germes de cavitation
germes de cavitation
germes de cavitation
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U p<br />
λ =<br />
p0<br />
− p<br />
l 1<br />
ρU<br />
d 2<br />
2<br />
Expérience <strong>de</strong> <strong>cavitation</strong><br />
seringue<br />
Ecoulement incompressible dans l'aiguille<br />
friction:<br />
Poiseuille :<br />
λ =<br />
p<br />
64<br />
Re<br />
ℓ<br />
120000<br />
100000<br />
80000<br />
60000<br />
40000<br />
20000<br />
-20000<br />
-40000<br />
-60000<br />
U<br />
0<br />
P (Pa)<br />
p 0<br />
P