[KVRC] Khamsin Virtual Racecar Challenge 2016

[CAEdevice]

Hi, any news about cooling rules, calendar, first race, next race?

Sorry, nothing to report yet. It sounds like Julien isn't back up to speed yet.

Thank you. I would be sorry to skip the next race (maybe the next two, if race 3 date will be confirmed), but, as I wrote last week, I'm leaving in a few days.

I would need some information about the rules, in order to submit a car:

1) The cooling model (opt1) will be changed?

2) If a simplified cooling model will be choosen (without imposed flow), which would be the required resultant force (or integral of pressure) over the cooling inlets/outlets? The internal templates wuold be unchanged?

3) Could I anticipate the submission process (submission/check/resubmission after 48h) during next week?

4) In case race 3 date will be confirmed, can I use the same car of point 2 (without a new resubmission?)

Thank you!

[machin]

just in the interest of sharing and for those that are curious I have posted some info and results on the 'vortex cell' in the diffuser.
https://mercurymotorsport.wordpress.com ... -diffuser/

That's a shame.... it would've been interesting if you had found a game-changer!

[etsmc]

just in the interest of sharing and for those that are curious I have posted some info and results on the 'vortex cell' in the diffuser.
https://mercurymotorsport.wordpress.com ... -diffuser/

That's a shame.... it would've been interesting if you had found a game-changer!

Always on the lookout for something different as can be seen in the design of my cars. I have no real knowledge or understanding but willing to try things that may not work or make sense.
Would be cool to stumble upon something big but highly unlikely.

[wesley123]

just in the interest of sharing and for those that are curious I have posted some info and results on the 'vortex cell' in the diffuser.
https://mercurymotorsport.wordpress.com ... -diffuser/

The lack of effectiviness might be related to the height relative to the bottom?

Afaik the use of these systems, or better seen in the image RicME posted, is to break up a boundary layer, not to reduce pressure. Latter application wouldn't mean much anyways if you design your diffuser with max. angle in mind.

[cdsavage]

I would need some information about the rules, in order to submit a car:

1) The cooling model (opt1) will be changed?

2) If a simplified cooling model will be choosen (without imposed flow), which would be the required resultant force (or integral of pressure) over the cooling inlets/outlets? The internal templates wuold be unchanged?

I don't have an answer yet on any CFD changes. As for the rules, it's unlikely that there will be any significant change, if we did this then we'd probably need to skip a round entirely to give everyone time to adapt to the changes. The K4.* inner templates won't be changed. There will probably be some minor changes to the format of the submission and possibly some added requirements around the inlets and outlets. Unfortunately none of this is definitive yet since I'm not sure what CFD changes will be necessary. If there are rule changes and you're not able to submit anything at that point, we can probably manually fix any minor issues on our end if your submission met the old rules.

3) Could I anticipate the submission process (submission/check/resubmission after 48h) during next week?

Do you mean early submission? You can submit at any time - try the portal first, and if it isn't accepting submissions then just email me the file. As for the round 2 deadline, unfortunately there's nothing new since my last post.

4) In case race 3 date will be confirmed, can I use the same car of point 2 (without a new resubmission?)

Yes, anyone can nominate to use an entry from a previous round. Just let me know via email to confirm.

[CAEdevice]

Thank you Chris. If possible, I would need to anticipate not only the submission, but the check and the resubmission. After next Thursday I am not sure to have an internet connection and I will not have the possibility to use CAD for two weeks.

I have a car ready that is compliant with the 2016 rules (including cooling) and it will probably be even with simplified rules (no imposed flow, if a reasonable resultant force will be choosen), but I need to know if the rules will change for next round. In case of further delaying: the next race will be Moanco or Silverstone? The setting is quite different.

I can provide a step or a swx native prt (in addition to the stl), so the submission format would not be a issue.

[cdsavage]

In case of further delaying: the next race will be Moanco or Silverstone? The setting is quite different.

In case things are delayed to the point of needing to cancel a round, I think the next round should stay as Monaco, even if it ends up taking place at the round 3 date. This way there is some continuity from round 1.

