This is the foundation of your calculator. Define your process variables clearly: Enter the fluid density ( ) and dynamic viscosity (
Factors in tank diameter, liquid height, and the use of baffles to provide accurate power numbers. Available XLS Templates and Resources Tank agitator power calculation - My Engineering Tools agitator design calculation xls
The following data must be entered into the spreadsheet interface (typically Sheet 1: 'Inputs'). This is the foundation of your calculator
To prevent catastrophic mechanical failure due to resonance, the operating speed must be safely away from the shaft's natural frequency. 💓 Critical Speed ( Nccap N sub c To prevent catastrophic mechanical failure due to resonance,
The .xls format excels here because it allows for iterative "what-if" scenarios: changing impeller diameter automatically updates Reynolds number, power, and shaft stress simultaneously.
Based on the impeller type, a Power Number ($N_p$) is selected from a standard lookup table.