ToolFusion

Calculate pump specific speed

Calculate pump specific speed.

Engineering Verified

Quick Answer

The calculate pump specific speed computes n_s from the input values you provide.

Calculator

n_s
—

ToolFusion Engineering Network

ToolFusion Engineering Network

Access thousands of engineering calculators, standards, and design tools. Join the ToolFusion network for comprehensive engineering resources.

Explore ToolFusion

Result Interpretation

Calculate pump specific speed computes n_s in 1 using the defined engineering formula and the input values provided. No universal acceptance threshold is defined by this calculator.

Worked Example

default_test

Given:

  • h_head = 20
  • n_pump = 1450
  • q_flow = 0.05

Expected Result:

  • n_s = 34.283133326365

Engineering Interpretation:

Under the given input conditions, the calculated result is: n_s = 34.283133326365.

The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from deterministically validated test cases.

Formula / Method

n_s = n_pump * sqrt(q_flow) / pow(h_head, 0.75)

n_s.

Variables

SymbolLabelRoleDescription
n_pump n_pump INPUT n_pump
q_flow q_flow INPUT q_flow
h_head h_head INPUT h_head
n_s n_s OUTPUT n_s

Calculation Steps

  1. Enter the n_pump in rpm.
  2. Enter the q_flow in m^3/s.
  3. Enter the h_head in m.
  4. Read the n_s (1) from the results.

Frequently Asked Questions

What does this calculator calculate?

The Calculate pump specific speed estimates n_s based on the input parameters you provide

Why is n_pump important in this calculation?

n_pump is directly proportional to n_s. When you enter n_pump in rpm, the calculator uses it in the engineering formula to compute the output

How should I interpret the result n_s?

The calculator outputs n_s. The result is computed directly from the input values using the defined engineering formula

What units should I use for the inputs?

Enter each value in the units shown next to the input field: n_pump (rpm), q_flow (m^3/s), h_head (m). Make sure all inputs use the specified units for consistent results

What assumptions does this calculator use?

This calculator uses automatically validated engineering formulas. Results are approximate and should be validated against site-specific conditions, applicable codes, and professional engineering judgment

Related Tools

Browse More Tools

Explore the full index of engineering calculators on this vertical site.