What is the meaning of entrained velocity?

What is the meaning of entrained velocity?

The entrainment velocity is expressed as the ratio of a relevant length scale to a time scale for all flows, a generalization of the original entrainment hypothesis of Morton, Taylor, & Turner.

What is entrainment in aerodynamics?

Entrainment is the transport of fluid across an interface between two bodies of fluid by a shear-induced turbulent flux. Entrainment is important in turbulent jets, plumes, and gravity currents and is a topic of current research.

What is flow entrainment?

Entrainment is defined in the simplest of terms as: to draw in and transport (something, such as solid particles or gas) by the flow of a fluid. EXAIR’s Intelligent Compressed Air® products use the principle of entrainment to give you more volume than the compressed air being introduced from your air compressor.

What causes entrainment?

Air entrainment occurs when the fluid contains air bubbles before it is pumped. Air entrainment can also be caused when liquid from an elevated point splashes into a wet well, causing turbulence and air bubbles to form. These air bubbles can get picked up and suctioned into the pump during operation.

What is entrainment effect?

Entrainment is a phenomenon of the atmosphere which occurs when a turbulent flow captures a non-turbulent flow. It is typically used to refer to the capture of a wind flow of high moisture content, or in the case of tropical cyclones, the capture of drier air.

What is the principle of entrainment?

The theory behind entrainment is that the less diversity there is in a system the more energy it will conduct. In plain English it’s easier and takes less energy for systems to work in cooperation than in opposition.

Why is entrainment important?

Entrainment helps organisms maintain an adaptive phase relationship with the environment as well as prevent drifting of a free running rhythm. This stable phase relationship achieved is thought to be the main function of entrainment.

What are examples of entrainment?

An oak leaf flitting through the air on a breezy fall day doesn’t move faster or slower than the wind pushing it along. It flies at the same speed as the wind gusts. This is a basic example of entrainment in nature.