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Pitot Tube Calculator: Mastering Fluid Velocity Measurements

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In the realm of fluid dynamics, understanding the velocity of a fluid can be pivotal. One instrument frequently employed to measure fluid velocity is the Pitot tube. To assist you in comprehending this process and performing the necessary calculations, we present the Pitot Tube Calculator.

Grasping the Pitot Tube Concept

Named after its inventor, Henri Pitot, the Pitot tube measures fluid flow velocities using the principles of Bernoulli’s equation and the equation of continuity. It operates on the idea that a pressure difference is created when a fluid at a certain velocity comes to rest.

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The fluid velocity v can be calculated from the pressure difference Δp and fluid density ρ using the formula:

v = sqrt(2 * Δp / ρ)

Using the Pitot Tube Calculator

Our Pitot Tube Calculator simplifies this complex calculation. All you need to do is input the pressure difference (in Pascals) and fluid density (in kg/m³), and the calculator will return the estimated fluid velocity.

Example Calculation

Let’s take an example where we have a pressure difference of 500 Pa and the fluid’s density is 1000 kg/m³.

Using these inputs in our calculator:

v = sqrt(2 * 500 / 1000)

The calculator computes the fluid velocity to be approximately 1 m/s.


The Pitot Tube Calculator is an effective tool for understanding fluid dynamics and evaluating fluid velocity using the principles of a Pitot tube. However, bear in mind that real-world situations might cause the actual fluid velocity to vary due to other factors. Therefore, always consult with a professional or use accurate measuring tools for critical applications.

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