Dust flames are associated with two-phase combustion phenomena where flame characteristics depend\non interactions between solid and gas phases. Since organic dust particles can be effectively utilized in energy\nproduction systems, investigation of this phenomenon is essential. In this study, an analytical model is presented\nto simulate the combustion process of moist organic dust. The flame structure is divided into three zones: preheat\nzone, reaction zone, and postflame zone. To determine the effects of moisture content and volatile evaporation, the\npreheat zone is also divided into four subzones: first heating subzone and drying subzone, second heating subzone,\nand volatile evaporation subzone. The results obtained from the presented model are in reasonable agreement with\nexperimental data for lycopodium particles. An increase in moisture content causes a reduction in burning velocity\nowing to moisture evaporation resistance. Consequently, the effects of some important parameters, like volatilization\ntemperature, volatilization Damk�¶hler number and drying Damk�¶hler number are investigated. In special cases,\nlike high moisture content, low volatilization temperature, and high drying resistance, the second heating subzone\nis omitted.
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