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Rule 7.1.3: Must be located within the bodywork volume at a point 1880mm rearward of the FWCL, and 700mm above the reference plane.

9.2 Parts inside of the volumes:

RV_FLOOR_FENCE_V01
RV_FRT_WHL_DEFL_V05
RV_FRT_WING_VOL_V02
RV_RR_WING_2023_V01
RV_RR_WHL_Winglet_V01
must be included into the high_res folder.

9.8 Parts MAND_FRT_SUSP_2023_V* and those inside of RV_FRT_WHL_DEFL_V* must be placed into the folder “frt_suspension”. Parts MAND_RR_SUSP_2023_V* and those in RV_RR_WHL_Winglet_V* must be placed into the folder “rr_suspension”.

Busor wrote: ↑

11 Sep 2023, 15:08

Hi again,

i'm in the middle of redesigning larger parts of my car and have some questions about some of the rules, maybe someone can clarify:

Engine Inlet:

Rule 7.1.3: Must be located within the bodywork volume at a point 1880mm rearward of the FWCL, and 700mm above the reference plane.

-> Does this mean the engineIn surface has to be on X=1880 mm or just somewhere rearward of X=1880? If the first is true, the picture in the regulations where bodywork can go forward of that surface to form a smooth inlet wouldn't be possible, as the box for the bodywork ends at exactly X=1880.

Busor wrote: ↑

11 Sep 2023, 15:08

Bodywork:
I see two possibilities so submit the wheel deflectors/winglets in the rules:

9.2 Parts inside of the volumes:

RV_FLOOR_FENCE_V01
RV_FRT_WHL_DEFL_V05
RV_FRT_WING_VOL_V02
RV_RR_WING_2023_V01
RV_RR_WHL_Winglet_V01
must be included into the high_res folder.

and

9.8 Parts MAND_FRT_SUSP_2023_V* and those inside of RV_FRT_WHL_DEFL_V* must be placed into the folder “frt_suspension”. Parts MAND_RR_SUSP_2023_V* and those in RV_RR_WHL_Winglet_V* must be placed into the folder “rr_suspension”.

While I agree to put a high resolution on the wheel deflectors, it that case it would cause the deflectors to be translated downwards if any ride height adjustment is applied. So clearly rule 9.8 is there to prevent that, I just would like to suggest, that the "RV_FRT_WHL_DEFL_V05" and "RV_RR_WHL_Winglet_V01" volumes are removed from rule 9.2.

Busor wrote: ↑

11 Sep 2023, 15:08

and lastly bodywork/10mm thickness:
I'm a little confused looking at the car renders. It seems that some floors/diffusors are flat surfaces. I'm not sure I got it right, but I understood that the floor should be at a minimum thickness of 10 mm at any point? Am I seeing the renders wrong or reading the rules wrong?

Busor wrote: ↑

11 Sep 2023, 15:08

And I haven't recieved any report from the monza race, is that correct?
Edit: I recieved it just now.

Thanks for your help.

HermesMotorsport wrote: ↑

11 Sep 2023, 21:27

Hi everyone!
I have a question concerning MantiumFlow and the cooling. I seem to get very unrealistic values for the flow inside my radiator. For example in the official report I got the value 0.65...m^3/s but when I do my simulation I get values like 0.022...m^3/s . I guess I must be setting wrong my case, but I can't figure out what to change. If anyone has an idea of how to solve this problem I'd be very thankful!

CAEdevice wrote: ↑

11 Sep 2023, 22:14

Are the stl files of heat exchangers and monitoring surfaces refined enough (triangles smaller than 10mm?)

LVDH wrote: ↑

11 Sep 2023, 21:11

It can be behind the 1880mm plane. Not sure why this is not possible, but I cannot open the CAD files right now.

LVDH wrote: ↑

11 Sep 2023, 21:11

Maybe you do not quite understand the rule, or I am once more having issues understanding my own words, but the idea is to put the mandatory suspension parts and the parts inside of the volumes into the mentioned folders. Putting the parts into these folders does not only add additional mesh refinement but also affects how the parts are morphed. The morphing is only 98% good, but for the most part, you should barely be able to notice that the deflectors get morphed, if you place them into another folder you might be able to see it rather clearly.

LVDH wrote: ↑

11 Sep 2023, 21:11

Yes, you were among the two teams that did not receive it in my first try and it seems for you I needed three, no idea why, though.

Busor wrote: ↑
Yes I get that, but how i understand it, rule 9.2 requires the front wheel deflector to go in the high_res folder, while rule 9.8 says it has to go in the frt_suspension folder. And i assume the part shouldn't be in both folders? Or am I reading this horribly wrong?

HermesMotorsport wrote: ↑

11 Sep 2023, 21:27

Hi everyone!
I have a question concerning MantiumFlow and the cooling. I seem to get very unrealistic values for the flow inside my radiator. For example in the official report I got the value 0.65...m^3/s but when I do my simulation I get values like 0.022...m^3/s . I guess I must be setting wrong my case, but I can't figure out what to change. If anyone has an idea of how to solve this problem I'd be very thankful!

Koldskaal wrote: ↑

12 Sep 2023, 16:51

Busor wrote: ↑
Yes I get that, but how i understand it, rule 9.2 requires the front wheel deflector to go in the high_res folder, while rule 9.8 says it has to go in the frt_suspension folder. And i assume the part shouldn't be in both folders? Or am I reading this horribly wrong?

The parts that are attached to the wheels should be placed in the respective frt/rr suspension folder.

I'm guessing that they were mentioned in 9.2 first, before the suspension-morphing worked. And simply not removed from 9.2 after they were given a new folder in 9.8

LVDH wrote: ↑

15 Sep 2023, 08:22

The issue with your monitoring surface is mainly because it was not a surface. You send a flat volume. This means you have overlapping triangles with surface normals pointing in two directions, one is pointing forward one backward. So one counts positive flow rate and one negative. This is why you get a value close to zero.
Also, please have a look at this:
https://mantiumchallenge.com/porous-media-openfoam/

Oh, Ok. Thank you very much!