Formula CFD (MVRC spin-off)

Post here information about your own engineering projects, including but not limited to building your own car or designing a virtual car through CAD.
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CAEdevice
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Joined: Thu Jan 09, 2014 2:33 pm
Location: Erba, Italy

Re: Formula CFD (MVRC spin-off)

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Hi, the developement is going on. I am working on the general balance of the template car and on some details (brakes cooling).
I have updated the image in the second post of this thread.

Merry Christmas, see you in 2020!

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CAEdevice
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Joined: Thu Jan 09, 2014 2:33 pm
Location: Erba, Italy

Re: Formula CFD (MVRC spin-off)

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Hi, I did not decide the track you will race in.

My initial project would have been to race in Monza, but I did some test with AssettoCorsa and a modified F4 (F4 with additional 50hp in order to match the general behaviour of our cars) and I have the impression that it would be all about drag reduction, more than efficiency.

My intention is to choose a track where efficiency matters, that requires no extreme downforce but also no extreme drug reduction. Maybe SPA? I think that the opinion of Richard (Machin) would be precious about his point (the general specifications of the car are in the first post).

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CAEdevice
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Joined: Thu Jan 09, 2014 2:33 pm
Location: Erba, Italy

Re: Formula CFD (MVRC spin-off)

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Hi, happy new year!

Here is the OpenFOAM case folder with the simulation of the test car.
I would like to share it to give you an idea of the car template I am working on (the 3D rulebook will be available later). Your opinions and suggestions will be very useful.

https://www.dropbox.com/s/gn590wqoqlbty ... 8.zip?dl=0

I also would like to check the simulation and complete the MFlow template: the one LDVH provided me some weeks ago works very well, I only have this doubts:

1) How can I obtain a measure of the average pressure (or pressure integral) on the brakes monitoring surfaces?
2) I would like to have 2 templates with the same mesh, the official one with 4000 iterations, the second with only 2500 iterations (I know I can set the iteration from inside MFlow)
3) Could someone check the CoP results? The ideal CoP is 1560mm, but I am not sure about cl.A "front" and "rear" values I see in the HTML report.

Finally: I updated the mechanics of the car you will have to dress /the philosophy is: more simulation/template realism less written rules.

Image

PS: The test car has lots of weak points, but this time I did not tried to design a fast car, only a test car for the preliminary simulations and to test the future rulebook.

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Koldskaal
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Joined: Tue May 14, 2019 9:02 am
Location: Denmark

Re: Formula CFD (MVRC spin-off)

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Nice!
I had a look at the project, something does seem off about CoP and the Clf Clr values. Liftcoeffs. shows more downforce on the front. But the CoP is more towards the rear 🤔.

On the overall design/how to regulate the car I have the following comments:
You wrote in the first post that the floor is inspired by the 2021 regs. So that is what i am basing some of these suggestions on.
* The outer edgee of the 2021 floor are more sculpted
* Fences are only allowed within the red area, not along the entire lenght of the floor.
* The 2021 regs have a predefined venturi tunnel (blue lines).
Image

* You are only allowed a vertical wall between the rearwheel and the venturi tunnel.
* The lower beam wing only spans the width of the venturi, with endplates connecting to the wider rear wing.
Image

I guess the primary thing is to define the floor such that one cannot inject fresh air into the tunnel. You could avoid this by making everything inside the "floor volume" one part, that may not contain apertures. I have made a suggestion for how the floor volume might look, as a simplified miniaturized version of the 2021 regs:
Image
Image
Step file download link: https://drive.google.com/drive/folders/ ... sp=sharing
These are all just suggestions, you decide in the end. :D
MVRC - Team Koldskaal, name: Christian

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CAEdevice
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Joined: Thu Jan 09, 2014 2:33 pm
Location: Erba, Italy

Re: Formula CFD (MVRC spin-off)

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Hi Christian, thanks for your suggestions. The floor will be inspired by F1 2021, but there will be more design freedom. The rear wing will be even more free.

About the CoP I have the same doubts, only LDVH/Mflow can help.

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CAEdevice
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Joined: Thu Jan 09, 2014 2:33 pm
Location: Erba, Italy

Re: Formula CFD (MVRC spin-off)

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Hello everyone, here I am back. I apologize for the long absence, I had some extra work mishaps.

The car template is ready and the software supplied by MantiumCAE works well, I just have to write the rules.

I am fighting between the hypothesis of starting March 1st (submissions after 1 month), or of allowing development over a much longer period, assuming to end of December 2020.
My intention is not to interfere with MVRC races.

etsmc
etsmc
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Joined: Wed Apr 04, 2012 12:20 pm

Re: Formula CFD (MVRC spin-off)

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I would prefer a longer development time but it depend on when MVRC may be starting up.
I think it is usual for one off races to have a long development period when the vehicles are not used/developed in any other series.

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CAEdevice
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Joined: Thu Jan 09, 2014 2:33 pm
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Re: Formula CFD (MVRC spin-off)

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etsmc wrote:
Thu Feb 13, 2020 3:42 am
I would prefer a longer development time but it depend on when MVRC may be starting up.
I think it is usual for one off races to have a long development period when the vehicles are not used/developed in any other series.
Hi etmsc, I confirm that the race (submission date) will be postponed to the end of December 2020. I could have been ready to schedule the race during summer but the overlapping with MVRC "hot" phase would have been a problem.

There will be some overlapping development with MVRC, but I am working on a strong differentiation of the technical rules and car template.

I also have good news: new simulated features will be added and I will accept more teams than initially planned.

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Koldskaal
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Re: Formula CFD (MVRC spin-off)

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CAEdevice wrote:
Fri Feb 21, 2020 9:05 pm
I also have good news: new simulated features will be added and I will accept more teams than initially planned.
Fan cars confirmed 😍 or brake cooling? what kinds of features are we talking about
MVRC - Team Koldskaal, name: Christian

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CAEdevice
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Joined: Thu Jan 09, 2014 2:33 pm
Location: Erba, Italy

Re: Formula CFD (MVRC spin-off)

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Koldskaal wrote:
Fri Feb 21, 2020 9:22 pm
CAEdevice wrote:
Fri Feb 21, 2020 9:05 pm
I also have good news: new simulated features will be added and I will accept more teams than initially planned.
Fan cars confirmed 😍 or brake cooling? what kinds of features are we talking about
Brake cooling for sure... but what do you mean with "fan cars"?

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Koldskaal
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Joined: Tue May 14, 2019 9:02 am
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Re: Formula CFD (MVRC spin-off)

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CAEdevice wrote:
Fri Feb 21, 2020 10:22 pm
Brake cooling for sure... but what do you mean with "fan cars"?
I mean a Chaparral or Murray style fan car, like:
Image
MVRC - Team Koldskaal, name: Christian

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CAEdevice
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Joined: Thu Jan 09, 2014 2:33 pm
Location: Erba, Italy

Re: Formula CFD (MVRC spin-off)

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Koldskaal wrote:
Sun Feb 23, 2020 3:29 pm
CAEdevice wrote:
Fri Feb 21, 2020 10:22 pm
Brake cooling for sure... but what do you mean with "fan cars"?
I mean a Chaparral or Murray style fan car, like:
https://upload.wikimedia.org/wikipedia/ ... an_car.jpg
Definetly not in my plans :)