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UE6 - Physique

Mécanique des Fluides

XFormule
Q= S1V1=S2V2=cste=ΔV/Δt
Equation de Bernoulli PA+ρgzA+1/2ρvA=PB+ρgzB+1/2ρvB=cste
Loi statique de Pascal P+ρgz=E
3è loi Pascal P+ρgz=cste ΔP+ρgΔz=0
Théorème Bernoulli v= hD= sqrt(2ghD) v²/2g
Formule de Newton dF=-ηdS.dv/dx
1 Poise = 0,1 Poiseuille
Formule de Reynolds Re=vρr/η
Loi de Poiseuille PA+ρgzA+1/2ρvA=PB+ρgzB+1/2ρvB+ΔP
Résistance mécanique R=8ηl/πr^4
Perte de charge ΔP=D.R=D.8ηl/πr^4
Débit D=Sv
Puissance Π Π=ΔP.D=RD²
Résistance conduit en série Rtot=ΣRi
Résistance conduits en parallèle 1/Rtot=Σ1/Ri
Résistance relative artérioles 41%
Résistance relative capillaires 27%
Résistance totales des veines 7%
Résistance totales des artères 93%
Gravité sténose à l'effort à partir de 50%
Surface sphère 4πR²
Created by: Flavien
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