dstther.py

Created on June 02, 2022

619 Bytes

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PPSO
conserva° debot massiq Dm1=Dm2

demo PPSO
1pTh dU+dEm=dWext+dQext
dU=U(t+dt)-U(t)=Upc(t+dt)+dmu2)-(Upc(t)+dmu1)=dm(u2-u1)
dEm=dm(ep2-ep1+ec2-ec1)
sQext=qedm 
sWext=sW(pre°amont)+dW(p°aval)+dWi
      p1v1dm>O      p2v2dm<O   widm
widm:travail reçu par les part.mob
h2=u2+p2v2  h1=u1+p1v1  h2-h1=wi+qe

PPSO delt(h)=wi+qe
compresseur:wi>O turbine<O
delt(S)=Se+Sc

Dm=dm/dt=uSc
Pi=sWi/dt=Wi
Dm=(hé-h1)=Pi+Pth
Pth:SQe/dt
pour la détente de J-Thom delt(h)=O

th moment xv=v-vL/vv-vL=LM/LV

état1      état2    delt(h)=mlf
solid   ->  liq    =>
p=f(T),T   p=f(T),T  del(S)=mlf/T

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dstther.py