NUMERICAL AND EXPERIMENTAL STUDY OF A FREE INCOMPRESSIBLE ISOTHERMAL TURBULENT COAXIAL JET

Authors

  • G. R. Ströher Universidade Tecnológica Federal do Paraná
  • C. A. Martins Instituto Tecnológico de Aeronáutica
  • C. R. de Andrade Instituto Tecnológico de Aeronáutica

DOI:

https://doi.org/10.5380/reterm.v9i1-2.61939

Keywords:

coaxial jet, anemometry measurements, turbulence modeling

Abstract

In the present study the free incompressible isothermal turbulent coaxial jet problem is numerically solved, and compared with experimental measurements for different velocity ratio between the inner and the outer streams of the jet. The radial profile of the axial mean velocity was obtained with hot anemometry at different axial positions. Governing equations (mass conservation, momentum, turbulence model) were discretized employing the finite volume method with a segregated solver. The analysis of the experimental results showed that coaxial jet flow fields did not present self-similarity up to z/D=25, and the numerical solution using the Shih’s k ε turbulence model did not match reasonably with the experimental data, with a difference of about ± 10%.

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Published

2010-12-31

How to Cite

Ströher, G. R., Martins, C. A., & de Andrade, C. R. (2010). NUMERICAL AND EXPERIMENTAL STUDY OF A FREE INCOMPRESSIBLE ISOTHERMAL TURBULENT COAXIAL JET. Revista De Engenharia Térmica, 9(1-2), 98–107. https://doi.org/10.5380/reterm.v9i1-2.61939

Issue

Vol. 9 No. 1-2 (2010)

Section

Ciência/Science

License

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