Explore the Bernoulli's Principle & Fluid Flow
Squeeze a pipe and watch the fluid speed up while the pressure gauge drops. Free, no signup, runs in your browser.
- Free to use
- No signup
- Nothing to install
- Runs in your browser
Illustration. Open the tool for the real thing.
See it in action
The Bernoulli's Principle & Fluid Flow with sample data entered and the result showing.
What is the Bernoulli's Principle & Fluid Flow?
Squeeze a pipe and watch the fluid speed up while the pressure gauge drops. It runs in your browser, so a change to a setting or a drag on an object shows up at once.
Carburettors, spray bottles, aeroplane wings, medical flow meters and chimney draughts all use Bernoulli's principle.
3 steps to your result
Open the tool and follow along. Nothing to install.
What you get
Continuity: A₁v₁ = A₂v₂, so a narrow pipe means faster flow.
Bernoulli: faster fluid has lower pressure.
Raising the outlet costs pressure (ρgh).
Squeeze the throat to 20% and read the pressure drop.
Change to a denser fluid.
Raise the outlet and see the pressure fall.
Used for
Pick one to see how it fits.
Physics learners
Physics students in middle school, high school and first-year university, teachers who want a quick demonstration for the projector, and anyone revising for exams.
Try it freeTeachers
For teachers: project the Bernoulli's Principle & Fluid Flow on the board, let students predict the result, then run it together and test this: Change to a denser fluid. For students: change one thing at a time and write down what changes.
Try it freeHow it compares
A plain look at this tool next to the usual alternative.
| This simulation | Textbook diagram | |
|---|---|---|
| Interactive | Drag, tap and change settings | Fixed picture |
| Install | Nothing to install | Not needed |
| Cost | Free to use | Depends on the book |
Questions people ask
What is the Venturi effect?
Fluid speeds up in a narrow section and its pressure falls.
Does Bernoulli's principle explain aeroplane lift?
It is part of it; faster air over the wing means lower pressure, together with the wing deflecting air downwards.
Is the Bernoulli's Principle & Fluid Flow free to use?
Yes. The Bernoulli's Principle & Fluid Flow is free, needs no signup or download and runs in your web browser. It is part of the Physics group of AZRS simulations.
Does the Bernoulli's Principle & Fluid Flow work on a phone or tablet?
Yes. The Bernoulli's Principle & Fluid Flow takes touch input as well as mouse input, so you can use its 4 adjustable settings with a finger. A larger screen makes the controls and graphs easier to read.
How do I use the Bernoulli's Principle & Fluid Flow?
1. In the Bernoulli's Principle & Fluid Flow, use the controls to change Flow rate, Throat width, Outlet height, Fluid. The simulation reacts instantly. 2. In the Bernoulli's Principle & Fluid Flow, pick an option such as Water 1000, Oil 800, Honey-like 1400 to switch modes or load an example. 3. Start with this experiment: Squeeze the throat to 20% and read the pressure drop. Drag any glowing handle, object or slider with your mouse or finger and the Bernoulli's Principle & Fluid Flow responds in real time. 4. Change one setting at a time and watch which readout moves, then compare it with this idea: Continuity: A₁v₁ = A₂v₂, so a narrow pipe means faster flow.
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Try the Bernoulli's Principle & Fluid Flow now
Squeeze a pipe and watch the fluid speed up while the pressure gauge drops. Free to use.
Try it free