Hey! I've been here and there, you know. Busy with stuff outside of RUclips. But I'm working on videos so hopefully I don't disappear for too long next time.
Bonjour, j'ai essayé de faire le programme avec tout les fichier télécharger et ils sont tous dans badFloil, je ne comprends pas pourquoi. Merci beaucoup pour votre aide
Hi Josh, very interesting video. I'm working on some foam cutting software written in python. The software was originally written in python2 but I've now updated it to 3 and it works well. But I'm trying to add a value for the kerf of the hot wire and struggling with the math. I thought just adding a value to the Y after scaling the airfoil would do it but it doesn't. Looks ok at the trailing edge but once near the leading edge, it doesn't work well. Basically, I need an offset from the x,y coordinates. Wondered if you knew a way to do this. Thanks in advance
Hi, I have this error: >> LOAD_AIRFOIL Not enough input arguments. Error in LOAD_AIRFOIL (line 28) fidAirfoil = fopen(['./Airfoil_DAT/' fileName '.dat']); % Open the airfoil data file How can I solve it?
@@fabioli96 Correct. And then make sure that when you type the airfoil name that you want to load (the fileName variable), you don't include the file extension (.dat).
@@JoshTheEngineer still not working, do I have to create another script and type LOAD_AIRFOIL(put the file name of the airfoil without .dat) and it should load the coordinated, but it said unrecognized variable or function.. should the script be in the same folder of the airfoil or not?
Hey, I tried downloading the code from your site, but I got an error ("Error! Failed to log the download request in the database table"). Is the code available elsewhere?
I'm actually trying to deal with this right now. My site is built using WordPress, which is one of my least favorite things in the world. Every time it tells me to update a plugin, it crashes my site and it takes forever to fix it. Anyway, all my code is also on my GitHub: github.com/jte0419/Panel_Methods
@@G032-bt4bt No problem. I hope the GitHub download worked for you, but I actually just fixed my website too, so all those downloads will work again (hopefully).
Thanks! The main use of these past few videos is to get outside airfoils (non-NACA) into my panel methods code that I'll be going through in my upcoming videos. But I also thought it might be interesting to build a mini wind tunnel, print some airfoils, and see what kinds of lift values I can get to compare to the panel methods.
I actually haven't coded any elliptic grid generation scripts, so at the moment I don't know it well enough to make a video about it. The only grids I use are fairly simple geometries, but I would eventually like to get more into grid generation. When the day comes that I feel comfortable enough with it, I'll definitely make a video!
All these videos that I'm posting now are incrementally working towards my panel methods videos. I'm just trying to lay all the groundwork so that once those final videos come out, there will be a complete set of videos for the panel methods so that anyone can run them from start to finish.
Hi. Josh! Very nice videos. I m looking for a mathematic itinarary to be able to create C4 airfoil section for my CAD prroject. Do you know where it can be found? It is for a single stage gas turbine. Thanks
In my research that call naca 4&5 digits airfoil there is a part call panel method in this part there is equations which l went rewrite in Matlab and give in last a draw naca 4 digit airfoil
![Путин и ПЕСКОВ ждут звонка от ТРАМПА 😁 [Пародия]](/img/1.gif)
Love code with good comments - worth their weight in gold.
Thanks! I always try to have comments, because I usually forget what I did when I look back at it later.
Josh! Where you've been? Wow glad to see you again
Hey! I've been here and there, you know. Busy with stuff outside of RUclips. But I'm working on videos so hopefully I don't disappear for too long next time.
Bonjour, j'ai essayé de faire le programme avec tout les fichier télécharger et ils sont tous dans badFloil, je ne comprends pas pourquoi.
Merci beaucoup pour votre aide
Hi Josh, very interesting video. I'm working on some foam cutting software written in python. The software was originally written in python2 but I've now updated it to 3 and it works well. But I'm trying to add a value for the kerf of the hot wire and struggling with the math. I thought just adding a value to the Y after scaling the airfoil would do it but it doesn't. Looks ok at the trailing edge but once near the leading edge, it doesn't work well. Basically, I need an offset from the x,y coordinates. Wondered if you knew a way to do this.
Thanks in advance
Hi, I have this error:
>> LOAD_AIRFOIL
Not enough input arguments.
Error in LOAD_AIRFOIL (line 28)
fidAirfoil = fopen(['./Airfoil_DAT/' fileName '.dat']); % Open the airfoil data file
How can I solve it?
Are you sure the path that "fopen" is using is a valid directory/folder and file in that folder?
@@JoshTheEngineer I have to create a folder where there is the Matlab code called Airfoil_DAT right? that contains all the airfoil
@@fabioli96 Correct. And then make sure that when you type the airfoil name that you want to load (the fileName variable), you don't include the file extension (.dat).
@@JoshTheEngineer still not working, do I have to create another script and type LOAD_AIRFOIL(put the file name of the airfoil without .dat) and it should load the coordinated, but it said unrecognized variable or function.. should the script be in the same folder of the airfoil or not?
Hey, I tried downloading the code from your site, but I got an error ("Error! Failed to log the download request in the database table"). Is the code available elsewhere?
I'm actually trying to deal with this right now. My site is built using WordPress, which is one of my least favorite things in the world. Every time it tells me to update a plugin, it crashes my site and it takes forever to fix it. Anyway, all my code is also on my GitHub: github.com/jte0419/Panel_Methods
@@JoshTheEngineer aah, I see. thanks for responding.
@@G032-bt4bt No problem. I hope the GitHub download worked for you, but I actually just fixed my website too, so all those downloads will work again (hopefully).
Great stuff! How are you going to use it? Will you perhaps use your 3d printer?
Thanks! The main use of these past few videos is to get outside airfoils (non-NACA) into my panel methods code that I'll be going through in my upcoming videos. But I also thought it might be interesting to build a mini wind tunnel, print some airfoils, and see what kinds of lift values I can get to compare to the panel methods.
it code give me the following error
Error using textscan
Invalid file identifier. Use fopen to generate a valid file identifier.
I need it badly
Hey also can you make a video on mesh generation techniques?it will be help particularly elliptical grids
I actually haven't coded any elliptic grid generation scripts, so at the moment I don't know it well enough to make a video about it. The only grids I use are fairly simple geometries, but I would eventually like to get more into grid generation. When the day comes that I feel comfortable enough with it, I'll definitely make a video!
@@JoshTheEngineer can I collaborate with you on that? Let me know
When are you going to post vortex and source panel methods?
All these videos that I'm posting now are incrementally working towards my panel methods videos. I'm just trying to lay all the groundwork so that once those final videos come out, there will be a complete set of videos for the panel methods so that anyone can run them from start to finish.
@@JoshTheEngineer I am really looking forward for the panel methods
@@JoshTheEngineer Thanks for your videos
Hi. Josh! Very nice videos. I m looking for a mathematic itinarary to be able to create C4 airfoil section for my CAD prroject. Do you know where it can be found? It is for a single stage gas turbine. Thanks
I'm actually not familiar with that type of airfoil section, so I'm not sure I'll be of much help. Good luck!
Why every airfoil is showing as bad for me?
Hi l went to help me in Matlab can you ??
If you have specific questions I can try to help you.
In my research that call naca 4&5 digits airfoil there is a part call panel method in this part there is equations which l went rewrite in Matlab and give in last a draw naca 4 digit airfoil
Mohaned Khogali some of us interested in your question are still trying to understand what exactly it is you are asking.
Yes