Similarity Solutions of Jet Development Mixing Layers Using Algebraic and 1-Equation Turbulence Models

  • Tesař V
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Abstract

Mixing layers are formed between two parallel fluid streams having different velocities. One of the velocities may be zero, as is the usual case of the mixing layer that surrounds, immediately downstream from the nozzle, the core of a developing jet issuing into stagnant surroundings. Earlier – but so far not properly published – experimental evidence shows a remarkably weak effect of transversal curvature, making the present solution applicable with acceptable precision to description of developing round jets. This paper presents solutions of a planar mixing layer by a similarity transformation, which reduces the problem to solving ordinary differential equations. Two solutions are investigated: one based on an algebraic model and the other using the 1-equation model of turbulence. They are compared with recent results of PIV measurements of a developing jet.

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Tesař, V. (2006). Similarity Solutions of Jet Development Mixing Layers Using Algebraic and 1-Equation Turbulence Models. Acta Polytechnica, 46(1). https://doi.org/10.14311/804

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