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Semiempirical methods for computing turbulent flows (1986)

Ginzburg, I. P. ; Belov, I. A.

In: CASI

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Publication Date: 2019-08-28

Description: Two semiempirical theories which provide a basis for determining the turbulent friction and heat exchange near a wall are presented: (1) the Prandtl-Karman theory, and (2) the theory utilizing an equation for the energy of turbulent pulsations. A comparison is made between exact numerical methods and approximate integral methods for computing the turbulent boundary layers in the presence of pressure, blowing, or suction gradients. Using the turbulent flow around a plate as an example, it is shown that, when computing turbulent flows with external turbulence, it is preferable to construct a turbulence model based on the equation for energy of turbulent pulsations.

Keywords: FLUID MECHANICS AND HEAT TRANSFER

Type: NASA-TM-77996 , NAS 1.15:77996

Format: application/pdf

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