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.
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"...
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.
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...
Yea, I have heard the rough texture seems to be negligible. I was just wondering if the ratio of dimple to car size was an issue. The dimples used on Mythbusters were fairly large (at least 4 inches diameter). Perhaps there is something to the ratio that impacts Reynold's number (or something similar). Thanks for the info.
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.
pbs520 2 years ago
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"...
LTCMFEMEC 2 years ago
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.
pbs520 2 years ago
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...
LTCMFEMEC 2 years ago
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Yea, I have heard the rough texture seems to be negligible. I was just wondering if the ratio of dimple to car size was an issue. The dimples used on Mythbusters were fairly large (at least 4 inches diameter). Perhaps there is something to the ratio that impacts Reynold's number (or something similar). Thanks for the info.
pbs520 2 years ago
what software can make this simulations?
vikolord 2 years ago
It's not a specific comercial software. It's a code implementeded using finite volumes and immersed boudary method.
blah222blah222 2 years ago
yees, but ahm.. its a software isn't it?, it could be ANSYS, or MATLAB maaybe.. =s
vikolord 2 years ago
I know this group LTCM-FEMEC. They used fortran to implement the code, and a kind of visualization software. =D
blah222blah222 2 years ago
thnx man! nice comments.
vikolord 2 years ago
You forgot the air on the roof 3/5
chuming123 2 years ago
lambo?
smazms 2 years ago
yes... almost :-)
LTCMFEMEC 2 years ago
which software you used for this simulation ?? actually i wanted to simulate flapping wings of ornithopters could you give me a suggestion ?
edyvnit 2 years ago