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  2. Reynolds 531 - Wikipedia

    en.wikipedia.org/wiki/Reynolds_531

    Reynolds 531 (pronounced 'five-three-one') is a brand name, registered to Reynolds Technology of Birmingham in the United Kingdom, for a manganese–molybdenum, medium-carbon steel tubing that was used in many quality applications, including race car chassis, aircraft components and, most famously, bicycle frame tubing. It is one of a number of ...

  3. Reynolds Technology - Wikipedia

    en.wikipedia.org/wiki/Reynolds_Technology

    The Reynolds Tube Company was founded in 1898 by John Reynolds in Birmingham, England, [1] but traces its origins back to 1841 when John Reynolds set up a company manufacturing nails. [2] In 1897, the company patented the process for making butted tubes, [ 3 ] which are thicker at the ends than in the middle, this allowed frame builders to ...

  4. Turbulence modeling - Wikipedia

    en.wikipedia.org/wiki/Turbulence_modeling

    The Reynolds stress equation model (RSM), also referred to as second moment closure model, [12] is the most complete classical turbulence modelling approach. Popular eddy-viscosity based models like the k –ε ( k –epsilon) model and the k –ω ( k –omega) models have significant shortcomings in complex engineering flows.

  5. Darcy friction factor formulae - Wikipedia

    en.wikipedia.org/wiki/Darcy_friction_factor_formulae

    Churchill equation [24] (1977) is the only equation that can be evaluated for very slow flow (Reynolds number < 1), but the Cheng (2008), [25] and Bellos et al. (2018) [8] equations also return an approximately correct value for friction factor in the laminar flow region (Reynolds number < 2300). All of the others are for transitional and ...

  6. List of bitcoin forks - Wikipedia

    en.wikipedia.org/wiki/List_of_bitcoin_forks

    Bitcoin forks are defined variantly as changes in the protocol of the bitcoin network or as the situations that occur "when two or more blocks have the same block height". [1] A fork influences the validity of the rules. Forks are typically conducted in order to add new features to a blockchain, to reverse the effects of hacking or catastrophic ...

  7. Dynamic similarity (Reynolds and Womersley numbers)

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

    The Reynolds and Womersley Numbers are also used to calculate the thicknesses of the boundary layers that can form from the fluid flow’s viscous effects. The Reynolds number is used to calculate the convective inertial boundary layer thickness that can form, and the Womersley number is used to calculate the transient inertial boundary thickness that can form.

  8. Boids - Wikipedia

    en.wikipedia.org/wiki/Boids

    Boids is an artificial life program, developed by Craig Reynolds in 1986, which simulates the flocking behaviour of birds, and related group motion. His paper on this topic was published in 1987 in the proceedings of the ACM SIGGRAPH conference. [ 1 ]

  9. Dimensionless physical constant - Wikipedia

    en.wikipedia.org/wiki/Dimensionless_physical...

    In aerodynamics for example, if one considers one particular airfoil, the Reynolds number value of the laminar–turbulent transition is one relevant dimensionless number of the problem. However, it is strictly related to the particular problem: for example, it is related to the airfoil being considered and also to the type of fluid in which it ...