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Henry Weller authored
omegaWallFunction: Improved low-Reynolds number behavior and consistency with the epsilonWallFunction Changed default mode of operation to use standard y+ based switching rather than the previous ad hoc blending and added consistent handling of the near-wall generation term. This boundary condition provides a wall constraint on turbulnce specific dissipation, omega for both low and high Reynolds number turbulence models. The near-wall omega may be either blended between the viscous region and logarithmic region values using: \f[ \omega = sqrt(\omega_{vis}^2 + \omega_{log}^2) \f] where \vartable \omega_{vis} | omega in viscous region \omega_{log} | omega in logarithmic region \endvartable see eq.(15) of: \verbatim Menter, F., Esch, T. "Elements of Industrial Heat Transfer Prediction" 16th Brazilian Congress of Mechanical Engineering (COBEM), Nov. 2001 \endverbatim or switched between these values based on the laminar-to-turbulent y+ value derived from kappa and E. Recent tests have shown that the standard switching method provides more accurate results for 10 < y+ < 30 when used with high Reynolds number wall-functions and both methods provide accurate results when used with continuous wall-functions. Based on this the standard switching method is used by default.
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