Fluid dynamics

High school (ages 12+)
Science & Technology

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/fluid-dynamics

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the governing equations?The Navier-Stokes equations describe the motion of viscous fluid substances
2. What is the dimensionless quantities?Reynolds number characterizes flow regimes (laminar vs. turbulent)
3. Why do airplanes need fluid dynamics?Fluid dynamics helps explain lift and drag, the forces that allow an airplane to fly. By understanding these forces, designers can shape wings to make flight efficient.
4. What is turbulence and why is it important?Turbulence is chaotic, swirling flow that happens at high Reynolds numbers. It matters for weather, engines, and many natural systems.

Navier-Stokes Equations: Mathematical equations that describe the motion of viscous fluid substances.
Reynolds Number: A dimensionless quantity used to predict flow patterns in different fluid flow situations.
Coanda Effect: The tendency of a fluid jet to stay attached to a convex surface.