Page 42 of 65
Re: [MVRC] Mantium Virtual Racecar Challenge 2019 (Grand Prix Cars)
Posted: 13 Oct 2019, 14:39
by CAEdevice

Congratulations to Christian
Re: [MVRC] Mantium Virtual Racecar Challenge 2019 (Grand Prix Cars)
Posted: 13 Oct 2019, 14:45
by Thomas2019
Congratulations to the winner!
Thomas
Re: [MVRC] Mantium Virtual Racecar Challenge 2019 (Grand Prix Cars)
Posted: 13 Oct 2019, 15:25
by machin
CAEdevice wrote: ↑13 Oct 2019, 13:30
Would it be possible to publish a table or picture of the simulation numbers? It is difficult to pause the video with the smartphone
The table struggles to fit in a page now we have so many teams...
https://mobile.twitter.com/Comp_Car_Eng ... 2695442433
Re: [MVRC] Mantium Virtual Racecar Challenge 2019 (Grand Prix Cars)
Posted: 13 Oct 2019, 15:32
by CAEdevice
Thanks!
Re: [MVRC] Mantium Virtual Racecar Challenge 2019 (Grand Prix Cars)
Posted: 13 Oct 2019, 20:26
by k.ko100v
jjn9128 wrote: ↑13 Oct 2019, 12:26
k.ko100v wrote: ↑13 Oct 2019, 12:06
Hi guys
I made a test simulation of my model, but I am struggle to understand the results. Would you help me to find where I get it wrong?
Here is how they are looking:
https://imgur.com/0Mx1pwb.jpg
I suspect you have a hole in your bodywork STL somewhere - perhaps the junction between "chassis" and "engine_cover" isn't water tight!?
LVDH wrote: ↑13 Oct 2019, 12:32
That looks like a blown up simulation. Have a look at the plots. The residuals are probably in the range of 0.1 and the forces over time will look crazy.
Most likely there is some open geometry. Maybe this helps to locate it:
https://mantiumchallenge.com/locating-h ... mulations/
Thanks guys,
I found the hole
Could you also explain me what the exchanger volume flow and the engine inlet pressure mean? Are there any minimum flow requirements?
Regards,
Krasen
Re: [MVRC] Mantium Virtual Racecar Challenge 2019 (Grand Prix Cars)
Posted: 13 Oct 2019, 20:29
by CAEdevice
The volume flow is the amount of air that passes through the hx, it must be equal or superior to 1.5×2=3.0 m3/s.
I don't remember the value of the engine inlet pressure, but I think it must be positive. You can find everything in the rulebook on the official website.
Re: [MVRC] Mantium Virtual Racecar Challenge 2019 (Grand Prix Cars)
Posted: 13 Oct 2019, 21:38
by machin
We impose a flow of 0.3m^3/sec on your engine intake (That’s the engine sucking in the air). All you need to do is make sure you have a positive pressure on the intake with that flow imposed. The figure given is actually the pressure integral... it just needs to be >0.


Re: [MVRC] Mantium Virtual Racecar Challenge 2019 (Grand Prix Cars)
Posted: 14 Oct 2019, 09:53
by JJR
Congratulations to Koldskaal, Matteo and Team racing ! Impressive results guys ! Really interesting championship now.
I was expecting to do little better especially on ballance side but never mind I ´m still having fun and looking forward to next races.
Re: [MVRC] Mantium Virtual Racecar Challenge 2019 (Grand Prix Cars)
Posted: 14 Oct 2019, 15:10
by Koldskaal
Thanks guys
Seeing the results got me thinking about how close me and CAEdevice are, with very different coefficents. So i played around a bit with mvrc-timing and did some matlabing and this is the result:

I only plotted cars with cop=1.85 and 100% engine power.
Beeing so far apart the last two tracks might favor one philosohpy over the other.

Re: [MVRC] Mantium Virtual Racecar Challenge 2019 (Grand Prix Cars)
Posted: 14 Oct 2019, 16:47
by variante
Hey Machin, please, add the new circuit in your simulator

Re: [MVRC] Mantium Virtual Racecar Challenge 2019 (Grand Prix Cars)
Posted: 14 Oct 2019, 18:05
by LVDH
JJR wrote: ↑14 Oct 2019, 09:53
Congratulations to Koldskaal, Matteo and Team racing ! Impressive results guys ! Really interesting championship now.
I was expecting to do little better especially on ballance side but never mind I ´m still having fun and looking forward to next races.
Yes, really cool season, so strange to see JJR in the mid field but new comers on top.
I have updated the page:
https://mantiumchallenge.com/results-suzuka-2019/
I will try to add the new teams tomorrow.
Re: [MVRC] Mantium Virtual Racecar Challenge 2019 (Grand Prix Cars)
Posted: 14 Oct 2019, 21:05
by CAEdevice
I am more and more impressed by Koldskaal car. Despite a not perfect CAD modeling it is full of good ideas and details that prove a great knowledge of aerodynamics (for sure better than mine). I have 14 points more then him but I can't consider myself safe, because with two wins he will obtain the same points as me, but with more victories and I am sure that a couple of teams can do better than me in the next races.
In summary: it's like having two match points but against Roger Federer.
Re: [MVRC] Mantium Virtual Racecar Challenge 2019 (Grand Prix Cars)
Posted: 14 Oct 2019, 23:05
by machin
variante wrote: ↑14 Oct 2019, 16:47
Hey Machin, please, add the new circuit in your simulator
The final two tracks are now added... usual link;
MVRC Timing
Re: [MVRC] Mantium Virtual Racecar Challenge 2019 (Grand Prix Cars)
Posted: 15 Oct 2019, 12:46
by jjn9128
5.1.2 The planar shapes may be rotated around the Y-axis only. [deleted]
Does the "deleted" bit mean some extra text has been removed or that this rule no longer applies?
Re: [MVRC] Mantium Virtual Racecar Challenge 2019 (Grand Prix Cars)
Posted: 15 Oct 2019, 13:22
by rjsa
There was another rule after that specifying minimum hx dimensions that was deleted.
(If memory serves me right)