forcesdefrottements.py

Created by alten01

Created on December 20, 2023

475 Bytes

FROTTEMENTS FLUIDES
vitesse faible : f=-kv
[k]=[F]/[V]=MT^-1
vitesse elevee : 
f=-1/2Cx phof S v^2

Re=pho*R*v/viscosite
regime visqueux si Re<1
regime turbulent sir Re 10^3 10^5


FROTTEMENTS SOLIDES
f=u*R

FROTTEMENTS VISQUEUX 
frottements visqueux :
dapres pfs : v = m/k g
frottements turbulents : 
v = sqrt(mg/2Cx*pho*S)

m/k = taux
plus taux est grd, plus la vitesse
limite est grde, et plus il faut
de temps pour converger vers cette 
vitesse

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