Ad
related to: free flow water
Search results
Results from the WOW.Com Content Network
Freeflow (also free flow and free-flow) in underwater diving apparatus is a continuous flow of gas from a storage or supply unit. In scuba diving it is usually undesirable and considered a malfunction, while in surface supplied diving it may be a malfunction or a user selected option in demand systems, or the standard mode of operation in freeflow systems.
In hydrodynamics, the free surface is defined mathematically by the free-surface condition, [11] that is, the material derivative on the pressure is zero: = In fluid dynamics , a free-surface vortex , also known as a potential vortex or whirlpool, forms in an irrotational flow, [ 12 ] for example when a bathtub is drained.
For free flow, the equation to determine the flow rate is simply Q = CH a n where: Q is flowing rate (ft 3 /s) C is the free-flow coefficient for the flume (see Table 1 below) H a is the head at the primary point of measurement (ft) (See Figure 1 above) n varies with flume size (see Table 1 below) Parshall flume discharge table for free flow ...
The water in this stream forms varying currents as it makes its way downhill. In hydrology, a current in a water body is the flow of water in any one particular direction. The current varies spatially as well as temporally, dependent upon the flow volume of water, stream gradient, and channel geometry.
Where the ambient water temperature is less than 5 °C any water in contact with the regulator may freeze. If this ice jams the diaphragm or piston spring, preventing the valve closing, a free-flow may ensue that can empty a full cylinder within a minute or two, and the free-flow causes further cooling in a positive feedback loop. [44]
In physics, a free surface flow is the surface of a fluid flowing that is subjected to both zero perpendicular normal stress and parallel shear stress.This can be the boundary between two homogeneous fluids, like water in an open container and the air in the Earth's atmosphere that form a boundary at the open face of the container.
Under free-flow conditions the depth of water at specified location upstream of the flume throat can be converted to a rate of flow. The free-flow discharge can be summarized as [3] = = Where Q is flow rate "C" is the free-flow coefficient; K is the free-flow length coefficient for the flume; H is the head at the primary point of measurement; n ...
A Wind generated current is a flow in a body of water that is generated by wind friction on its surface. Wind can generate surface currents on water bodies of any size. The depth and strength of the current depend on the wind strength and duration, and on friction and viscosity losses, [1] but are limited to about 400 m depth by the mechanism, and to lesser depths where the water is shallower. [2]
Ad
related to: free flow water