Studies on Structures of Turbulent Swirling Coal Flames by Large-Eddy Simulation

Lixing Zhou; Liyuan Hu

doi:10.20944/preprints202310.0044.v1

Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Version 1 : Received: 1 October 2023 / Approved: 2 October 2023 / Online: 2 October 2023 (05:11:35 CEST)

Swirling coal flames are encountered in swirl burners of boiler furnaces and cyclone coal combustors, and were studied using large-eddy simulation (LES) in reported references. However, the structures of swirling coal flames remain to be further studied. In the present paper LES of swirling coal flames is conducted for two combustors using two gas combustion models. The statistical simulation results are accessed by experiments and the instantaneous simulation results are used to analyze the specific features of flame structures of four cases. It is seen that different inlet flow conditions and different secondary-air flow rate lead to different flame structures

swirling coal combustion; flame structure; large-eddy simulation

Engineering, Energy and Fuel Technology

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Studies on Structures of Turbulent Swirling Coal Flames by Large-Eddy Simulation

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