[MVRC] Mantium Virtual Racecar Challenge 2018

Post here information about your own engineering projects, including but not limited to building your own car or designing a virtual car through CAD.
etsmc
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Joined: Wed Apr 04, 2012 12:20 pm

Re: [MVRC] Mantium Virtual Racecar Challenge 2018

Post by etsmc » Tue Apr 02, 2019 4:37 am

Yes Variante is certainly looking like a sure thing for the championship, he already has alot of development and understanding under his belt with what he was doing here viewtopic.php?f=14&t=27159

I am interested to see what sort of number people will be getting on their first car and how they progress. Also the gap between the top 3 and the rest of the field.
Will we see the cars producing more or less downforce than the LMP style cars and will we see the efficiency up there?

CAEdevice
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Joined: Thu Jan 09, 2014 2:33 pm
Location: Erba, Italy

Re: [MVRC] Mantium Virtual Racecar Challenge 2018

Post by CAEdevice » Tue Apr 02, 2019 7:52 am

etsmc wrote:
Tue Apr 02, 2019 4:37 am
Yes Variante is certainly looking like a sure thing for the championship, he already has alot of development and understanding under his belt with what he was doing here viewtopic.php?f=14&t=27159

I am interested to see what sort of number people will be getting on their first car and how they progress. Also the gap between the top 3 and the rest of the field.
Will we see the cars producing more or less downforce than the LMP style cars and will we see the efficiency up there?
I am sure the cars will produce less downforce and will be much less efficent (top teams from cl/cd around 7 to cl/cd around 3.7 or less considering the KVRC F1 cars)

LVDH
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Re: [MVRC] Mantium Virtual Racecar Challenge 2018

Post by LVDH » Tue Apr 02, 2019 8:48 am

etsmc wrote:
Thu Mar 28, 2019 3:47 am

How can I see the flow on a monitoring surface just like you have on the linked page?
https://mantiumchallenge.com/wp-content ... g_flow.png
It is pretty simple. You have to open up the stlSamples file in the system folder of your case. There you change

Code: Select all

surfaceFormat null;
to

Code: Select all

 surfaceFormat vtk;
and

Code: Select all

writeFields     false;
to

Code: Select all

writeFields     true;
Then you execute this command in the case folder:

Code: Select all

mpirun -np $nCPUs simpleFoam -postProcess -latestTime -parallel
You will then find vtk files in the postProcessing folder in the folders corresponding to the surfaces.


etsmc wrote:
Thu Mar 28, 2019 3:47 am
Is it possible to have this done in post-processing?
Yeah, no problem.



Today Richard sent me his first version of the CAD parts for the new season. There is still some work that needs to be done, but it was fantastic to see the first F1 parts on my computer this morning. It should not take too long for us any more to provide you with a first set of rules, so you can start designing.

etsmc
6
Joined: Wed Apr 04, 2012 12:20 pm

Re: [MVRC] Mantium Virtual Racecar Challenge 2018

Post by etsmc » Tue Apr 02, 2019 11:46 am

LVDH wrote:
Tue Apr 02, 2019 8:48 am
etsmc wrote:
Thu Mar 28, 2019 3:47 am

How can I see the flow on a monitoring surface just like you have on the linked page?
https://mantiumchallenge.com/wp-content ... g_flow.png
It is pretty simple. You have to open up the stlSamples file in the system folder of your case. There you change

Code: Select all

surfaceFormat null;
to

Code: Select all

 surfaceFormat vtk;
and

Code: Select all

writeFields     false;
to

Code: Select all

writeFields     true;
Then you execute this command in the case folder:

Code: Select all

mpirun -np $nCPUs simpleFoam -postProcess -latestTime -parallel
You will then find vtk files in the postProcessing folder in the folders corresponding to the surfaces.


etsmc wrote:
Thu Mar 28, 2019 3:47 am
Is it possible to have this done in post-processing?
Yeah, no problem.



Today Richard sent me his first version of the CAD parts for the new season. There is still some work that needs to be done, but it was fantastic to see the first F1 parts on my computer this morning. It should not take too long for us any more to provide you with a first set of rules, so you can start designing.
:o cool thanks. This is awsome should help with development. So close i can feel that sense of dissapointment after the first race and i am so far behind. . :D

machin
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Joined: Tue Nov 25, 2008 1:45 pm

Re: [MVRC] Mantium Virtual Racecar Challenge 2018

Post by machin » Thu Apr 04, 2019 1:03 pm

etsmc wrote:
Tue Apr 02, 2019 11:46 am
So close i can feel that sense of dissapointment after the first race and i am so far behind. . :D
Positive attitude! :D

On a different topic: Now I've had a play with it I can confirm the statements made by Matteo and others: FREECAD seems to be a really good free alternative to Solidworks.... definitely recommended to anyone who wants to have a go at Parametric modelling...
COMPETITION CAR ENGINEERING -Home of VIRTUAL STOPWATCH

CAEdevice
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Joined: Thu Jan 09, 2014 2:33 pm
Location: Erba, Italy

Re: [MVRC] Mantium Virtual Racecar Challenge 2018

Post by CAEdevice » Thu Apr 04, 2019 2:33 pm

machin wrote:
Thu Apr 04, 2019 1:03 pm
etsmc wrote:
Tue Apr 02, 2019 11:46 am
So close i can feel that sense of dissapointment after the first race and i am so far behind. . :D
Positive attitude! :D

On a different topic: Now I've had a play with it I can confirm the statements made by Matteo and others: FREECAD seems to be a really good free alternative to Solidworks.... definitely recommended to anyone who wants to have a go at Parametric modelling...
Yes, it is free and open source. The new assembly workbench (after release 0.18) is very promising (assembly has always been a weak point of FreeCAD). Parametric CAD is a bit slower when we start a model from zero, but it improves "fine tuning" process very much.

