Centerline Velocity Decay of Compressible Free Jets
1974; American Institute of Aeronautics and Astronautics; Volume: 12; Issue: 4 Linguagem: Inglês
10.2514/3.49262
ISSN1533-385X
Autores Tópico(s)Aerodynamics and Acoustics in Jet Flows
ResumoTheme A empirically determined formulation for the eddy viscosity is introduced into the turbulent axially symmetric compressible free jet theory of Kleinstein. * The easily evaluated algebraic equation that results shows excellent agreement with an extensive compilation of experimental data for the centerline velocity decay in the main region. It is found that the eddy viscosity can be treated as constant, with functional dependence on only the exit Mach number and the jet-to-freestream density ratio. The theory presented is applicable to the main region of most classes of free jets, including heterogeneous, nonisothermal, and subsonic and properly-expanded supersonic flows.
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