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  2. Momentum transfer - Wikipedia

    en.wikipedia.org/wiki/Momentum_transfer

    The momentum transfer plays an important role in the evaluation of neutron, X-ray, and electron diffraction for the investigation of condensed matter. Laue-Bragg diffraction occurs on the atomic crystal lattice, conserves the wave energy and thus is called elastic scattering, where the wave numbers final and incident particles, and , respectively, are equal and just the direction changes by a ...

  3. Transport phenomena - Wikipedia

    en.wikipedia.org/wiki/Transport_phenomena

    Some of the most common examples of transport analysis in engineering are seen in the fields of process, chemical, biological, [1] and mechanical engineering, but the subject is a fundamental component of the curriculum in all disciplines involved in any way with fluid mechanics, heat transfer, and mass transfer.

  4. Chilton and Colburn J-factor analogy - Wikipedia

    en.wikipedia.org/wiki/Chilton_and_Colburn_J...

    The basic mechanisms and mathematics of heat, mass, and momentum transport are essentially the same. Among many analogies (like Reynolds analogy , Prandtl–Taylor analogy) developed to directly relate heat transfer coefficients, mass transfer coefficients and friction factors, Chilton and Colburn J-factor analogy proved to be the most accurate.

  5. Continuity equation - Wikipedia

    en.wikipedia.org/wiki/Continuity_equation

    Continuity equations more generally can include "source" and "sink" terms, which allow them to describe quantities that are often but not always conserved, such as the density of a molecular species which can be created or destroyed by chemical reactions. In an everyday example, there is a continuity equation for the number of people alive; it ...

  6. Transport Phenomena (book) - Wikipedia

    en.wikipedia.org/wiki/Transport_Phenomena_(book)

    Transport Phenomena is the first textbook about transport phenomena.It is specifically designed for chemical engineering students. The first edition was published in 1960, two years after having been preliminarily published under the title Notes on Transport Phenomena based on mimeographed notes prepared for a chemical engineering course taught at the University of Wisconsin–Madison during ...

  7. Momentum-transfer cross section - Wikipedia

    en.wikipedia.org/wiki/Momentum-transfer_cross...

    In physics, and especially scattering theory, the momentum-transfer cross section (sometimes known as the momentum-transport cross section [1]) is an effective scattering cross section useful for describing the average momentum transferred from a particle when it collides with a target. Essentially, it contains all the information about a ...

  8. Electrical mobility - Wikipedia

    en.wikipedia.org/wiki/Electrical_mobility

    For example, the mobility of the sodium ion (Na +) in water at 25 °C is 5.19 × 10 −8 m 2 /(V·s). [1] This means that a sodium ion in an electric field of 1 V/m would have an average drift velocity of 5.19 × 10 −8 m/s. Such values can be obtained from measurements of ionic conductivity in solution.

  9. Boltzmann equation - Wikipedia

    en.wikipedia.org/wiki/Boltzmann_equation

    The equation is a nonlinear integro-differential equation, and the unknown function in the equation is a probability density function in six-dimensional space of a particle position and momentum. The problem of existence and uniqueness of solutions is still not fully resolved, but some recent results are quite promising. [3] [4]