Flow over a car - Immersed Boundary Method

This video shows some streamlines of the flow over a car prototype. It was made in Lab of Heat and Mass Transfer and Fluid Dynamics of Federal University of Uberlandia - Brazil - www.ltcm.mecanica.ufu.br

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Howto & Style

Tags:

• Flow
• over
• car

[pbs520]

Could you do a model to tests the golf ball effect as seen in Mythbusters? I think that the golf ball dimples only need to be placed in strategic areas. Refer to fighter plane vortex generators for insights. The idea is to improve fuel efficiency.

[LTCMFEMEC]

yes, we can simulate a golf ball, however, to place the dimples only in some regions of the ball, probably wouldn't give any improvement, due its rotation during "flight"...

[pbs520]

Sorry, I missed a key piece of information. I wanted to do a similar simulation on a CAR, and try to see what size and configuration of golf ball dimples on a CAR may reduce drag. Mythbusters, a tv show on Discovery Channel, showed a 12% fuel efficiency increase when they put golf ball dimples on a car.

[LTCMFEMEC]

Ah, ok, I've seen some tests with F1 cars, and also in some experiments with some planes of Airbus, something like using a shark skin like form in the wings that, in fact, decreases the drag and helps in the transition of the boundary layer...

[smazms]

lambo?

[LTCMFEMEC]

yes... almost :-)

[edyvnit]

which software you used for this simulation ?? actually i wanted to simulate flapping wings of ornithopters could you give me a suggestion ?

[vikolord]

thnx man! nice comments.

[blah222blah222]

I know this group LTCM-FEMEC. They used fortran to implement the code, and a kind of visualization software. =D

[vikolord]

yees, but ahm.. its a software isn't it?, it could be ANSYS, or MATLAB maaybe.. =s