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fluid mechanics


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What is the Reynolds number?

The Reynolds number, represented by the formula Re=μρvD​, is used to predict the flow regime. If Re is less than 2300, the flow is considered laminar.

Differentiate laminar vs. turbulent flow.

Laminar flow is characterized by smooth layers, while turbulent flow involves chaotic eddies.

State Bernoulli's principle (qualitative)

 

Bernoulli's principle states that higher fluid velocity corresponds to lower pressure, which is a consequence of the conservation of energy along a streamline.

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What are two key fluid properties?

Density and viscosity are the core descriptors of fluid behavior.

What causes viscosity?

Viscosity is caused by internal friction resulting from molecular interactions that resist flow.

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