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| \rho \, \phi \, c_t \cdot \frac{\partial p}{\partial t} + \nabla \, ( k \cdot \frac{\rho}{\mu} \, \nabla \, p) = 0 |
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| \frac{k}{\mu} \cdot \int_{\Sigma_k} \, {\bf \nabla } \, p \,cdot d {\bf A} = q_k(t) |
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Let's express the density via Z-factor:
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| \phi \, c_t \, \mu \cdot \frac{p}{\mu \, Z} \cdot \frac{\partial p}{\partial t} + \nabla \, ( k \cdot \frac{p}{\mu \, Z} \, \nabla \, p) = 0 |
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| \frac{k}{\mu} \cdot \int_{\Sigma_k} \, {\bf \nabla } \, p \,cdot d {\bf A} = q_k(t) |
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or
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| \phi \, c_t \, \mu \cdot \frac{\partial \Psi}{\partial t} + \nabla \, ( k \cdot \nabla \, \Psi) = 0 |
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| \frac{k}{\mu} \cdot \int_{\Sigma_k} \, {\bf \nabla p} \, p \cdot d {\bf A} = q_k(t) |
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where
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| body | --uriencoded--\displaystyle \Psi(p) =2 \, \int_0%5ep \frac%7Bp \, dp%7D%7B\mu(p) \, Z(p)%7D |
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| Pseudo-Pressure |
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