Pipe Flow Rate Calculator 1728

Flow Rate Formula:

\[ Q = A \times v \times 35.3147 \]

Flow Rate (cfs):

1. What is a Pipe Flow Rate Calculator?

Definition: This calculator estimates the volumetric flow rate in a pipe based on cross-sectional area and flow velocity.

Purpose: It helps engineers, plumbers, and fluid system designers determine the flow capacity of pipes in cubic feet per second.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ Q = A \times v \times 35.3147 \]

Where:

\( Q \) — Flow rate (cubic feet per second, cfs)
\( A \) — Cross-sectional area (square meters, m²)
\( v \) — Flow velocity (meters per second, m/s)
\( 35.3147 \) — Conversion factor (cfs per m³/s)

Explanation: The flow rate is calculated by multiplying area by velocity, then converting from cubic meters to cubic feet.

3. Importance of Flow Rate Calculation

Details: Accurate flow rate calculation ensures proper pipe sizing, system efficiency, and prevents issues like excessive pressure drops or inadequate flow.

4. Using the Calculator

Tips: Enter the pipe's cross-sectional area in m² and the fluid velocity in m/s. Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: How do I find the cross-sectional area?
A: For circular pipes, use \( A = \pi \times r^2 \) where r is the radius in meters.

Q2: What's a typical flow velocity?
A: For water in pipes, typical velocities range from 0.5-3 m/s depending on application.

Q3: Why convert to cubic feet per second?
A: cfs is a common unit in hydraulic engineering, especially in the US customary system.

Q4: Can I use this for gases?
A: Yes, but ensure velocity is appropriate for gas flow (typically higher than liquids).

Q5: Does this account for friction losses?
A: No, this calculates theoretical flow rate. Actual flow may be less due to friction and other factors.