1. What is Flow Rate?

Flow rate (Q) is the volume of fluid that passes through a given surface per unit time. It represents the slope of the volume vs time graph in fluid dynamics and engineering applications.

2. How Does the Calculator Work?

The calculator uses the fundamental flow rate equation:

Where:

• \( Q \) — Flow rate (m³/s)
• \( \Delta V \) — Change in volume (m³)
• \( \Delta t \) — Change in time (s)

Explanation: The equation calculates the slope of the volume vs time graph, which directly gives the flow rate.

3. Importance of Flow Rate Calculation

Details: Flow rate is essential in designing piping systems, calculating pump requirements, and analyzing fluid dynamics in various engineering applications.

4. Using the Calculator

Tips: Enter the volume change in cubic meters (m³) and time change in seconds (s). Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What units should I use?
A: The calculator uses SI units (m³ for volume, s for time), but you can convert from other units before entering values.

Q2: Can I use this for gases?
A: Yes, as long as you're using consistent volume units (standard cubic meters for gases).

Q3: What if my graph isn't linear?
A: This calculates average flow rate. For instantaneous flow rate, you'd need the derivative at a specific point.

Q4: How accurate is this method?
A: Accuracy depends on the precision of your volume and time measurements.

Q5: Can I calculate reverse (find volume from flow rate)?
A: Yes, volume = flow rate × time, for constant flow rates.