Fluid dynamics

Both liquids and gases are fluids because they can flow and deform continuously. This topic is part of Physics within Science & Nature. This page currently draws on 4 supporting questions, with answers and bonus facts available below.

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Fluid dynamics trivia questions

Fluid dynamics studies the motion of what?

Answer: Liquids and gases

Bonus fact: Both liquids and gases are fluids because they can flow and deform continuously.

What dimensionless number is commonly used to compare inertial and viscous effects in a flowing fluid?

Answer: Reynolds number

Bonus fact: Reynolds number helps predict whether flow is more likely to be smooth and laminar or chaotic and turbulent.

Which equations are fundamental to describing the motion of viscous fluids?

Answer: Navier-Stokes equations

Bonus fact: The Navier-Stokes equations are central to engineering, weather modeling, aerodynamics, and many other fluid-flow problems.

Hydrodynamics is the study of the motion of what?

Answer: Liquids

Bonus fact: Hydrodynamics is the liquid-focused branch of fluid dynamics.

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