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  2. Air bubble entrainment (hydraulics) - Wikipedia

    en.wikipedia.org/wiki/Air_bubble_entrainment...

    Interfacial aeration is defined as the air entrainment process along an air–water interface, usually parallel to the flow direction. In hydraulic structures, free-surface aeration is commonly observed: i.e., the white waters. The air bubble entrainment may be localised or continuous along an interface (water jets, spillway chutes). Despite ...

  3. Hydraulic jump - Wikipedia

    en.wikipedia.org/wiki/Hydraulic_jump

    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 transport. The turbulence may be strongly affected by the bubble dynamics.

  4. Plume (fluid dynamics) - Wikipedia

    en.wikipedia.org/wiki/Plume_(fluid_dynamics)

    Typical values for the entrainment coefficient are of about 0.08 for vertical jets and 0.12 for vertical, buoyant plumes while for bent-over plumes, the entrainment coefficient is about 0.6. Conservation equations for mass (including entrainment), and momentum and buoyancy fluxes are sufficient for a complete description of the flow in many cases.

  5. Fluidized bed reactor - Wikipedia

    en.wikipedia.org/wiki/Fluidized_bed_reactor

    A fluidized bed reactor (FBR) is a type of reactor device that can be used to carry out a variety of multiphase chemical reactions. In this type of reactor, a fluid (gas or liquid) is passed through a solid granular material (usually a catalyst) at high enough speeds to suspend the solid and cause it to behave as though it were a fluid.

  6. Air entrainment - Wikipedia

    en.wikipedia.org/wiki/Air_entrainment

    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.

  7. The Most Popular Grocery Store in America Is Not What You'd Think

    www.aol.com/finance/most-popular-grocery-store...

    3. Whole Foods Market. Popularity: 61% Fame: 95%. Whole Foods made organic and free-range mainstream, so it’s no surprise it ranks as the third most popular grocery chain in the country.For ...

  8. High school students rescue man who fell on train tracks

    www.aol.com/high-school-students-rescue-man...

    CBS News contributor David Begnaud shows how three teens at a high school in Iowa jumped into action to help save a man they saw struggling after he fell on train tracks.

  9. Weber number - Wikipedia

    en.wikipedia.org/wiki/Weber_number

    The Weber number is the dimensionless parameter that determines the onset of this phenomenon called the entrainment limit (Weber number greater than or equal to 1). In this case the Weber number is defined as the ratio of the momentum in the vapor layer divided by the surface tension force restraining the liquid, where the characteristic length ...

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