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titleDerivation


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See Derivation of Pressure Profile in Steady-State Homogeneous Pipe Flow @model.



Approximations
Incompressible pipe flow 

LaTeX Math Inline
body\rho(T, p) = \rho_0
with constant viscosity 
LaTeX Math Inline
body\mu(T, p) = \mu_0

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Pressure profilePressure gradient profileFluid velocityFluid rate
LaTeX Math Block
anchorPPconst
alignmentleft
p(l) = p_0 + \rho_0 \, g \, z(l)  
- \frac{j_m^2  f_0}{2 \, \rho_0 \, d} \cdot l
LaTeX Math Block
anchorgradP
alignmentleft
\frac{dp}{dl} = \rho_0 \, g \cos \theta(l) - \frac{j_m^2  f_0}{2 \, \rho_0 \, d}
LaTeX Math Block
anchor1
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q(l) =q_0 = \rm const
LaTeX Math Block
anchor1
alignmentleft
u(l) = u_0 = \frac{q_0}{A} = \rm const

where

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LaTeX Math Inline
body--uriencoded--f_0 = f(%7B\rm Re%7D_0, \, \epsilon)

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Darcy friction factor at inlet point (

LaTeX Math Inline
bodyl=0
)

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LaTeX Math Inline
body--uriencoded--\displaystyle %7B\rm Re%7D_0= \frac%7Bj_m \, d%7D%7B\mu_0%7D

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Reynolds number at inlet point (

LaTeX Math Inline
bodyl=0
)

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LaTeX Math Inline
body\mu_0 = \mu(T_0, p_0)

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Dynamic Fluid Viscosity at inlet point (

LaTeX Math Inline
bodyl=0
)

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titleDerivation

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Incompressible fluid 

LaTeX Math Inline
body\rho(T, p) = \rho_0 = \rm const
 means that compressibility vanishes 
LaTeX Math Inline
bodyc(p) = 0
 and fluid velocity is going to be constant along the pipeline trajectory 
LaTeX Math Inline
body--uriencoded--u(l) = u_0 = \frac%7Bq_0%7D%7BA%7D = \rm const
.

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LaTeX Math Inline
body\mu(T, p) = \mu_0 = \rm const

...

LaTeX Math Inline
body\theta(l) = \theta_0 = \rm const

Pressure Profile in GF-Proxy Pipe Flow @model

LaTeX Math Inline
body\theta(l) = \theta_0 = \rm const
LaTeX Math Inline
bodyf(T, p)=f_0 = \rm const

Pressure Profile in GFC-Proxy Pipe Flow @model

LaTeX Math Inline
body\theta(l) = \theta_0 = \rm const
LaTeX Math Inline
bodyf(T, p)=f_0 = \rm const
, 
LaTeX Math Inline
body--uriencoded--\

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rho(T, p) = \

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rho(T) \cdot (1+ c%5e*(T) \cdot p/p_0)

Pressure Profile in FC0-Proxy Pipe Flow @mode

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LaTeX Math Inline
body

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\rho(p)=

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\rho_0 = \rm const

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Equation 

LaTeX Math Block Reference
anchorPP
 becomes:

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anchorPP
alignmentleft

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,

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LaTeX Math Block Reference
anchorgradP

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LaTeX Math Inline
body--uriencoded--\displaystyle \cos \theta(l) = \frac%7Bdz(l)%7D%7Bdl%7D

 

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LaTeX Math Block Reference
anchorPPconst

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LaTeX Math Block Reference
anchorgradP

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LaTeX Math Inline
body

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f(

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T, p)=f_0 = \rm const

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Pressure Profile in G-Proxy Pipe Flow @model

Pressure Profile in G-Proxy Pipe Flow @model

Pressure Profile in GF-Proxy Pipe Flow @model

Pressure Profile in GF-Proxy Pipe Flow @model

Pressure Profile in GFC-Proxy Pipe Flow @model

Pressure Profile in GFC-Proxy Pipe Flow @model

Pressure Profile in FC0-Proxy Pipe Flow @model

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See also

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