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

[LVDH]

I think it looks very cool. And it is a unique design, so I like it.

Thank You So Much! I hope it performs well in this race.

Well, we all know,cool is always fast. Just remember to register your team, if you have not done so, yet.


Something that has been bugging me, is the quality of the Blender renders. Is there anyone here, who could help improve them, esp. the lighting situation?

[LVDH]

Pretty quite here. I only today updated the rules. There is nothing that relevant in there. Just keep in mind, that I would like to now post the scrutineering results as quickly as possible. This means that appealing any findings will not be possible for delayed entries anymore.

The new MFlow version has quite some updates. Now, the minor bugs, I detected when running on cloudHPC have been wiped out. Also, we now have the correct turbulence model back on the wheels.
Together with cloudHPC, we will now schedule a webevent, where we will show you guys how to use MFlow on cloudHPC. I assume this will happen after the next race, but lets see, maybe we can make it faster.

I ran a test with the new version and saw 10% increases in load and drag. I’m assuming it was related to the tyre changes as everything was identical on the geometry side. More just for info than anything

That is a lot, I should run a test as well.

I did not have much time this week and will not tomorrow either. I have quite some results from the new Matteo Body but will have to share them next week.
Just now, I checked my test of the car with the correct turbulence wall function on the wheels compared to the one we used the first races. My numbers match up so well, that I even wonder if I am running the same simulation twice (the boundary conditions in the 0 folder are different, so I am not sure).
Can anyone else confirm that the wall model on the wheels affects the results this much?

[CAEdevice]

I ran a test with the new version and saw 10% increases in load and drag. I’m assuming it was related to the tyre changes as everything was identical on the geometry side. More just for info than anything

That is a lot, I should run a test as well.

I did not have much time this week and will not tomorrow either. I have quite some results from the new Matteo Body but will have to share them next week.
Just now, I checked my test of the car with the correct turbulence wall function on the wheels compared to the one we used the first races. My numbers match up so well, that I even wonder if I am running the same simulation twice (the boundary conditions in the 0 folder are different, so I am not sure).
Can anyone else confirm that the wall model on the wheels affects the results this much?

For me +4% downforce and +10% drag (Race 02 geometry).

[k.ko100v]

That is a lot, I should run a test as well.

I did not have much time this week and will not tomorrow either. I have quite some results from the new Matteo Body but will have to share them next week.
Just now, I checked my test of the car with the correct turbulence wall function on the wheels compared to the one we used the first races. My numbers match up so well, that I even wonder if I am running the same simulation twice (the boundary conditions in the 0 folder are different, so I am not sure).
Can anyone else confirm that the wall model on the wheels affects the results this much?

For me +4% downforce and +10% drag (Race 02 geometry).

Is the increased downforce equally distributed between both axis?

[CAEdevice]

For me +4% downforce and +10% drag (Race 02 geometry).

Is the increased downforce equally distributed between both axis?

I can confirm, although this may not apply to cars designed according to different principles.

[CAEdevice]

Hi everyone, I'm back from vacation and I've gone through the latest regulation updates after a long pause from MVRC.

I have found that the updates, released after Monaco, include a more rational verification procedure (before running the simulations) and a general improvement of wording and shared files.
It looks like a solid job has been done, so thank you to the staff for that.

Since I paused development after the Monaco events (and also for my holiday break), I won’t be able (as planned) to submit an upgraded car (that will come for the race in Monza).
However, I decided to run the car that was originally planned for Monaco, with a slight wings setup refinement (no longer aimed at extreme downforce) and a simulation to check how the recent changes to the calculation model affect the CoP.

[yinlad]

Hi everyone, I'm back from vacation and I've gone through the latest regulation updates after a long pause from MVRC.

I have found that the updates, released after Monaco, include a more rational verification procedure (before running the simulations) and a general improvement of wording and shared files.
It looks like a solid job has been done, so thank you to the staff for that.

Since I paused development after the Monaco events (and also for my holiday break), I won’t be able (as planned) to submit an upgraded car (that will come for the race in Monza).
However, I decided to run the car that was originally planned for Monaco, with a slight wings setup refinement (no longer aimed at extreme downforce) and a simulation to check how the recent changes to the calculation model affect the CoP.

