Read Exploration of the Cusp Behavior of the RNG Eddy Viscosity Near the Cutoff Wavenumber - PRINCETON UNIV NJ; Smith, L. M.; Waleffe, F.; Carati, D. | PDF Online

Download Exploration of the Cusp Behavior of the RNG Eddy Viscosity Near the Cutoff Wavenumber - PRINCETON UNIV NJ; Smith, L. M.; Waleffe, F.; Carati, D. | PDF

1991-12-31 Genre/Form: Text Material Type: Internet resource Document Type: Internet Resource, Archival Material All Authors / Contributors: PRINCETON UNIV NJ; Smith, L. M.; Waleffe, F.; Carati, D. OCLC Number: 831959017 Language Note: English Notes: text/html Abstract: The renormalization group (RNG) theory has been used to derive the cutoff-dependent subgrid eddy viscosity (Yakhot and Orszag, 1986). Here, the possibility of deriving the cusp for wavenumbers near the cutoff is investigated. It is explained why the cusp does not appear at lowest order in the RNG analysis of the Navier Stokes equations, and why previously proposed derivations of the cusp using RNG lead to mathematically or physically unreasonable results. However, the cusp may be derived from the lowest-order RNG equation for the energy spectrum using the RNG eddy damping. This energy equation is equivalent to the EDQNM model energy equation with a theoretically derived Kolmogorov constant. Renormalization group theory, Eddy viscosity, Vorticity equation.

Title : Exploration of the Cusp Behavior of the RNG Eddy Viscosity Near the Cutoff Wavenumber
Author : PRINCETON UNIV NJ; Smith, L. M.; Waleffe, F.; Carati, D.
Language : en
Rating :
4.90 out of 5 stars
Type : PDF, ePub, Kindle
Uploaded : Apr 12, 2021

Post Your Comments: