Volumetric Flow Rate From Area And Velocity

Volumetric Flow Rate Formula:

\[ Q = A \times v \]

Volumetric Flow Rate (Q):

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1. What Is Volumetric Flow Rate?

Volumetric flow rate (Q) is the volume of fluid that passes through a given cross-sectional area per unit time. It is a fundamental parameter in fluid dynamics and is used extensively in engineering, HVAC systems, and industrial processes.

2. How Does The Calculator Work?

The calculator uses the volumetric flow rate formula:

\[ Q = A \times v \]

Where:

\( Q \) — Volumetric flow rate (m³/s or CFM)
\( A \) — Cross-sectional area (m²)
\( v \) — Velocity of the fluid (m/s)

Explanation: The formula calculates how much volume of fluid passes through a given area in a specific time period based on the fluid's velocity.

3. Importance Of Flow Rate Calculation

Details: Accurate flow rate calculation is essential for designing piping systems, ventilation systems, determining pump sizes, and ensuring proper fluid transport in various engineering applications.

4. Using The Calculator

Tips: Enter cross-sectional area in square meters, velocity in meters per second, and select your preferred output unit (m³/s or CFM). All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is the difference between volumetric and mass flow rate?
A: Volumetric flow rate measures volume per time, while mass flow rate measures mass per time. They are related by the fluid's density.

Q2: When should I use m³/s vs CFM?
A: Use m³/s for scientific calculations and metric systems. Use CFM (cubic feet per minute) for HVAC applications and imperial systems.

Q3: How do I measure cross-sectional area for irregular shapes?
A: For irregular ducts or pipes, measure the dimensions and calculate area using appropriate geometric formulas, or use specialized measuring tools.

Q4: Does fluid viscosity affect the calculation?
A: The basic Q = A × v formula assumes ideal conditions. For viscous fluids, additional factors like Reynolds number may need consideration.

Q5: Can this calculator be used for gases and liquids?
A: Yes, the formula applies to both gases and liquids, though compressibility effects for gases at high velocities may require additional calculations.