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  2. Reynolds equation - Wikipedia

    en.wikipedia.org/wiki/Reynolds_Equation

    It was first derived by Osborne Reynolds in 1886. [1] The classical Reynolds Equation can be used to describe the pressure distribution in nearly any type of fluid film bearing; a bearing type in which the bounding bodies are fully separated by a thin layer of liquid or gas.

  3. Fluid bearing - Wikipedia

    en.wikipedia.org/wiki/Fluid_bearing

    Conceptually the bearings can be thought of as two major geometric classes: bearing-journal (anti-friction), and plane-slider (friction). The Reynolds equations can be used to derive the governing principles for the fluids. Note that when gases are used, their derivation is much more involved.

  4. Dynamic similarity (Reynolds and Womersley numbers)

    en.wikipedia.org/wiki/Dynamic_similarity...

    From the equation it is shown that for a flow with a large Reynolds Number there will be a correspondingly small convective boundary layer compared to the vessel’s characteristic length. [5] By knowing the Reynolds and Womersley numbers for a given flow it is possible to calculate both the transient and the convective boundary layer ...

  5. Plain bearing - Wikipedia

    en.wikipedia.org/wiki/Plain_bearing

    Journal (friction, radial or rotary) bearing: This is the most common type of plain bearing; it is simply a shaft rotating in a hole. [3] In locomotive and railroad car applications a journal bearing specifically referred to the plain bearing once used at the ends of the axles of railroad wheel sets, enclosed by journal boxes .

  6. Reynolds number - Wikipedia

    en.wikipedia.org/wiki/Reynolds_number

    The size of the largest scales of fluid motion (sometimes called eddies) are set by the overall geometry of the flow. For instance, in an industrial smoke stack, the largest scales of fluid motion are as big as the diameter of the stack itself. The size of the smallest scales is set by the Reynolds number.

  7. 30 Christmas Traditions From Around the World - AOL

    www.aol.com/30-christmas-traditions-around-world...

    According to a 2009 paper in the academic journal Ethnology, “Christmas is also the time when the Christian Chagga perform sacrificial rituals (mitambiko) for the ancestors.” Ukraine

  8. Contact mechanics - Wikipedia

    en.wikipedia.org/wiki/Contact_mechanics

    It gives the contact stress as a function of the normal contact force, the radii of curvature of both bodies and the modulus of elasticity of both bodies. Hertzian contact stress forms the foundation for the equations for load bearing capabilities and fatigue life in bearings, gears, and any other bodies where two surfaces are in contact.

  9. Longtime Providence Journal columnist Bill Reynolds dies at ...

    www.aol.com/lifestyle/long-time-providence...

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