Quote:
Originally Posted by aerohead
*Since the ground is mentioned,this will be a road vehicle?
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Yes. To keep it in the spirit of the forum
Quote:
Originally Posted by aerohead
*If it is a road vehicle,must it contain a source of locomotion along with the occupant?
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No. It is intended as a fun and quick experiment with shape and analysis, not a vehicle design.
Quote:
Originally Posted by aerohead
*It is to be operated only on a closed-course?*Closed-course vehicles would have a chance to utilize laminar profiles if operating solo,on a dead calm track day.
*The 'laminar' profiles would never work on a real roadway.
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Thanks for explanation as I was not familiar with closed-course. You can assume that it is operated on a closed-course. Since it is modelling based, you need to be aware that the model uses a turbulence model. I would be interested to see the difference in model prediction between a profile optimized for laminar flows and one optimized for transitioning/turbulent flows. I am assuming that the model will indicate that the latter is better - another limit of modelling...
Quote:
Originally Posted by aerohead
*We might mention Reynolds number operating conditions as they affect boundary layer type and both pressure drag and surface friction drag.
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Sounds good. Re = rho x U x L / mu where
rho = 1.205 kg/m3 and mu = 1.8e-5 kg/m.s
U is the travelling speed selected for the analysis
What is L ??? It could be a characteristic length taken as the longer of the height, width or length or based on the frontal area (L = sqrt(frontal area))?