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Scientific reports of Bukhara State University

Abstract

A comparative analysis of the use of the turbulence model is carried out: the one-parameter Secundov νt-92 model on the problem of an axisymmetric subsonic jet. The calculation results are compared with experimental results on the propagation of speed, voltage, and temperature. The flow is turbulent, therefore, as a mathematical model, the system of Navier-Stokes equations averaged by Reynolds (RANS) is used. For the posed problem, a generalized stream function ψ is introduced. A comparison was made of the results of the νt-92 model with experimental data from [5] the dimensionless axial velocity from the distance to the nozzle.

First Page

82

Last Page

90

DOI

10.52297/2181-1466/2020/4/2/1

References

1. Abramovich G.N., Teoriya turbulentnix strui. - Moskva: Nauka, 1984 g. - 716 s.

2. Spalart P.R., Allmaras S.R. A One-Equation Turbulence Model for Aerodynamic Flows. AIAA-92-0439.

3. Menter F.R. Two-equation eddy viscosity turbulence models for engineering applications. //AIAA J. 1994.32, № 11. P.1299-1310.

4. Shur M., Strelets M., Zaykov L., Gulyaev A., Kozlov V., Sekundov A. Sravnitelnoe chislennoe testirovanie odno i dvux viravnivayushix modeley turbulentnosti dlya techeniy s razdeleniem i prisoedineniem, -AIAA Paper 95-0863, yanvar 1995 g.

5. “Turbulence modeling Resource. NASA Langley Research Center”, http://turbmodels.larc.nasa.gov.

6. Bradshaw P., Ferriss D.H., Atwell N.P. “Calculation of boundary layer development using the turbulent energy equation”, J. Fluid Mech., 1967.

7. Mises R., Zs. angew. Math. u. Mech., 7, 425(1927).

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