Using numerical dissipation rate and viscosity to assess turbulence-related data accuracy - Part 2: Results

This is the second part of a two-part paper focusing on the assessment of accuracy of turbulence-related data from CFD simulations using effective numerical dissipation rate and effective numerical viscosity. Experimental setup has been discussed in the first part of this series. Here, the relevant solution data obtained via CFD are compared to the values from laser Doppler anemometry measurements, and it is studied whether the accuracy of such data can be assessed using the two mentioned quantities. The overall outcome is that although judging mesh quality generally is possible, alone the two quantities are insufficient to draw conclusions regarding the actual solution data.

Keywords

Computational fluid dynamics, Numerical dissipation, Numerical viscosity, Reynolds stress tensor

Citation

CHEMIE INGENIEUR TECHNIK. 2023, vol. 95, issue 9, p. 1448-1456.
https://onlinelibrary.wiley.com/doi/10.1002/cite.202200045

Document type

Peer-reviewed

Document version

Published version

Language of document

en

Document licence

Creative Commons Attribution-NonCommercial 4.0 International
http://creativecommons.org/licenses/by-nc/4.0/