Khamsin Virtual Racecar Challenge 2014

[astracrazy]

@ variante, I agree it doesn't change much now but please let me know which you think doesn't follow the spirit of the rule and I'll explain. The rule isn't checked but the spirit of the rule must be followed

just a question guys, I'm thinking out loud. I wondering if we can and how hard it would be, to expand the race visual we have. For example, could you take rfactor and put in the submitted cars and set up an AI race between the cars but fix the result? I used to play rfactor a lot years ago so I know you can mod it, but is it possible and how hard would it be? no special features, but just a 3d race and make a video of it?

[variante]

Nope, i won't say exactly who or what part. And that's because the purpose of my observation was to draw attention to the respect of the regulations and the realism that this competion is based on. So i'm just exhorting you all not to take too much advantage of those areas that aren't explicitly covered by the regulations or rule checking (to avoid overcomplexity problems).

An example: i've discarded many interesting solutions concerning sidepods and cooling outlets simply because the full respect of the 75mm rule made those solutions not advantageous. If i had ignored (even partially) that rule, i would now have a better car.

This being said, i repeat that i'm not complaining and that the standings would have probably been the same anyway.

[CAEdevice]

just a question guys, I'm thinking out loud. I wondering if we can and how hard it would be, to expand the race visual we have. For example, could you take rfactor and put in the submitted cars and set up an AI race between the cars but fix the result? I used to play rfactor a lot years ago so I know you can mod it, but is it possible and how hard would it be? no special features, but just a 3d race and make a video of it?

I was thinking the same but with a different simulation software (Assetto Corsa). Great idea with many possible evolutions!

[astracrazy]

@variante ok i respect what your saying. Perhaps your referring to the recent renders? if so there was some illegal cars in there so maybe what you spotted was spotted. If not, and it is on the earlier pictures, you should of raised it with it me or asked if it was legal to change your car? Perhaps e-mail me so you can consider it for the last race?

@cae its an idea i want to look at to see if its possible (3d race). There has to be a limit though to how much work would be needed.

[variante]

Astra, don't worry about that. Your job has been great, and i don't feel like asking you to be more strict while checking that rule, because i know it would be an enormous effort for the entrants to heavily modify their cars at this point of the championship (just to see unchanged standings...).
It was just a "warning" (sounds too grave...), and something to take in consideration and clarify for the next season.

[RicME85]

As good as it would be to have a 3D race, I think it would be too much work to implement.
Last year I was looking at converting my car to use in Grand Prix 4 but it would of taken a load of work, partly because of the size of the model (if you load a GP4 or even Codemasters F1 car alongside our models you would barely see them, they are like ants in comparison) and you often need to break down various components for the game to recognise them.

[astracrazy]

I would agree ric i was just putting it out there. If someone said, actually would be quiet easy..........

@variante i doubt we will have that rule next year. Its one of those things which is pretty hard to check virtually let alone in sketchup so just the purpose of the rule had to be respected. Then of course where do you draw the line with that - i choose winglets, turning vanes, obvious sidepod shapes to purely create downforce etc. I'd imagine the rule to a t would show a number are illegal but would make no difference result wise (where the above would)

I'm keen to get everyones opinion in where they want KVRC to go. Formula type, rule level, tracks etc.

[CAEdevice]

@cae its an idea i want to look at to see if its possible (3d race). There has to be a limit though to how much work would be needed.

Assetto Corrsa (not officially released yet) should be quite easy to interact with. Maybe the same for RFactor, but I don't know it very deeply.

Generally talking, I think that if we choose a real simulator (not arcade, but pure simulation, as RFactor or AssettoCorsa), it would be easy to obtain a "best lap", with great graphics and realistic physics, for a single car. The difficult thing would be to make all cars run together without having troubles with the limits of the AI engine...

[CAEdevice]

Aero Coefficient vs Lap Time chart for the Nurburgring round (FYI: The KVRC best limit curve does not include results from Silverstone).

http://www.competition-car-engineering. ... ring14.jpg

Hi Machin, it seems to be a high downforce track, or not?

[machin]

Hi Machin, it seems to be a high downforce track, or not?

Yeah, I would go for a high downforce set-up for this track.

[julien.decharentenay]

Hi,

I just wanted to let you know that I (finally) made Khamsin compatible with SketchUp 2014... It is a long overdue update... I have also added some assistance to the installation of the third party. I would very much appreciate feedback on it - is it going in the right direction? Thoughts on how it could be improved?

At the moment, it is only available as a rbz archive, that you can download from http://www.hibouscientificsoftware.com. ... .1-012.rbz

I have made a request to be added to the SketchUp plugin developer group to allow distribution of Khamsin through the Extension Warehouse - it would make everyone's life easier. I am waiting to hear from SketchUp.

I will be looking at integrating the sourceforge repository for the parallel openFoam version (unfortunately it does not include swak4foam). My aim is that Khamsin directly downloads it and set it up if you are running a 64bit Windows OS... More news in the near future...

[CAEdevice]

I can't wait to test it ... but I'm tto busy now. Hope to find some time in the next week.

[julien.decharentenay]

For information I run a simulation based on a McLaren MP4 geometry that was circulated in another F1Technical thread - the source is a 3D file that was downloaded from the McLaren website where it was used as a 3D browsable viewer. The mesh is very coarse (around 30 to 50,000 surfaces).

The results - https://cfdapps.appspot.com/results.htm ... d8a0f05819 - are: Cd.A: 1.1547 m2 and Cl.A: 1.5337 m2, so nothing exceptional compared to the cars designed for the challenge.

See graph .

[CAEdevice]

Interesting! Thank you Julien

After the last race, I'm planning to test the effect of some details:

1) outlet flows from the sidepods
2) rake (1° or 2°)
3) negative pressure in the engine inlet

I think that they could improve the car efficiency

[julien.decharentenay]

After the last race, I was thinking of trying to take the McLaren bodywork and try a few mods to test (and improve) my design skills and see what I might be able to do. I will try to document it as I go along to share the information as well as get others input.