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Pressure profilePressure gradient profile


LaTeX Math Block
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p(l) = p_s + \rho \, g \, z(l) - \frac{\rho_s \, q_s^2 }{2 A^2 d} \, f_s \, l



LaTeX Math Block
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\frac{dp}{dl} = \rho \, g \sin \theta(l) - \frac{\rho_s \, q_s^2 }{2 A^2 d} \, f_s 


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\sin \theta(l) = \frac{dz(l)}{dl}

trajectory deviation


The first term in 

LaTeX Math Block Reference
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defines the hydrostatic column of static fluid while the last term defines the friction losses under fluid movement:

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