1. What is a Water Pressure vs Flow Rate Calculator?

Definition: This calculator estimates the flow rate of water based on pressure and a system-specific constant.

Purpose: It helps engineers, plumbers, and irrigation specialists understand the relationship between pressure and flow in fluid systems.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Flow \) — Flow rate (gallons per minute)
• \( k \) — System-specific flow constant
• \( Pressure \) — Water pressure (pounds per square inch)

Explanation: The flow rate is proportional to the square root of the pressure, with the constant accounting for system characteristics.

3. Importance of Pressure-Flow Relationship

Details: Understanding this relationship helps in designing efficient piping systems, irrigation systems, and fire suppression systems.

4. Using the Calculator

Tips: Enter the system's flow constant (k) and the pressure in psi. Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: How do I determine the flow constant (k)?
A: The constant is system-specific and can be determined experimentally by measuring flow at a known pressure.

Q2: Why does flow depend on the square root of pressure?
A: This relationship comes from the Bernoulli equation and is typical for flow through orifices and pipes.

Q3: Does this work for all fluids?
A: The basic relationship holds, but the constant would change for different fluids due to viscosity differences.

Q4: How accurate is this calculation?
A: It provides a good estimate but actual systems may vary due to factors like pipe roughness and fittings.

Q5: When would this relationship not apply?
A: At very high velocities where turbulence becomes significant, or in systems with significant elevation changes.