CFD Online Logo CFD Online URL
Home > Forums > Special Topics > Mesh Generation & Pre-Processing

airfoil edge via spline in OpenFOAM v6

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

LinkBack Thread Tools Search this Thread Display Modes
Old   November 26, 2018, 05:19
Default airfoil edge via spline in OpenFOAM v6
New Member
Joris Kampman
Join Date: Nov 2018
Location: Hengelo, The Netherlands
Posts: 4
Rep Power: 7
jkampman is on a distinguished road

I've recently started in OpenFOAM to generate via blockMesh a mesh surrounding an airfoil (or airfoil-like shape, since it is a windturbine blade crosssection in fact). In my opinion there are three ways in which in blockMeshDict an airfoil shape can be defined

1. full spline

When defining the edges of an airfoil in OpenFOAM v6, I was thinking about using a 'spline' edge type. The airfoil is defined by 51 xy-points, and thus a spline can be created nicely. I can thus create the entire airfoil with a single spline edge (starting and ending at the trailing edge)

However, I would like the airfoil edge to be broken into section so I can create nice blocks defined by vertices. In case of a single spline edge, only the trailing edge is (maybe twice, I do not know) defined.

2. set of section splines

I can also split the airfoil in N (7 or 8) sections/parts, and make N splines. However, if one of the sections starts/ends at the leading edge. The spline will probably not model the curvature of this edge very nicely. Thus I could ensure that the leading edge is no spline 'knot', but this sounds like a work-around, and not a proper solution.

3. a lot of points

A third option would be to define all interpolated vertices after having created them with matlab or python and make straight line edges between those interpolation vertices. However, this appear tricky mathwise and is by definition sub-optimal.

My question is the following:

Q1: which option is the best in your opinion and why?
Q2: Is is possible to use method 1 and add vertices separately? (I think this would be the preferred option if possible)

kind regards
jkampman is offline   Reply With Quote


airfoil, blockmesh, mesh, openfoam, spline

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
how to set periodic boundary conditions Ganesh FLUENT 15 November 18, 2020 06:09
Ffd_control_point_2d feiyi SU2 4 September 30, 2019 12:42
OpenFOAM Training, London, Chicago, Munich, Houston 2016-2017 OpenFOAM Announcements from Other Sources 0 September 14, 2016 03:19
[DesignModeler] 3mm Trailing edge radius on closed airfoil henrikdahlberg ANSYS Meshing & Geometry 1 June 10, 2015 05:04
Poor Residuals at Intersection Between Symmetry Plane and Airfoil Leading Edge TWaung CFX 2 February 16, 2010 08:11

All times are GMT -4. The time now is 22:37.