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titleDerivation


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




Alternative forms

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LaTeX Math Block
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  \frac{dp}{dl} = \left(   \frac{dp}{dl} \right)_G +  \left(   \frac{dp}{dl} \right)_K  +  \left(   \frac{dp}{dl} \right)_f


LaTeX Math Block
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\left( \rho(p) -  j_m^2 \cdot c(p)   \right) \cdot  \frac{dp}{dl} = \rho^2(p) \, g \, \cos \theta(l)  - \frac{ j_m^2 }{2 d} \cdot  f(p)






where

LaTeX Math Inline
body--uriencoded--\displaystyle \left( \frac%7Bdp%7D%7Bdl%7D \right)_G


gravity losses

LaTeX Math Inline
body--uriencoded--\displaystyle \left( \frac%7Bdp%7D%7Bdl%7D \right)_K


kinematic losses

LaTeX Math Inline
body--uriencoded--\displaystyle \left( \frac%7Bdp%7D%7Bdl%7D \right)_f


friction losses


Approximations

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Pressure Profile in G-Proxy Pipe Flow @modelquardrature

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

Pressure Profile in GF-Proxy Pipe Flow @modelquardrature

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


Show If
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Pressure Profile in GFC-Proxy Pipe Flow @model



Show If
grouparax

algebraic equation




Show If
grouparax

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


Pressure Profile in Incompressible Quasi-Isothermal Proxy Pipe Flow @modelquardrature

LaTeX Math Inline
body\rho(p)=\rho_0 = \rm const
, 
LaTeX Math Inline
bodyT(t, l)=T(l)

Pressure Profile in Incompressible Isothermal Proxy Pipe Flow @modelclosed-form expression

LaTeX Math Inline
body\rho(p)=\rho_0 = \rm const
, 
LaTeX Math Inline
bodyT=T_0 = \rm const
 (isothermal)

Pressure Profile in GC-proxy static fluid column @modelclosed-form expression

LaTeX Math Inline
body\theta(l) = \theta_0 = \rm const
, 
LaTeX Math Inline
body\dot m = 0
 (no flow)

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