Fluid Dynamics

, Volume 22, Issue 5, pp 695–701 | Cite as

The damping factor in the theory of the Prandtl mixing length

  • V. V. Zyabrikov
  • L. G. Loitsyanskii
Article
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Abstract

An introduction to the classical Prandtl equation of the additional factor which takes account of the effect of molecular velocity -“the damping factor” — enables us to describe the process of flow in the transition sector of the boundary region of a turbulent boundary layer by relying on the model of interaction of molecular and molar momentum exchange between the layers of averaged turbulent motion. The application of not only the universal forms of physical variables but also special conservative variables, the connection between which does not depend on the conditions on the outer edge of the boundary layer, widens the opportunities for applying the method to the boundary region of the gradient boundary layer. The comparatively laborious nature of the calculation from the conservative equations brought about the introduction of much simpler but at the same time fairly accurate approximation equations.

Keywords

Boundary Layer Accurate Approximation Conservative Equation Boundary Region Turbulent Boundary Layer 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© Plenum Publishing Corporation 1988

Authors and Affiliations

  • V. V. Zyabrikov
    • 1
  • L. G. Loitsyanskii
    • 1
  1. 1.Leningrad

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