Unstady heat-mass-transfer and fuel distributions in flows downstream the gas-dynamic flame holder


A model of non-stationary heat and mass transfer of fuel droplets with a swirling air flow is developed. The model includes the definition of the air flow structure, identification of configurations of liquid jets flowing into the air flow, the calculation of characteristics of their breakup taking into account the processes of drop breaking and coalescence, the calculation of droplet and fuel vapor concentration distribution in the work volume. The study was performed as applied to a combustion chamber with a front gas-dynamic flame holder. The optimal combination of major gas-dynamic parameters that determine the mode of operation of the device in question – the value of the air flow swirl and the intensity of the air traverse feed through the flame holder – is determined. The flow structure and the distribution of liquid-droplet and vaporous fuel concentrations downstream the flame holder are specified for this combination. The calculation results are compared with the experimental data.

About the authors

V. V. Tretyakov

Central Institute of Aviation Motors

Author for correspondence.
Email: tretjak@ciam.ru

Russian Federation

Candidate of Science (Physics and Mathematics)
Associate Professor, leading research scientist

A. A. Sviridenkov

Central Institute of Aviation Motors

Email: sviriden@ciam.ru

Russian Federation

senior research scientist


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