The turbulence modelling of a pulsed impinging jet using LES and a divergence free mass flux corrected turbulent inlet
Haines, Matthew and Taylor, Ian (2019) The turbulence modelling of a pulsed impinging jet using LES and a divergence free mass flux corrected turbulent inlet. Journal of Wind Engineering and Industrial Aerodynamics, 188. pp. 338-364. ISSN 0167-6105 (https://doi.org/10.1016/j.jweia.2019.03.009)
Preview |
Text.
Filename: Haines_Taylor_JWEIA_2019_The_turbulence_modelling_of_a_pulsed_impinging_jet_using_LES.pdf
Accepted Author Manuscript License: Download (7MB)| Preview |
Abstract
This paper examines the best turbulence model to use when using computational fluid dynamics to simulate an impinging jet type flow. The IDDES, k-ω SST SAS, Smagorinsky and dynamic Smagorinsky models were used and compared to data collected from a laboratory impinging jet, developed to simulate thunderstorm downburst flow fields. From this it was found the dynamic Smagorinsky model performed best, especially at capturing the velocities and pressures in the near inlet region. A mesh dependency study was then performed for the dynamic Smagorinsky turbulence model. A small mesh dependency was demonstrated for the mesh densities studied but had issues in capturing the velocity height profile correctly in the near wall region. Despite this issue the model still closely matched the laboratory pressures around a 60 mm cube and demonstrated the suitability of this modelling approach for investigating thunderstorm downbursts.
-
-
Item type: Article ID code: 67515 Dates: DateEvent31 May 2019Published18 March 2019Published Online6 March 2019AcceptedSubjects: Technology > Mechanical engineering and machinery Department: UNSPECIFIED Depositing user: Pure Administrator Date deposited: 08 Apr 2019 11:17 Last modified: 01 Aug 2024 01:21 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/67515