The design and calculation of an agitator involve determining the power required to move a fluid and ensuring the mechanical integrity of the shaft. Standard verified methods rely on fluid properties, vessel geometry, and dimensionless numbers such as the Reynolds number ( cap N sub cap R e end-sub ) and Power number ( cap N sub p 1. Identify Fluid and Vessel Parameters Begin by collecting essential data for the application: Fluid Properties: ) and Viscosity ( Vessel Geometry: Tank diameter ( ) and liquid height ( ). A typical ratio is between Impeller Details: Type (e.g., Marine Propeller Rushton Turbine ), diameter ( cap D sub a ), and rotational speed ( ) in revolutions per second. Verito Engineering Private Limited 2. Determine the Flow Regime Calculate the impeller Reynolds number to determine if the flow is laminar ( ), transitional, or turbulent (
If you are designing for a professional project, you must verify your calculations against a standard. agitator design calculation pdf download verified
cap N sub cap R e end-sub equals the fraction with numerator cap D sub a squared center dot cap N center dot rho and denominator mu end-fraction cap D sub a : Impeller diameter ( : Rotational speed ( : Fluid density ( : Dynamic viscosity ( Power Required ( : Calculated for a baffled tank using the Power Number ( cap N sub p ), which depends on the impeller type. The design and calculation of an agitator involve
The heart of the design is selecting the right hardware to move the fluid: Impeller Type Power Requirements The heart of the design is
) to ensure the shaft can handle torque and radial forces without yielding.
covering circular flow speed, torque, and shear stress calculations. Agitator Design Spreadsheet (PVtools) : A specialized spreadsheet and PDF tool