压降

Nonlinear relationship of the pressure drop on velocity for the permeable media equation

∆ p = - (D μ U + \frac{1}{2} I ρ {|\begin{matrix} U \end{matrix}|}^{2}) \cdot L

Δp[Pa]	压降
μ[Pa.s]	流体的动力粘度
U[m/s]	流体速度
D[1/m²]	达西系数
I[1/m]	惯性系数
ρ[kg/m³]	流体密度
L[m]	Permeable media length in the flow direction

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