The influence of boundary condition functions on the quality of the solution and its sensitivity to coefficients of k-ε turbulence models
Ewa Błazik-Borowa
Department of Structural Mechanics; Faculty of Civil Engineering and Architecture; Lublin University of Technology (Poland)
https://orcid.org/0000-0001-8200-3827
Abstract
The paper is devoted to the problem of boundary conditions influence on the quality of the solution obtained with use of k-ε turbulence models. There are calculation results for different boundary conditions and two methods: standard k-ε and RNG k-ε in the paper. The flow parameters obtained from the calculation are compared with our own measurement results. Moreover, the influence of input data on the inflow edge on sensitivity coefficients is shown and analysed in the paper. The research is performed for components of velocity and turbulence kinetic energy.
Keywords:
CFD, the k-ε turbulence models, , sensitivity analysis, square cylinderReferences
Błazik-Borowa E., The problems of the application of the k-? turbulence model to determination of the properties of flow around buildings, The Publisher of Lublin University of Technology, Lublin, 2008.
Google Scholar
Błazik-Borowa, E., Bęc, J., Nowicki, T., Lipecki, T., Szulej, J., Measurements of 2-D flow parameters around rectangular prisms arranged at the ground, Budownictwo i Architektura, 3 (2008) 33-51.
DOI: https://doi.org/10.35784/bud-arch.2321
Google Scholar
Błazik-Borowa, E., Editors Lang, P.R. and Lombargo F.S., Atmospheric Turbulence, Meteorological Modeling and Aerodynamics; the chapter: The research of the solution quality for the k-? turbulence method with using sensitivity analysis of flow properties to model coefficients, Novapublisher, New York, 2010.
Google Scholar
Hrenya, C.M., Bolio, E.J., Chakrabarti, D., Sinclair, J.L., Comparison of low Reynolds number k-? turbulence models in predicting fully developed pipe flow, Chemical Engineering Science 50, 12 (1995) 1923-1941.
DOI: https://doi.org/10.1016/0009-2509(95)00035-4
Google Scholar
Shih, T.H., Liou, W.W., Shabbir, A., Yang, Z., Zhu, J., A new k-? eddy-viscosity model for high Reynolds number turbulent flows, Computers Fluid 24, 3 (1995) 227-238.
DOI: https://doi.org/10.1016/0045-7930(94)00032-T
Google Scholar
Shimada, K., Ishihara, T., Application of a modified k-? model to the prediction of aerodynamic characteristic of rectangular cross-section cylinders, Journal of Fluids and Structures 16(4) (2002) 465-485.
DOI: https://doi.org/10.1006/jfls.2001.0433
Google Scholar
Authors
Ewa Błazik-BorowaDepartment of Structural Mechanics; Faculty of Civil Engineering and Architecture; Lublin University of Technology Poland
https://orcid.org/0000-0001-8200-3827
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