Uploaded November 2017 | Updated September 2026, 2 weeks ago
In this video, we will create a rectangular, structure mesh that can be used in a CFD simulation. This is also called a transfinite mesh. In this particular video, we will be sticking with a simple rectangle defined by 4 points, defining a single zone. In my next video, we will add an extra point along one of the sides so that we can change the grid density along that side (see video below).
If you're interested in how to use this mesh in a CFD simulation, stay tuned for some future videos.
===== GMSH AND SU2 =====
→ gmsh.info
→ su2code.github.io
===== RELEVANT VIDEOS =====
→ Gmsh: Unstructured Rectangular
goo.gl/5cqz5f
→ Gmsh: Structured (Transfinite) Rectangular Double Zone
goo.gl/RAebxS
===== NOTES =====
► For this video, I was using version 2.13.2
► The newest stable version is currently 3.0.6, and may behave slightly differently than seen in this video
===== REFERENCES =====
► Tutorial by Matthew MacLean
In this video, we will create a rectangular, structure mesh that can be used in a CFD simulation. This is also called a transfinite mesh. In this particular video, we will be sticking with a simple rectangle defined by 4 points, defining a single zone. In my next video, we will add an extra point along one of the sides so that we can change the grid density along that side (see video below).
If you're interested in how to use this mesh in a CFD simulation, stay tuned for some future videos.
===== GMSH AND SU2 =====
→ gmsh.info
→ su2code.github.io
===== RELEVANT VIDEOS =====
→ Gmsh: Unstructured Rectangular
goo.gl/5cqz5f
→ Gmsh: Structured (Transfinite) Rectangular Double Zone
goo.gl/RAebxS
===== NOTES =====
► For this video, I was using version 2.13.2
► The newest stable version is currently 3.0.6, and may behave slightly differently than seen in this video
===== REFERENCES =====
► Tutorial by Matthew MacLean
![Explained: Linspace [MATLAB]](https://i.ytimg.com/vi/PA4hJy48eJw/mqdefault.jpg "Explained: Linspace [MATLAB]
In this video I show you how to use the linspace function in MATLAB to easily create arrays.")
![Explained: NACA 4-Digit Airfoil MATLAB Code [Airplanes]](https://i.ytimg.com/vi/QezOan1pVgs/mqdefault.jpg "Explained: NACA 4-Digit Airfoil MATLAB Code [Airplanes]
This video goes through a step-by-step description of the coding of a program to calculate the coordinates of a NACA 4-digit airfoil.
If you would like to know where the equations come from, please see my previous video, located here:
http://goo.gl/FcufZh
To download a GUI I made from this code, visit my GitHub linked to here:
https://github.com/jte0419/NACA_4_Digit_Airfoil")
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In this video I show how I personally set up a MATLAB script before I begin any coding. The title of the code can be more descriptive than the actual name of the file. I like to include who wrote the code. This isnt necessarily important if youre the only one accessing your code, but if you write code in a framework with other people, this helps indicate who actually started the file.
The started and updated dates are important, especially if you have multiple versions of the code (e.g. Code_v1.m and Code_v2.m) because it will help you keep track of changes. I have (dated) notebooks in which I derive the math behind some of my codes, so I can easily compare last update of the code with my notes from that day.
Commenting your code is extremely important! Dont neglect to comment just because you think youll remember what you did. If you write enough code, you WILL forget why you wrote something the way you did, and comments help tremendously.
Code folding and selective execution (using ctrl+enter) can be very convenient when you want to run just a single section of code. I forgot to mention this in the video, but you can also select the code you want to run with your mouse, and then press f9. Im a sucker for code folded sections though.")
