Encyclopedia > Turbulence

  Article Content

Turbulence

Turbulence or Turbulent flow is a flow regime characterized by low momentum diffusion, high momentum convection, and pressure and velocity variation with time. It is opposed by laminar flow. The (dimensionless) Reynolds number characterizes whether flow conditions lead to laminar or turbulent flow.

Examples of turbulence

  • A faucet[?] goes from
    • Off. No flow
    • Drip. Which would be modeled as a free boundary problem[?]
    • Laminar flow. A smooth and regular flow which looks somewhat solid because the flow maintains a fixed shape. In this regime, the water acts as a transparent lense.
    • Turbulent flow. At a certain point the water will start to break up. The water no long stays contained in a stable region is space. The stream ceases to be transparent.
  • A drop of cream in a cup of coffee.
  • Smoke from a smokey candle.

Anecdote: ,a famous scientist was asked what he would ask God, given the opportunity. His laconic reply was: "Why turbulence?"

See also

External Links



All Wikipedia text is available under the terms of the GNU Free Documentation License

 
  Search Encyclopedia

Search over one million articles, find something about almost anything!
 
 
  
  Featured Article
Digital Rights Management

... A wide variety of DRM systems have also been employed to restrict access to eBooks[?]. See the TCPA / Pallidium FAQ maintained by Professor Ross J Anderson on his Web ...

 
 
 
This page was created in 34.1 ms