Turbulence model validation for calculation of flow parameters and aerodynamic characteristics of a passenger plane

Аuthors

Kostyukov V. M.^*, Tran Q. D.^**

Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia

*e-mail: kost_slv@mail.ru
**e-mail: tranduc@mail.ru

Abstract

The purpose of this work is to validate model of airflow over passenger aircraft aerodynamic using the ANSYS FLUENT software package (license number: 00632255).

The paper examines two models of a flown around object: LL 6945 fuselage model [1] and TU-154B passenger aircraft [2]. All investigations were performed using the following parameters: angles of attack, α = 0...20°, Mach numbers: 0,2 < M < 0,8, Reynolds number: 7·10⁶ < Re < 28·10⁷. The flow in the vicinity of the examined models, LL 6945 fuselage and TU-154B was assumed to be turbulent.

Calculations of the flow parameters and aerodynamic characteristics were made using the following models of turbulence: Spalart-Allmaras model, «SST k- ω», «k- e ».

Calculation results obtained with ANSYS FLUENT were compared with experimental data.

It was found that calculation results using the «SST k- ω » model match in the best way with experimental data and describe the variations of the aerodynamic coefficients with respect to the angle of attack in comparison with other models of turbulence [1, 2]. Constants which give the best convergence of calculated and experimental data are determined for the «SST k- ω » model. The results obtained will allow application of this flow model to optimize pitot-static systems.

Keywords:

passenger aircraft, aerodynamic coefficients, model of turbulence, optimization

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