What is entrainment 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. The vertical transport of water and energy in the atmosphere and ocean are determined by stratified entrainment.
What is entrainment in fluid?
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 entrain mean?
1 : to draw along with or after oneself. 2 : to draw in and transport (something, such as solid particles or gas) by the flow of a fluid. 3 : to incorporate (air bubbles) into concrete. 4 : to determine or modify the phase or period of circadian rhythms entrained by a light cycle.
What causes entrainment?
Improper addition of make-up fluid — Air may be entrained in the fluid if splashing occurs when fluid is added, or if the added fluid causes increased agitation in the reservoir. Contamination — One common source of increased air entrainment and foaming is fluid contamination by surface-active compounds.
What is entrainment physics?
Technically, entrainment in physics refers to the frequency locking of two oscillating bodies, i.e., bodies that can move in stable periodic or rhythmic cycles. They have different frequencies or movement periods when moving independently, but when interacting they assume a common period.
What does entrained mean in geography?
In physical geography, entrainment is the process by which surface sediment is incorporated into a fluid flow (such as air, water or even ice) as part of the operation of erosion.
What is entrainment theory?
Entrainment theory describes the process of interaction between independent rhythmical processes. This paper defines entrainment in this general sense, then briefly explores its significance for human behaviour, and for music- making in particular.
What is meant by entrainment?
What is the entrainment?
Entrainment (engineering), the entrapment of one substance by another substance. Entrainment (hydrodynamics), the movement of one fluid by another. Entrainment (meteorology), a phenomenon of the atmosphere. Entrainment (physical geography), the process by which surface sediment is incorporated into a fluid flow.
What is the process of entrainment?
How do you calculate entrainment range?
It is possible to entrain organisms to cycles with a T different to 24 hours. As a rule there is a range in which an organisms can be entrained. It is possible to entrain an organism to 20 or 22 hours (LD 10:10 T=20, or LD 11:11 T=22). Below T=16, organisms will free run.
How is the entrainment ratio of a jet related?
For a given area of diffuser opening A 0, the entrainment ratio is proportional to the distance x (for compact, radial, and conical diffuser jets) or proportional to the square root of the distance x (for linear jets). For the same type of jet, the entrainment ratio is less with a large K 1 than with a small K 1.
What should the entrainment ratio be in math?
As is shown in Fig. 5 the fitting result are very satisfactory for entrainment ratios between 0.2 and 1. This is because the major part of the data is found between entrainment ratios are clustered over a range of 0.2-0.8.
What do you mean by entrainment in hydrodynamics?
Entrainment is the transport of fluid across an interface between two bodies of fluid by a shear induced turbulent flux.
How is entrainment used in the transport of fluid?
See entrainment for other types. Entrainment is the transport of fluid across an interface between two bodies of fluid by a shear induced turbulent flux.