Local flow structure during injection of a radial annular gas-droplet jet into a cross-cross turbulent gas flow

M. A. Pakhomov, V. I. Terekhov

S.S. Kutateladze Institute of Thermophysics, Siberian Division of the Russian Academy of Sciences

Abstract: A numerical analysis of the flow structure and thermal efficiency of a gas-droplet jet injected through a radial annular slot into a transverse single-phase air flow is performed. The calculations are performed using the axisymmetric RANS approach in the following range of variation of the main parameters of the two-phase flow. Gas turbulence is described using the Reynolds stress component transfer model recorded taking into account the two-phase flow. An increase in the blowing ratio in the range of $m$ = 0.5–4 causes a significant increase in the separation region length by almost 3 times. An increase in the blowing ratio leads to an increase in the friction coefficient.

Keywords: RANS, numerical modeling, Reynolds stress transport model, turbulence, radial slot gas-droplet jet, transverse flow, pipe, flow structure.

Received: 10.04.2025
Revised: 03.05.2025
Accepted: 03.05.2025

DOI: 10.61011/PJTF.2025.15.60804.20341

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