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Re: [MVRC] Mantium Virtual Racecar Challenge 2017

Posted: 25 Sep 2017, 11:46
by JJR
Congratulations to Matteo for great victory. I was just amazed your car performance.I must carefuly
look at your car :wink:
And yes also congratulation to Variante. Welcome back on top .

Re: [MVRC] Mantium Virtual Racecar Challenge 2017

Posted: 25 Sep 2017, 12:29
by CAEdevice
JJR wrote:
25 Sep 2017, 11:46
Congratulations to Matteo for great victory. I was just amazed your car performance.I must carefuly
look at your car :wink:
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.

Re: [MVRC] Mantium Virtual Racecar Challenge 2017

Posted: 25 Sep 2017, 21:52
by rjsa
That was a nice race, congrats Matteo, JJR & Variante.

Re: [MVRC] Mantium Virtual Racecar Challenge 2017

Posted: 26 Sep 2017, 18:40
by 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?

Re: [MVRC] Mantium Virtual Racecar Challenge 2017

Posted: 26 Sep 2017, 19:00
by CAEdevice
AratzH wrote:
26 Sep 2017, 18:40
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 :)

Re: [MVRC] Mantium Virtual Racecar Challenge 2017

Posted: 26 Sep 2017, 19:57
by 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

Re: [MVRC] Mantium Virtual Racecar Challenge 2017

Posted: 27 Sep 2017, 00:53
by machin
LVDH wrote:
24 Sep 2017, 15:35
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?

Re: [MVRC] Mantium Virtual Racecar Challenge 2017

Posted: 27 Sep 2017, 09:57
by MadMatt
Congrats to everybody, very impressive results by Matteo, over 7 of L/D ratio! :)

Re: [MVRC] Mantium Virtual Racecar Challenge 2017

Posted: 27 Sep 2017, 12:34
by CAEdevice
MadMatt wrote:
27 Sep 2017, 09:57
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 :)

Re: [MVRC] Mantium Virtual Racecar Challenge 2017

Posted: 28 Sep 2017, 23:02
by CAEdevice
machin wrote:
27 Sep 2017, 00:53
LVDH wrote:
24 Sep 2017, 15:35
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.

Re: [MVRC] Mantium Virtual Racecar Challenge 2017

Posted: 29 Sep 2017, 02:28
by etsmc
has anyone got their full results yet?

Re: [MVRC] Mantium Virtual Racecar Challenge 2017

Posted: 29 Sep 2017, 04:32
by AratzH
I did

Re: [MVRC] Mantium Virtual Racecar Challenge 2017

Posted: 29 Sep 2017, 08:54
by rjsa
Same here. Check drop box?

Re: [MVRC] Mantium Virtual Racecar Challenge 2017

Posted: 29 Sep 2017, 10:11
by Alonso Fan
Yep got mine

Re: [MVRC] Mantium Virtual Racecar Challenge 2017

Posted: 29 Sep 2017, 10:19
by CAEdevice
Same for me