The influence of boundary condition functions on the quality of the solution and its sensitivity to coefficients of k-? turbulence models

• Autorzy: Błazik-Borowa E.
• Języki publikacji: EN

Abstrakty

EN

The paper is devoted to the problem of boundary conditions influence on the quality of the solution obtained with use of k-? turbulence models. There are calculation results for different boundary conditions and two methods: standard k-? and RNG k-? 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.

Słowa kluczowe

EN

CFD; k-? turbulence models; sensitivity analysis; square cylinder

• Wydawca: Wydawnictwo Politechniki Lubelskiej
• Czasopismo: Budownictwo i Architektura
• Rocznik: 2011
• Tom: vol. 8, nr 1
• Strony: 15--26
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Błazik-Borowa E.

• Department of Structural Mechanics, Lublin University of Technology,

Bibliografia

• [1] Błazik-Borowa E., The problems of the application of the k‑ε turbulence model to determination of the properties of flow around buildings, The Publisher of Lublin University of Technology, Lublin, 2008.
• [2] 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.
• [3] 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-ε turbulence method with using sensitivity analysis of flow properties to model coefficients, Novapublisher, New York, 2010.
• [4] Hrenya, C.M., Bolio, E.J., Chakrabarti, D., Sinclair, J.L., Comparison of low Reynolds number k-ε turbulence models in predicting fully developed pipe flow, Chemical Engineering Science 50, 12 (1995) 1923-1941.
• [5] Shih, T.H., Liou, W.W., Shabbir, A., Yang, Z., Zhu, J., A new k-ε eddy-viscosity model for high Reynolds number turbulent flows, Computers Fluid 24, 3 (1995) 227-238.
• [6] Shimada, K., Ishihara, T., Application of a modified k-ε model to the prediction of aerodynamic characteristic of rectangular cross-section cylinders, Journal of Fluids and Structures 16(4) (2002) 465-485.