Home
Back
GPM to PSI Formula:
| From: | To: |
The GPM to PSI conversion calculates water pressure from flow rate for a specific nozzle diameter. This relationship is essential in fluid dynamics, irrigation systems, firefighting, and hydraulic engineering applications.
The calculator uses the formula:
Where:
Explanation: The formula demonstrates the inverse relationship between pressure and the square of nozzle diameter, showing how pressure increases dramatically as nozzle size decreases for a given flow rate.
Details: Understanding the relationship between flow rate and pressure is crucial for designing efficient fluid systems, ensuring proper nozzle selection, and optimizing performance in various applications from irrigation to industrial processes.
Tips: Enter flow rate in gallons per minute and nozzle diameter in inches. Both values must be positive numbers. The calculator will compute the corresponding water pressure in PSI.
Q1: What does GPM stand for?
A: GPM stands for Gallons Per Minute, a unit of flow rate measurement commonly used in fluid dynamics.
Q2: Why is nozzle diameter squared in the formula?
A: The diameter is squared because pressure is inversely proportional to the cross-sectional area of the nozzle, and area is proportional to the square of the diameter.
Q3: What is the practical application of this calculation?
A: This calculation is used in firefighting nozzle selection, irrigation system design, hydraulic engineering, and any application where water pressure needs to be determined from flow rate.
Q4: How accurate is this formula?
A: The formula provides a good approximation for water flow through circular nozzles, but actual results may vary based on nozzle design, fluid viscosity, and system efficiency.
Q5: Can this formula be used for other fluids?
A: While the basic principle applies, different fluids have different viscosities and densities, so the constant (29.7) would need adjustment for accurate calculations with other fluids.