Upon executing the script, a Tk GUI opens and prompts the user to specify the 4-Series designation and select from either sharp or blunt trailing edge options. For example, a NACA 2412 has a maximum camber of 2% of the chord located at 40% of the chord with a maximum thickness of 12% of the chord located at 30% of the chord. And the last two digits represent the maximum thickness at 30% chord. The second digit represents the maximum camber location. The first number represents the maximum camber of the airfoil in percent chord. No more downloading coordinates and converting them to our segment file format prior to import.įor those unfamiliar with NACA 4-Series airfoils, they are created from a mean camber line and thickness distribution defined using four digits. This script creates the popular NACA 4-Series geometries right within Pointwise. While it’s relatively easy to dig up airfoil coordinates online, it’s much easier to have a script that can generate the geometry. The very first script I wrote eventually became AirfoilGenerator.glf, the topic of this article. The process was so repeatable that once I had learned Glyph I immediately began scripting the airfoil meshing process, the first step of which, was to generate the airfoil geometry. One of the first grids I generated was an O-Grid for an airfoil. It was 2008 when I began as a summer intern at Pointwise.
0 Comments
Leave a Reply. |