A new improved one-equation turbulence model based on k-kl closure

Shuai Shuai, Ramesh K. Agarwal

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


In a previous paper, AIAA 2019-1879, a new one-equation eddy-viscosity model was derived from the two-equation k-kL model. In this paper, improvements to the model are described by optimizing the model constants. The new improved model is used to simulate several benchmark canonical wall-bounded turbulent flows with small regions of separation. The open-source software OpenFOAM is used for the flowfield calculation. Grid independence of solution study is conducted on several benchmark cases and the influence of grid on the solution accuracy is assessed. It is shown that the new improved one equation k-kL model is more accurate compared to the one equation Spalart-Allmaras model and two-equation k-kL model for several benchmark cases.

Original languageEnglish
Title of host publicationAIAA Scitech 2020 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105951
StatePublished - 2020
EventAIAA Scitech Forum, 2020 - Orlando, United States
Duration: Jan 6 2020Jan 10 2020

Publication series

NameAIAA Scitech 2020 Forum


ConferenceAIAA Scitech Forum, 2020
Country/TerritoryUnited States


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