Minimum Fluidization Velocity Calculator
Calculates the minimum fluidization velocity (umf) for solid particles in a fluidized bed using the Ergun equation and Archimedes number.
📖 Need the theory? Read the methodology, assumptions, and equations in the full reference guide.
1. Define Input Parameters
2. Engineering Output
Archimedes number (Ar)
- dimensionless
- dimensionless
Ergun coefficient A (A)
- dimensionless
- dimensionless
Ergun coefficient B (B)
- dimensionless
- dimensionless
Reynolds number at minimum fluidization (Re_mf)
- dimensionless
- dimensionless
Minimum fluidization velocity (u_mf)
- m/s
- m/s
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Download Offline Excel CalculationContext & Assumptions
The minimum fluidization velocity is a fundamental parameter in process engineering for designing efficient fluidized bed reactors and freezers. It represents the critical point where the upward drag force of a fluid balances the weight of the solid particles, enabling optimal heat and mass transfer.
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