Ensure the lower impeller clearance from the tank bottom is at least one impeller diameter ( ) to prevent dead zones.

This section calculates the hydraulic performance.

Next comes the core: hydrodynamic sizing. The repack lays out familiar correlations—power number (Np) tied to impeller type, Reynolds number to determine flow regime, and impeller diameter as a fraction of tank diameter. Behind the scenes, formulas dynamically switch between laminar and turbulent regimes, swapping in the correct Np and flow coefficient. Conditional formatting highlights when an assumed regime changes, nudging you to review assumptions.

: Defined by the fluid properties (density and viscosity) and the required mixing intensity.

A "repacked" professional XLS must go beyond process and include mechanical safety. . This determines the shaft diameter requirement.

This article explores the fundamental calculations, the advantages of using a dedicated agitator design calculation xls , and how to approach impeller re-packing. 1. Fundamentals of Agitator Design Calculations

Agitator design is critical safety equipment.

This final step ensures the agitator can be built safely.

For high-viscosity applications (laminar flow), the ratio increases: