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What distinguishes turbulent flow from laminar flow?

Turbulent flow has mixing, eddies, and swirls.

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  1. Layers mix through eddies ✔
  2. Layers remain parallel
  3. Fluid has no viscosity

Why: Laminar flow follows smooth layers with little cross-mixing. Turbulent flow contains irregular motion, eddies, and mixing, which usually increases resistance and energy loss.

Huh, didn't know that: A sharp corner or obstruction can trigger turbulence even without changing the average flow direction.

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Laminar flow is orderly because every layer knows its lane.
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References

Answer: Layers mix through eddies. Laminar flow follows smooth layers with little cross-mixing. Turbulent flow contains irregular motion, eddies, and mixing, which usually increases resistance and energy loss.

  1. OpenStax University Physics Volume 1, Viscosity and Turbulence openstax.org/books/university-physics-volume-1/pages/14-7-viscosity-and-turbulence
    When flow is laminar, layers flow without mixing. When flow is turbulent, the layers mix
    Checked 2026-10-10.

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