Abstract
The work shows that the ratio of turbulent viscosity to kinematic viscosity and the Reynolds number calculated from the dynamic velocity weakly depends on the Reynolds number, but this dependence is not monotonic. Data from direct numerical modeling of turbulent flow in pipes known from the literature show that if, instead of the Reynolds number calculated from the dynamic velocity, we use the Reynolds number calculated from the average velocity over the cross section, the indicated dependence becomes monotonic and at large values of the Reynolds number the ratio of turbulent viscosity to kinematic viscosity and Reynolds number tends to a finite limit. Formulas are obtained for calculating the maximum value of turbulent viscosity and the cross-sectional average value depending on the Reynolds number.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Bulletin of the Saint Petersburg State Institute of Technology (Technical University)
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
