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  2. Kolmogorov microscales - Wikipedia

    en.wikipedia.org/wiki/Kolmogorov_microscales

    where ε is the average rate of dissipation of turbulence kinetic energy per unit mass, and; ν is the kinematic viscosity of the fluid.; Typical values of the Kolmogorov length scale, for atmospheric motion in which the large eddies have length scales on the order of kilometers, range from 0.1 to 10 millimeters; for smaller flows such as in laboratory systems, η may be much smaller.

  3. Piping and plumbing fitting - Wikipedia

    en.wikipedia.org/wiki/Piping_and_plumbing_fitting

    A reducer reduces the pipe size from a larger to a smaller bore (inner diameter). Alternatively, reducer may refer to any fitting which causes a change in pipe diameter. [15] This change may be intended to meet hydraulic flow requirements of the system or adapt to existing piping of a different size. The reduction length is usually equal to the ...

  4. List of dimensionless quantities - Wikipedia

    en.wikipedia.org/wiki/List_of_dimensionless...

    physics, engineering (Damping ratio of oscillator or resonator; energy stored versus energy lost) Relative density: RD = hydrometers, material comparisons (ratio of density of a material to a reference material—usually water)

  5. Dimensionless numbers in fluid mechanics - Wikipedia

    en.wikipedia.org/wiki/Dimensionless_numbers_in...

    Dimensionless numbers (or characteristic numbers) have an important role in analyzing the behavior of fluids and their flow as well as in other transport phenomena. [1] They include the Reynolds and the Mach numbers, which describe as ratios the relative magnitude of fluid and physical system characteristics, such as density, viscosity, speed of sound, and flow speed.

  6. NFL firing rumors: Latest hot seat updates, news entering ...

    www.aol.com/nfl-firing-rumors-latest-hot...

    NFL head coaches are hired to be fired. Very few get a storybook ending. Here's the latest on coach hot seats entering Black Monday.

  7. The Kate Spade Outlet sitewide sale has great gifting ideas ...

    www.aol.com/lifestyle/the-kate-spade-outlet...

    It's the perfect size bag for when I need only the keys, wallet and phone essentials and don't fee like lugging a large tote. It keeps me hands free and it's classic shape won't go out of style ...

  8. Eccentric reducer - Wikipedia

    en.wikipedia.org/wiki/Eccentric_reducer

    Eccentric reducers are used at the suction side of pumps to ensure air does not accumulate in the pipe. The gradual accumulation of air in a concentric reducer could result in a large bubble that could eventually cause the pump to stall or cause cavitation when drawn into the pump. Eccentric reducers exhibit a unique design with one side having ...

  9. January's Full Moon Will Have Everyone in Their Feelings ...

    www.aol.com/lifestyle/januarys-full-moon...

    January's full moon may have you howling! Nicknamed the Wolf Moon, this month's lunation will reach peak fullness at 2:27 p.m. PT on Jan. 13, marking the first full moon of 2025 and rising two ...