환경 에너지 시설 내 발효조, 소화기 및 건조기 유동해석 = Flow analysis of fermenter, digester and dryer environmental in energy facilities

다국어 초록 (Multilingual Abstract)

In this study, the flow analysis of fermentation tank, digester and dryer, which are the main equipment in environmental energy facilities, was carried out. Numerical analysis was carried out with the size of the actual plant, and 3D modeling program CATIA V5 R16, grid generation program Gambit, and general purpose flow analysis package ANSYS-FLUENT (v13) were used. Simulation results of the carrier gas flow analysis in the STD dryer using the computational fluid dynamics program showed that the carrier gas smoothly circulated between the shells of the dryer and the flow was uniformly distributed without stagnation or flow. It is also predicted that rotational flow due to shell rotation is active. The average flow velocity of carrier gas in the STD dryer was estimated to be about 0.196m / s, and the average temperature of the carrier gas was calculated to be 424K. Due to the relatively slow carrier gas velocity and high average temperature, the water content of the sludge can be effectively lowered.

참고문헌 (Reference)

1 Park, S.K, "The Optimum Design of Flow Characteristics in Fermentation" 117-121, 2011

2 Park, D.Y, "Drying performance changing of temperature in the sludge dryer with disk heating" 931-935, 2011

3 ANSYS Inc., "ANSYS Fluent 13.0 User’s Guide"

4 Lee, S.Y, "A study on the Industrial Mixer with Various Type of Impellers and Various Rotating Speed by CFD" 29-34, 2010

5 김태식, "3단 회전식 건조기의 내부 유동에 관한 수치해석" 한국동력기계공학회 9 (9): 51-58, 2005