatic Inflation: All Faces In Chosen Named Selection
Named Selection: Bugatti100 (Aircraft I have modelled)
Inflation Option: Smooth Transition
Transition Ratio: 0.272
Maximum Layers: 3
Growth Rate: 1
Inflation Algorithm: Pre

Assembly Meshing
Method: None

Patch Conforming Options
Triangle Surface Mesher: Program Controlled

Shape Checking: CFD
Element Midside Nodes: Dropped
Straight Sided Elements: [Blank]
Number of Retries: 0
Extra Retries for Assembly: Yes
Rigid Body Behaviour: Dimensionally Reduced
Mesh Morphing: Disabled

Pinch Tolerance: Default (1.8mm)
Generate Pinch on Refresh: No
Automatic Mesh Based on Defeaturing: On
Defeaturing Tolerance: Default (1mm)

Nodes: 628473
Elements: 3430625

The error message I currently get is:-
Inflation Created Stairstep Mesh at Some Locations

Any help on refining my settings to obtain a mesh that is suitable for analysis is much appreciated.
GusRus is offline   Reply With Quote


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
Finding Lift/Drag/Moment Coefficients on 3D model aircraft EVBUCF OpenFOAM Running, Solving & CFD 12 August 7, 2013 16:22
Can fluent model aircraft icing promble? Doris FLUENT 14 December 22, 2012 05:16
[ANSYS Meshing] 3D Meshing for CFD analysis of aircraft nauman55 ANSYS Meshing & Geometry 0 July 25, 2012 14:15
setting up premixed model for NOx analysis perdita FLUENT 0 November 23, 2010 10:15
Aircraft model? Jason FLUENT 0 December 7, 2004 14:59

All times are GMT -4. The time now is 04:51.