Ergun Packed Bed Pressure drop, Reynolds number, and porosity for packed catalyst beds ⬇ Case JSON ⬇ Workspace ⬆ Import Clear cacheCase 1+ New Duplicate Delete CompareInputs Preset Case name Porosity mode From densities User ε ε = 0.40ρ material cg/dlcg/Lcg/mldg/dldg/Ldg/mlfg/dlfg/Lfg/mlg/cm³g/dlg/ft³g/in³g/Lg/mlg/mm³g/m³kg/cm³kg/lkg/mm³kg/m³kip/ft³kip/in³kip/yd³lb/cm³lb/ft³lb/in³lb/mm³lb/m³lb/yd³lbm/cm³lbm/ft³lbm/in³lbm/mm³lbm/m³lbm/yd³mg/dlmg/Lmg/mlmg/m³ng/dlng/Lng/mlpg/dlpg/Lpg/mlppg (imp.)ppg (U.S.)slug/cm³slug/ft³slug/in³slug/mm³slug/m³t/cm³t/ft³t/in³t/mm³t/m³µg/dlµg/Lµg/mlµg/m³ ρ bulk cg/dlcg/Lcg/mldg/dldg/Ldg/mlfg/dlfg/Lfg/mlg/cm³g/dlg/ft³g/in³g/Lg/mlg/mm³g/m³kg/cm³kg/lkg/mm³kg/m³kip/ft³kip/in³kip/yd³lb/cm³lb/ft³lb/in³lb/mm³lb/m³lb/yd³lbm/cm³lbm/ft³lbm/in³lbm/mm³lbm/m³lbm/yd³mg/dlmg/Lmg/mlmg/m³ng/dlng/Lng/mlpg/dlpg/Lpg/mlppg (imp.)ppg (U.S.)slug/cm³slug/ft³slug/in³slug/mm³slug/m³t/cm³t/ft³t/in³t/mm³t/m³µg/dlµg/Lµg/mlµg/m³Vessel ID D "'AauchcmdamDMdmfathomfmftftUSGmhhhhmink'kftklykmkpckydk′lymmimilMlymmMmMpcnmNMnmipcpicapicapmptptR⊙shackletwipuaydŵinµm′″ Bed height L "'AauchcmdamDMdmfathomfmftftUSGmhhhhmink'kftklykmkpckydk′lymmimilMlymmMmMpcnmNMnmipcpicapicapmptptR⊙shackletwipuaydŵinµm′″ Particle dₚ "'AauchcmdamDMdmfathomfmftftUSGmhhhhmink'kftklykmkpckydk′lymmimilMlymmMmMpcnmNMnmipcpicapicapmptptR⊙shackletwipuaydŵinµm′″ Sphericity Φₚ Mass flow ṁ cg/dcg/scg/Sdag/ddag/sdag/Sdg/ddg/sdg/Sg/dg/hg/sg/Shg/dhg/shg/Skg/dkg/hkg/minkg/skg/Slb/dlb/hlb/minlb/sMg/dmg/dmg/smg/SMlb/dMlb/hMlb/minMlb/sng/dng/sng/Sshort tn/ht/dt/hµg/dµg/sµg/S Fluid density ρf cg/dlcg/Lcg/mldg/dldg/Ldg/mlfg/dlfg/Lfg/mlg/cm³g/dlg/ft³g/in³g/Lg/mlg/mm³g/m³kg/cm³kg/lkg/mm³kg/m³kip/ft³kip/in³kip/yd³lb/cm³lb/ft³lb/in³lb/mm³lb/m³lb/yd³lbm/cm³lbm/ft³lbm/in³lbm/mm³lbm/m³lbm/yd³mg/dlmg/Lmg/mlmg/m³ng/dlng/Lng/mlpg/dlpg/Lpg/mlppg (imp.)ppg (U.S.)slug/cm³slug/ft³slug/in³slug/mm³slug/m³t/cm³t/ft³t/in³t/mm³t/m³µg/dlµg/Lµg/mlµg/m³ Viscosity μ cPlb/ft·slbf·s/ft²lbf·s/in²mPaSmPa·sNs/m²PPaSPa·sreynµPaSµPa·s Notes Calculate Calculate all Results Run Calculate to see results.