[MVRC] Mantium Virtual Racecar Challenge 2025 (Grand Prix Cars)

[janci_kp]

Okay, got it. And with mandatory parts you mean that I should trim the plank with the floor in the cad software?

[AlexTitaneGP]

To summarise my WSL journey:

Many thanks for this awesome tutorial !

I thought I went though it, however, while building the case, it got stuck and display this error in the ubuntu terminal :

/mnt/f/Starccmp/03_MVRC/2025/RunMantium/V1/001_Run001/constant/triSurface/V1_FloorBoard_002A.stl
Writing file to: /mnt/f/Starccmp/03_MVRC/2025/RunMantium/V1/001_Run001/constant/triSurface/V1_FloorWraped_002A.stl
Writing file to: /mnt/f/Starccmp/03_MVRC/2025/RunMantium/V1/001_Run001/constant/triSurface/V1_FrtWing_001A_Nose.stl
Writing file to: /mnt/f/Starccmp/03_MVRC/2025/RunMantium/V1/001_Run001/constant/triSurface/V1_LED_002A.stl
Traceback (most recent call last):
File "MFlow.py", line 896, in create_case
File "MFlow.py", line 1500, in createCases
File "MFlow.py", line 1073, in buildCase
File "MFlow.py", line 3501, in write_cfd_case
File "MFlow.py", line 1779, in create_system_folder
File "MFlow.py", line 3869, in write_fvSchemes_fo
File "shutil.py", line 418, in copy
File "shutil.py", line 307, in copymode
PermissionError: [Errno 1] Operation not permitted: '/mnt/f/Starccmp/03_MVRC/2025/RunMantium/V1/001_Run001/system/fvSchemes'

Does anyone have any idea on what might be the mistake I'm doing ?

best regards

Alex

[LVDH]

This one is strange. You could think that you simply do not have the permission to write there. But you do have it. Because before writing the fvSchemes file, it first creates the system folder which seems to have worked. Also it looks like it also wrote some stl files even before this step.
My best guess is that your hard disk is full. I would check that and just to be sure try writing the case to a different folder. Maybe MFlow is allergic to straccm?

[spacehead3]

Hey it's race week!

[yinlad]

Hey it's race week!
https://i.imgur.com/YQP5QnA.png

I wondered when we'd get the first one! I was just getting my blender scene set up actually.

[CAEdevice]

Hey it's race week!
https://i.imgur.com/YQP5QnA.png

Beautiful! at first glance it already seems to comply with the minimum radius of curvature rule (2nd race)

[k.ko100v]

Hey it's race week!
https://i.imgur.com/YQP5QnA.png

Beautiful! at first glance it already seems to comply with the minimum radius of curvature rule (2nd race)

Awesome looking car.

Regarding the new rule introduced from the second race, would it be possible to provide feedback on all cars submitted for the first race—specifically whether they comply with the rule and which areas are problematic?

Regards,
Krasen

[AlexTitaneGP]

This one is strange. You could think that you simply do not have the permission to write there. But you do have it. Because before writing the fvSchemes file, it first creates the system folder which seems to have worked. Also it looks like it also wrote some stl files even before this step.
My best guess is that your hard disk is full. I would check that and just to be sure try writing the case to a different folder. Maybe MFlow is allergic to straccm?

hehe well spotted for Scarccm

So, the disk is quite empty actually, (916Go available) I've tried other disk, shorter path etc... and I still have the same issue.

I've registered quite lately (like monday morning), haven't received an email yet (don't know if that's normal or not). But I guess it's not a big deal as this will be a bad DNS for me ! (I still had a few stuff to design on that car (brake duct and mirror), in the old mantium Aero balance was way off, but I wanted to wait for the final geometry before trying to deal with it. And I must confess motivation is quite low with me not succeeding to make mantium work.

by the way, I do not know if it's only me but it looks like the STL mandated parts and the parts which are within the MVRC_R09.stp (which was nicely organised!) are not positionned the same way, some 50mm offset there and there, and mandated suspension were not within the suspension fairings I've designed.

have a nice first race guys, if anyone had similar issue with Mflow, and find a solution, I'll be happy to test it !

best regards

Alex

[yinlad]

Random request, can we get a set of render wheels that are a bit more detailed than the cfd ones

[CAEdevice]

Random request, can we get a set of render wheels that are a bit more detailed than the cfd ones

Good question. I can prepare new wheels for the renderings but after the first race submissions.

[janci_kp]

WE ARE RACING SOON!
[EaJ Racing][/https://imgur.com/a/wR0MUIC]

[CAEdevice]

WE ARE RACING SOON!
[EaJ Racing][/https://imgur.com/a/wR0MUIC]

Welcome, great job. Are you already on LinkedIn? What's the name of the team?

[yinlad]

WE ARE RACING SOON!
[EaJ Racing][/https://imgur.com/a/wR0MUIC]

Very interesting, looks to be very heavily loaded at the front so I’m curious how you’ve balanced it. I’ve found rear downforce hard to come by so far!

[janci_kp]

WE ARE RACING SOON!
[EaJ Racing][/https://imgur.com/a/wR0MUIC]

Welcome, great job. Are you already on LinkedIn? What's the name of the team?

I’m on LinkedIn but only with my personal account - Ján Kapráľ. I reposted it right now.

[janci_kp]

WE ARE RACING SOON!
[EaJ Racing][/https://imgur.com/a/wR0MUIC]

Very interesting, looks to be very heavily loaded at the front so I’m curious how you’ve balanced it. I’ve found rear downforce hard to come by so far!

I’m still trying to balance it at the rear. Rake helped with cleaning the wake inside the diffuser but also added more DF to the front. We will probably make some changes for the second race.