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In hydraulic engineering, air bubble entrainment is defined as the entrapment of air bubbles and pockets that are advected within the turbulent flow. [1] The entrainment of air packets can be localised or continuous along the air–water interface. Examples of localised aeration include air entrainment by plunging water jet and at hydraulic ...
The hydraulic jump is characterised by a highly turbulent flow. Macro-scale vortices develop in the jump roller and interact with the free surface leading to air bubble entrainment, splashes and droplets formation in the two-phase flow region. [23] [24] The air–water flow is associated with turbulence, which can also lead to sediment ...
Air entrainment in concrete is the intentional creation of tiny air bubbles in a batch by adding an air entraining agent during mixing. A form of surfactant (a surface-active substance that in the instance reduces the surface tension between water and solids) it allows bubbles of a desired size to form.
An airlift pump, powered by compressed air, raises fluid by entraining gas to reduce its density. 1. air supply 2. liquid supply 3. air inlet port 4. air supply line 5. air port 6. air outlet 7. fluid intake 8. riser tube 9. air liquid mixture 10. pump outlet L: liquid, usually wastewater LL: liquid level V: Vessel G: Gravel or solids.
Chanson authored several books among which: Hydraulic Design of Stepped Cascades, Channels, Weirs and Spillways (Pergamon, 1995), Air Bubble Entrainment in Free-Surface Turbulent Shear Flows (Academic Press, 1997), The Hydraulics of Open Channel Flow: An Introduction (Edward Arnold/Butterworth-Heinemann, 1999 & 2004), The Hydraulics of Stepped ...
Air or other gas dissolved in the fluid can come out of solution as small bubbles (entrained air). If these small bubbles have sufficient buoyancy, they can rise to the surface and together form foam. Mechanical factors that may generate entrapped air: Leaky seals on pumps; High pressure pumps
In engineering, entrainment is the entrapment of one substance by another substance. [1] For example: The entrapment of liquid droplets or solid particulates in a flowing gas, as with smoke. The entrapment of gas bubbles or solid particulates in a flowing liquid, as with aeration.
Mercedes-Benz has been experimenting with these capabilities for automobile suspension since the air suspension of the 1963 600 and the hydropneumatic (fluid and air) suspension of the 1974 6.9. ABC was only offered on rear-wheel drive models, as all-wheel drive 4MATIC models were available only with Airmatic semi-active air suspension , with ...