[MVRC] Mantium Virtual Racecar Challenge 2017

[JJR]

Congratulations to Matteo for great victory. I was just amazed your car performance.I must carefuly
look at your car
And yes also congratulation to Variante. Welcome back on top .

[CAEdevice]

Congratulations to Matteo for great victory. I was just amazed your car performance.I must carefuly
look at your car
And yeas also congratulation to Variante. Welcome back on top .

Thank you! We are repeating the same struggle of MVRC2016, who knows how will it end this time?
I studied your car too, I still have some things to understand about it.

[rjsa]

That was a nice race, congrats Matteo, JJR & Variante.

[AratzH]

I just got the official results I somehow there is a -0.189 difference in Df ,0.001 in drag and 0.07 in COP compared with my results. I thought it was because the official run was 1000 iterations longer, but it seems that some of the residual plots differ noticeably. I'm pretty sure I ran with V2017-9. Is there a way to check that? Any other reason this could have happened?

[CAEdevice]

I just got the official results I somehow there is a -0.189 difference in Df ,0.001 in drag and 0.07 in COP compared with my results. I thought it was because the official run was 1000 iterations longer, but it seems that some of the residual plots differ noticeably. I'm pretty sure I ran with V2017-9. Is there a way to check that? Any other reason this could have happened?

Hi, I also had a small difference in Cl*A (0,1 less) comparing the standard simulation (2500 iterations) to the longer simulation (3500 iteration). Using the same number of iterations my local analysis and the official one produce almost identical results.

PS: I had never noticed before your rotary engine avatar

[Alonso Fan]

Just got my results and can now see the places where separation is occurring, namely on the front wings and diffuser.

Will have to sort that out before rebalancing and searching for more downforce

[machin]

For me it is time to finally implement the rotated heat exchangers.

Presumably if/when you do this the HE parameters will change so that the cars' side pods remain realistic sizes... so even though they'll be leant over at an angle their face area (measured perpendicular to their surface) will be greater than present?

[MadMatt]

Congrats to everybody, very impressive results by Matteo, over 7 of L/D ratio!

[CAEdevice]

Congrats to everybody, very impressive results by Matteo, over 7 of L/D ratio!

Thanks! I think that 7.5 would be possible, but not for me

[CAEdevice]

For me it is time to finally implement the rotated heat exchangers.

Presumably if/when you do this the HE parameters will change so that the cars' side pods remain realistic sizes... so even though they'll be leant over at an angle their face area (measured perpendicular to their surface) will be greater than present?

I don't think the sidepods dimensions would change very much, I am considering (in a very preliminary design) an inclination of about 30÷45°and the sidepods external surface would not change that much.

The larger area might increase the flow inside the duct. With my layout this will slightly improve the front df (cl.A front +0.1), since the cooling ducts suck air from the front diffuser. With Nissan-LMP1 (TF, Variante) concept, I think the most important effect would be a general drag reduction.

Anyway, I will use for the next race the same car I used in Sepang, just some small changes about minor legality issues and a small increase of the cooling inlet area (my cooling flow was near to the lower limit). I am considering a small reduction of rear df in order to have a better balance (I have small flow separation problems with the rear wing).

PS: I am trying to visualize a 3D model (with some limitation of the allowed point of view ) in a html page. This would solve the limit of 2D pictures when "studying" oppontent's cars. I hope to make it work for the next mvrc edition.

[etsmc]

has anyone got their full results yet?

[AratzH]

I did

[rjsa]

Same here. Check drop box?

[Alonso Fan]

Yep got mine

[CAEdevice]

Same for me