Mechanical Properties of Fluids
Class 11 · Mechanical Properties of Fluids

Streamline vs Turbulent (Re)

Re = ρvD/η — sweep velocity to cross from laminar to turbulent flow.

Run simulation

Key Notes

01

Reynolds number Re = ρvD/η classifies flow regime.

02

Re < 2000 → laminar (smooth streamlines). Re > 4000 → turbulent (chaotic eddies).

03

Between 2000–4000 → transitional regime, sensitive to disturbances.

Formulas

Reynolds number

Dimensionless number.

Important Points

Higher viscosity (η) → lower Re → more laminar.

Larger pipe diameter or faster flow → higher Re → more turbulent.

Streamline vs Turbulent (Re) notes from sciphylab (also known as SciPhy, SciPhy Lab, SciPhy Labs, Physics Lab). Class 11 physics revision for JEE Mains, JEE Advanced, NEET UG, AP Physics 1/2/C, SAT, and CUET-UG.