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Transition in Faucet Flow

  • A faucet with running water
  • Procedure: Turn the faucet on. Slowly increase the flow rate.

    Explanation: At low exit speeds, the flow is laminar. As the speed increases, the flow becomes intermittently turbulent, as indicated by the appearance of "rough" patches. At a certain speed (Reynolds number), the flow becomes turbulent, and the flow appears "rough" at all times.

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