[etsmc]

well actually getting a little excited now for the next race. A bit more development and now I can get some info from the OCCFD data I think I have just shaved another 6 seconds a lap off my Nurburgring time, so as long as my cooling issues are sorted and should get a time in the 386s woop!!!

[variante]

On Racecar Engineering:

...looks like the Allard J2X-C is coming back...with sidepods, this time.

Or has JJR actually built his car?

[Pierce89]

On Racecar Engineering:
https://scontent-mxp1-1.xx.fbcdn.net/t3 ... 7898_o.jpg
...looks like the Allard J2X-C is coming back...with sidepods, this time.

Or has JJR actually built his car?

wow!is that the car in this month's Aero bytes section? if so post someofthe little info boxes they provide.

[variante]

On Racecar Engineering:
https://scontent-mxp1-1.xx.fbcdn.net/t3 ... 7898_o.jpg
...looks like the Allard J2X-C is coming back...with sidepods, this time.

Or has JJR actually built his car?

wow!is that the car in this month's Aero bytes section? if so post someofthe little info boxes they provide.

They published that on Facebook. Unfortunately, I've got no R.E. subscription (yet), so that's all I have...

[Pierce89]

On Racecar Engineering:
https://scontent-mxp1-1.xx.fbcdn.net/t3 ... 7898_o.jpg
...looks like the Allard J2X-C is coming back...with sidepods, this time.

Or has JJR actually built his car?

wow!is that the car in this month's Aero bytes section? if so post someofthe little info boxes they provide.

They published that on Facebook. Unfortunately, I've got no R.E. subscription (yet), so that's all I have...

Well that's not the MIRA tunnel where they do aerobytes anyway(the MIRA tunnel isn't a rolling road unfortunately, so they give very low numbers on any cool modern racecar anyway. They showed a 2007 Honda f1 car to have a cl of~ -2.5 when it was probably at least ~ -3.3, but they explain this in the articles and you still see the real WT results of a range of interesting changes on a range of interesting race cars making for a freaking awesome series of articles. I've got years and years of RE in hard copy. The wife bitches all time about all the space they take up.

sorry for getting so far off topic guys.

[CAEdevice]

On Racecar Engineering:
https://scontent-mxp1-1.xx.fbcdn.net/t3 ... 7898_o.jpg
...looks like the Allard J2X-C is coming back...with sidepods, this time.

Or has JJR actually built his car?

wow!is that the car in this month's Aero bytes section? if so post someofthe little info boxes they provide.

They published that on Facebook. Unfortunately, I've got no R.E. subscription (yet), so that's all I have...

If the KVRC challange will not stop (Julien, is everything all right?) and if your car will be as fast as in Race01 you could have a subscription to RE next year

[variante]

Well that's not the MIRA tunnel where they do aerobytes anyway(the MIRA tunnel isn't a rolling road unfortunately, so they give very low numbers on any cool modern racecar anyway. They showed a 2007 Honda f1 car to have a cl of~ -2.5 when it was probably at least ~ -3.3, but they explain this in the articles and you still see the real WT results of a range of interesting changes on a range of interesting race cars making for a freaking awesome series of articles. I've got years and years of RE in hard copy. The wife bitches all time about all the space they take up.

Those aerobytes are an excellent reason to fill your house with paper! Good or interesting articles/papers/books about actual racecar aerodynamics are almost non existent, and R.E.'s aerobytes are one of those few.
Luckily, CFD programs can guarantee -let's say- a cultural self sufficiency about aerodynamics and spread the former despite the absurd lack of decent literature.

If the KVRC challange will not stop (Julien, is everything all right?) and if your car will be as fast as in Race01 you could have a subscription to RE next year

That "yet" was full of hope and optimism

[graham.reeds]

On Racecar Engineering:
https://scontent-mxp1-1.xx.fbcdn.net/t3 ... 7898_o.jpg
...looks like the Allard J2X-C is coming back...with sidepods, this time.

Or has JJR actually built his car?

I liked to a video of that car, in French, a few weeks ago.