Theoretical Approach for the Fast Estimation of the Turbulent Kinematic Viscosity for Internal Flows-Reference-Cited by-同舟云学术

Theoretical Approach for the Fast Estimation of the Turbulent Kinematic Viscosity for Internal Flows

Published:2022-05-26 Issue:3 Volume:8 Page:
ISSN:2332-8983
Container-title:Journal of Nuclear Engineering and Radiation Science
language:en
Short-container-title:

Author:

Rodriguez Sal¹,Fathi Nima²³,Pourghasemi Mahyar⁴

Affiliation:

1. Sandia National Laboratories , Albuquerque, NM 87123

2. Texas A&M University , Galveston, TX 77553 ; , Albuquerque, NM 87131

3. University of New Mexico , Galveston, TX 77553 ; , Albuquerque, NM 87131

4. University of New Mexico , Albuquerque, NM 87131

Abstract

Abstract An analytical expression for turbulent kinematic viscosity (νt), based solely on the hydraulic Reynolds number (Re), was derived and evaluated. The analytical expression is valid for the fast estimation of νt for internal, isotropic, fully developed flows. The expression was compared with experimental and simulation data for air, water, and liquid sodium, and was shown to provide reasonable values for 2100 ≤ Re ≤ 3.6 × 106 and Prandtl number (Pr) range of 0.0107 ≤ Pr ≤ 5.65. In addition, new expressions suitable for the central portion of internal flows, away from the wall, were derived for the turbulent Reynolds number (ReT), showing its relationship to Re, as well as to the ratio of νt and the molecular kinematic viscosity (ν).

Publisher

ASME International

Subject

Nuclear Energy and Engineering,Radiation

Link

https://asmedigitalcollection.asme.org/nuclearengineering/article-pdf/8/3/034502/6883577/ners_008_03_034502.pdf

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