Flow Number (Nq) Calculation
Calculate the Flow Number (Nq) and Reynolds Number (Re) of an impeller to evaluate its pumping capacity and verify turbulent flow conditions.
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1. Define Input Parameters
2. Engineering Output
Rotational Speed (N)
- rev/s
- rev/s
Impeller Diameter Cubed (D3)
- m^3
- m^3
Reynolds Number (Re)
- dimensionless
- dimensionless
Flow Number (N_q)
- dimensionless
- dimensionless
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Download Offline Excel CalculationContext & Assumptions
The Flow Number (Nq) is a dimensionless parameter essential in process engineering for characterizing the pumping capacity of an impeller. It serves as a critical metric for evaluating how effectively an impeller moves fluid relative to its rotational speed and physical dimensions. In industrial mixing applications, Nq is used alongside the Power Number (Po) to determine the overall pumping efficiency of a system.
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