Ergun 填充床压降

由粒径、孔隙率和物性可视化分解 Ergun 黏性/惯性压降项。

visual calculator多孔介质与流变

先看流动形态，再相信数字。

该工具把 CFD 设置转换为工况、尺度和主导效应提示。调节下方计算器，观察动态图与计算结果如何一起变化。

输入尺度

模型

判断

Ergunpacked bedporous mediapressure drop

公式

KaTeX rendered

\begin{aligned}\text{dp/dz = 150 mu (1-eps)\^{}2 U/(eps\^{}3 d\_p\^{}2) + 1.75 rho (1-eps) U\^{}2/(eps\^{}3 d\_p)}\end{aligned}

ASCII source

dp/dz = 150 mu (1-eps)^2 U/(eps^3 d_p^2) + 1.75 rho (1-eps) U^2/(eps^3 d_p)

superficial U (m/s)particle d_p (m)porosity epsbed length (m)rho (kg/m3)mu (Pa s)

inertial share 97.0%

Re_p

1596.800

viscous dp/dz

1.703e+4

inertial dp/dz

5.469e+5

total dp/dz

5.639e+5

Delta p (Pa)

5.639e+5

Ergun is a strong first estimate for porous-zone source terms in packed-bed CFD models.