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Analiza wrażliwości rozwiązań CFD z użyciem modelu k-e na ,,stałe" modelu turbulencji

Błazik-Borowa E.

Systems : journal of transdisciplinary systems science

2006

Vol. 11, nr 1

145-152

The paper deals the application of the sensitivity analysis in CFD. This method is used to evaluate the influence of assumed ,,constants" of the standard k-e model on obtained steady flow parameters: pressure, velocity components, turbulence kinematics energy, dissipation of turbulence energy and dynamic turbulence viscosity. Differential coefficients fields of the sensitivity analysis show as the flow parameters change versus the ,,constants". These coefficients can be obtained from the analytical or semi-analytical direct differential methods. There are suitable formulae for described methods and exemplary results in the paper. The results of the sensitivity analysis can be useful to check the solution of CFD problems and they can be used to determine correct "constants" of the k-e model.