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maybe silly question but is there somewhere similar software like CFD and if there is tutorial about that? I would like to start learning this stuff

A really good writeup from Scarbs on general stuff in F1 design and aero http://scarbsf1.com/blog1/2013/12/30/to ... eo-images/

F1NAC wrote:maybe silly question but is there somewhere similar software like CFD and if there is tutorial about that? I would like to start learning this stuff

Look at openfoam.org where you can find software to download and tutorials in the documentation.

I am trying to learn it as well, but I am not sure that openfoam can do what I want to do: I want to model a rotating bicycle front wheel moving over the ground in still (relative to the ground) air and then in cross-wind conditions. I will start with wheels that I already own and, presuming I get reasonable answers for how they behave, progress to wheels I am considering buying.

As far as I can tell no-one is doing CFD on rotating bicycle wheels moving over the ground, so presumably it is very difficult. Any hints are welcome.

WillerZ wrote:

F1NAC wrote:maybe silly question but is there somewhere similar software like CFD and if there is tutorial about that? I would like to start learning this stuff

Look at openfoam.org where you can find software to download and tutorials in the documentation.

I am trying to learn it as well, but I am not sure that openfoam can do what I want to do: I want to model a rotating bicycle front wheel moving over the ground in still (relative to the ground) air and then in cross-wind conditions. I will start with wheels that I already own and, presuming I get reasonable answers for how they behave, progress to wheels I am considering buying.

As far as I can tell no-one is doing CFD on rotating bicycle wheels moving over the ground, so presumably it is very difficult. Any hints are welcome.

Sure they are. I only use STARccm+ though so no experience with openfoam unfortunately.

Just shared by Craig Scarborough, saying that this CFD work is done by Nick Wirth Research.
#AutosportShow

WillerZ wrote:

F1NAC wrote:maybe silly question but is there somewhere similar software like CFD and if there is tutorial about that? I would like to start learning this stuff

Look at openfoam.org where you can find software to download and tutorials in the documentation.

I am trying to learn it as well, but I am not sure that openfoam can do what I want to do: I want to model a rotating bicycle front wheel moving over the ground in still (relative to the ground) air and then in cross-wind conditions. I will start with wheels that I already own and, presuming I get reasonable answers for how they behave, progress to wheels I am considering buying.

As far as I can tell no-one is doing CFD on rotating bicycle wheels moving over the ground, so presumably it is very difficult. Any hints are welcome.

OpenFOAM can do this.

Very good insight form scarbs.

http://digital.motorsportmonday.com/lau ... 92&pnum=20

TotalSim use OpenFOAM for all our motorsport analysis and work with the british cycling team. http://www.totalsimulation.co.uk

WillerZ - The rotating wheels/mesh stuff within OpenFOAM is possible but its not straightforward. I would try some non rotating mesh wheels with an RRF type approach first. This gives you a pretty good approximation for most applications. There is a pretty cool video at the link below of a cyclist modelled using OpenFOAM.
http://www.totalsimulation.co.uk/wp/por ... shcycling/

hi guys

does anyone know if its possible (and how) to show the location of drag in paraview?

I've seen graphs which are possible which show the distance of the model along x then y shows the amount of downforce i.e how its distributed. not that i know how to do that either (heads up would be good if anyone knows)

what i'm trying to find is something similar but for drag. i've got a figure for the whole model, but i want to know how this is distributed. i.e is it all coming from the back, is it equal etc etc.

does anyone know if this is possible and how, or ways of doing this?

I managed to get hold of the mp4-29 model from the Mclaren website as an .OBJ if anyone wants to do some CFD work.

https://www.dropbox.com/s/cnsimi7cnnyyy0t/Mclaren.obj

Anon123 wrote:I managed to get hold of the mp4-29 model from the Mclaren website as an .OBJ if anyone wants to do some CFD work.

https://www.dropbox.com/s/cnsimi7cnnyyy0t/Mclaren.obj

Nice, but unusable in its current format as you cannot select/work with individual parts.

pwlucas wrote:

WillerZ wrote:

F1NAC wrote:maybe silly question but is there somewhere similar software like CFD and if there is tutorial about that? I would like to start learning this stuff

Look at openfoam.org where you can find software to download and tutorials in the documentation.

I am trying to learn it as well, but I am not sure that openfoam can do what I want to do: I want to model a rotating bicycle front wheel moving over the ground in still (relative to the ground) air and then in cross-wind conditions. I will start with wheels that I already own and, presuming I get reasonable answers for how they behave, progress to wheels I am considering buying.

As far as I can tell no-one is doing CFD on rotating bicycle wheels moving over the ground, so presumably it is very difficult. Any hints are welcome.

OpenFOAM can do this.

it is a bit more involved .To my knowledge MRF (Moving Reference Frame )is the buzzword you are looking for .I know CFD for Axial fans in Automotive applications use it with success.The Video below says Ansys xflow can do without MRF :



[youtube] http://www.youtube.com/watch?feature=pl ... 5belVt85hs [/youtube]
http://www.youtube.com/watch?v=YvE7IfmqTTg

Anon123 wrote:I managed to get hold of the mp4-29 model from the Mclaren website as an .OBJ if anyone wants to do some CFD work.

https://www.dropbox.com/s/cnsimi7cnnyyy0t/Mclaren.obj

How valid is this data? I took a look on it, and after some smoothing, it looks very good. And the amount of detail is incredible. But I suppose this is not original McLaren data?

MadMatt wrote:

Anon123 wrote:I managed to get hold of the mp4-29 model from the Mclaren website as an .OBJ if anyone wants to do some CFD work.

https://www.dropbox.com/s/cnsimi7cnnyyy0t/Mclaren.obj

Nice, but unusable in its current format as you cannot select/work with individual parts.

An easy method is to import it in Star CCM+ and split it by curves. Then you can use it.

Anybody who uses Star-CCM+, how do you find aero balance and/or loading on the tires?