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LaTeX Math Block
anchorrho_dif
alignmentleft
\frac{\partial (\rho \phi)}{\partial t} + \nabla \, ( \rho \, {\bf u}) = \sum_k m_k(t) \cdot \delta({\bf r}-{\bf r}_k)
LaTeX Math Block
anchorqk
alignmentleft
\int_{\Sigma_kGamma} \, \rho(p) \, {\bf u} \,  d {\bf A} = m_k\Gamma(t)

where

LaTeX Math Inline
body\Sigma_k

well-reservoir contact of the 

LaTeX Math Inline
bodyk
-th well

LaTeX Math Inline
body--uriencoded--d %7B\bf \Sigma%7D

normal vector of differential area on the well-reservoir contact, pointing inside wellbore

LaTeX Math Inline
bodym_k(t)

mass rate at 

LaTeX Math Inline
bodyk
-th well 
LaTeX Math Inline
bodym_k(t) = \rho(p) \cdot q_k(t)

LaTeX Math Inline
bodyq_k(t)

sandface flowrate at 

LaTeX Math Inline
bodyk
-th well 

LaTeX Math Inline
body\rho(p)

fluid density as function of reservoir fluid pressure 

LaTeX Math Inline
bodyp

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LaTeX Math Block
anchorpre_filnal
alignmentleft
\rho \, \phi \, c_t  \cdot \frac{\partial p}{\partial t} + \nabla \, ( \rho \, {\bf u}) = \rho \, \sum_k q_k(t) \cdot \delta({\bf r}-{\bf r}_k)
LaTeX Math Block
anchorqk
alignmentleft
\int_{\Sigma_kGamma} \, {\bf u} \,  d {\bf A} = q_k\Gamma(t)

where

LaTeX Math Inline
bodyc_t = с_\phi+ c

...

LaTeX Math Block
anchorpre_filnal
alignmentleft
 \phi \, c_t  \cdot \frac{\partial p}{\partial t} + \nabla  {\bf u}  
+ c \cdot ( {\bf u} \, \nabla p) =  \sum_k q_k(t) \cdot \delta({\bf r}-{\bf r}_k)
LaTeX Math Block
anchorqk
alignmentleft
\int_{\Sigma_kGamma} \, {\bf u} \,  d {\bf A} = q_kGamma(t)


See also

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Physics / Mechanics / Continuum mechanics / Fluid Mechanics / Fluid Dynamics / Pressure Diffusion / Pressure Diffusion @model / Single-phase pressure diffusion @model

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