There is an interesting CFD module (very rough, nothing to do with MantiumFlow refined settings about mesh, rotating wheels, turbolence models) but enough for a quick check during the very early part of the design.

https://www.freecadweb.org/wiki/Sandbox:CFD

Alonso Fan
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Joined: Sat Apr 06, 2013 5:21 pm

Re: [MVRC] Mantium Virtual Racecar Challenge 2018

Post by Alonso Fan » Thu Apr 04, 2019 2:59 pm

Thanks for the info

Definitely intend to have a look into this
MVRC - SHM Racing

LVDH
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Re: [MVRC] Mantium Virtual Racecar Challenge 2018

Post by LVDH » Fri Apr 05, 2019 10:41 am

Richard got a hang of FreeCAD pretty quickly and his model look quiet good now. If you guys want we can release the FreeCAD as well as the step and stl files as soon as we are "done".
I am not sure it is the best way to design a car. I am intending to release a video about designing a car in Blender. With Blender it is much easier to create crazy shapes and the stl files are later really nice.

CAEdevice
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Joined: Thu Jan 09, 2014 2:33 pm
Location: Erba, Italy

Re: [MVRC] Mantium Virtual Racecar Challenge 2018

Post by CAEdevice » Fri Apr 05, 2019 12:42 pm

I am curious aboit the difference between Formula M and Formula 1 rules. We will have a stepped floor? The rear wing and engine cover will have that mandatory surfaces only useful for the sponsors?

machin
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Joined: Tue Nov 25, 2008 1:45 pm

Re: [MVRC] Mantium Virtual Racecar Challenge 2018

Post by machin » Fri Apr 05, 2019 12:55 pm

Essentially it will be VERY close to F1 rules.... but instead of the complicated rule book we have a quite detailed set of volumes which you must keep within; that stops you from straying too far from a real F1 car. In the current draft of the rules we have a stepped floor; 90% of the floor will be a given part which you can’t change... Andre and I will be making the final tweaks very soon...
COMPETITION CAR ENGINEERING -Home of VIRTUAL STOPWATCH

CAEdevice
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Joined: Thu Jan 09, 2014 2:33 pm
Location: Erba, Italy

Re: [MVRC] Mantium Virtual Racecar Challenge 2018

Post by CAEdevice » Fri Apr 05, 2019 1:24 pm

machin wrote:
Fri Apr 05, 2019 12:55 pm
90% of the floor will be a given part which you can’t change
Good idea. But you will include the diffuser too?
The template and the "3D rulebook" will be provided only as STL or also as STEP?

machin
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Joined: Tue Nov 25, 2008 1:45 pm

Re: [MVRC] Mantium Virtual Racecar Challenge 2018

Post by machin » Fri Apr 05, 2019 1:31 pm

As Andre suggested above; I think the files will be released as STEP, STL and FreeCAD.

I don’t want to say too much about the details about the rules until I’ve discussed them with Andre... but we are pretty close!
COMPETITION CAR ENGINEERING -Home of VIRTUAL STOPWATCH

CAEdevice
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Joined: Thu Jan 09, 2014 2:33 pm
Location: Erba, Italy

Re: [MVRC] Mantium Virtual Racecar Challenge 2018

Post by CAEdevice » Fri Apr 05, 2019 1:38 pm

machin wrote:
Fri Apr 05, 2019 1:31 pm
As Andre suggested above; I think the files will be released as STEP, STL and FreeCAD.
FreeCAD native! Thanks! =D>

Alonso Fan
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Joined: Sat Apr 06, 2013 5:21 pm

Re: [MVRC] Mantium Virtual Racecar Challenge 2018

Post by Alonso Fan » Fri Apr 05, 2019 4:25 pm

Just checked out freecad. I'm sold...

... I know I know its free

It's good that the rules are new. I don't have to go round looking for ways to port sketchup models to freecad now. And designing an f1 car shape will be much easier than the lmp cars were. Always struggled with those front fenders in solidworks
MVRC - SHM Racing

rjsa
69
Joined: Fri Mar 02, 2007 2:01 am

Re: [MVRC] Mantium Virtual Racecar Challenge 2018

Post by rjsa » Sat Apr 06, 2019 7:58 am

Have a look at fusion360. It’s free if you say you’re a hobbist.
It has TSplines, that will work much like the subdivision surfaces on blender.