Good to hear. I'll also be submitting a car, I had a free couple of days and threw a new concept together. It's nothing revelational but a significant step forward and hopefully in the right direction wrt correlation too. Though I don't know that I'll really have much time to work on it going forward, perhaps some trimmed wings for Monza

[yinlad]

[LVDH]

Yeah baby, great car! Can I use the top render for the challenge homepage?

[yinlad]

Yeah baby, great car! Can I use the top render for the challenge homepage?

Of course

[Ft5fTL]

2025 MKII:




As the name and the renders suggest, around %90 of the car is brand new. I decided to go with a more conventional downwash/inwash style sidepod on this one. Apart from that; floor, rear wing, barge boards are brand new, front wing is heavily revised. This is also my first formula car that will use a rake angle if my memory is correct. According to my sims, i got around %30 more downforce and around %8-10 more drag. The only worry is about cooling, its around the limits, very little headroom for error.

[CAEdevice]

2025 MKII:

Cool car and renderings!

+30% compared to your downforce in Monaco? Impressive!

[LVDH]

2025 MKII:
As the name and the renders suggest, around %90 of the car is brand new. I decided to go with a more conventional downwash/inwash style sidepod on this one. Apart from that; floor, rear wing, barge boards are brand new, front wing is heavily revised. This is also my first formula car that will use a rake angle if my memory is correct. According to my sims, i got around %30 more downforce and around %8-10 more drag. The only worry is about cooling, its around the limits, very little headroom for error.

As always, very cool renders. I think, you deserve a victory just because of them anyways. But you have progressed so much the last years, these numbers sound like they could achieve exactly that.



And, as I hopped to achieve, it is Monday and I have the scrutineering results for you:

• AeroStar Racing: 2.4, 2.5, 11.3

• DK Racing: 2.1, 12.2, 15.1

• HermesMotorsport: 9.1

• Kostov Racing: 11.3

[Ft5fTL]

2025 MKII:

Cool car and renderings!

+30% compared to your downforce in Monaco? Impressive!

Thanks to "Matteo body", lots of gains comes from the correction of the poorly aligned/designed rear wing profiles so, thanks for that. It's still my profiles, endplates etc. but it made me realize how badly the old one performs after trying yours.

As always, very cool renders. I think, you deserve a victory just because of them anyways. But you have progressed so much the last years, these numbers sound like they could achieve exactly that.

Thanks. For 20 iterations, every geometry change yielded performance so thats a first to me on this competition. I hope it will translate to the long template without forming any big seperations (nervously looking at the sidepod inlet)

https://i.imgur.com/q6MU8I9.png
https://i.imgur.com/wfISbir.png
https://i.imgur.com/lNogcv4.png

Another sidepod shape i need to try i guess. Cool renders btw

[k.ko100v]

2025 MKII:
As the name and the renders suggest, around %90 of the car is brand new. I decided to go with a more conventional downwash/inwash style sidepod on this one. Apart from that; floor, rear wing, barge boards are brand new, front wing is heavily revised. This is also my first formula car that will use a rake angle if my memory is correct. According to my sims, i got around %30 more downforce and around %8-10 more drag. The only worry is about cooling, its around the limits, very little headroom for error.

As always, very cool renders. I think, you deserve a victory just because of them anyways. But you have progressed so much the last years, these numbers sound like they could achieve exactly that.



And, as I hopped to achieve, it is Monday and I have the scrutineering results for you:

• AeroStar Racing: 2.4, 2.5, 11.3

• DK Racing: 2.1, 12.2, 15.1

• HermesMotorsport: 9.1

• Kostov Racing: 11.3

Hello, I just double checked my RW endplate geometry and from my perspective is legal. Some areas are on the volume border but as far as I remember there was an update of the scrutineering process which should define such cases as OK.
What are going to be the consequences? Will I have the chance to send updated RW Endplate, for this race, if I get the exact reason for this nonconformity?