Investigation of heat transfer and combustion in the advanced Fluidized Bed Combustor (FBC). Technical progress report No. 12, July 1, 1996--September 30, 1996

This technical report summarizes the research conducted and progress achieved during the period from July 1, 1996 to September 30, 1996. An understanding of particle flow characteristics in the strongly swirling turbulent flow field is important to control particulate emission and fuel burnout in the swirling fluidized bed combustor. Numerical simulation was acquired from the particle trajectories by means of the Reynolds Stress Model (REM) with general algebraic expressions. The typical particle trajectories for single particle injection were predicted by the top view, the side view, and the isolated 3-dimensional view. The simulation of particle trajectories showed three different stages: ascending, colliding/bouncing, and slipping stages. Numerical simulation for the bunch particle injection will be continued to understand the particle characteristics in the combustion chamber. The preliminary system test was continued on the hot model. Thermal performance of the preliminary test results was analyzed and predicted. Based upon the preliminary test results, the auxiliary subsystems were modified and improved for the systematic test. The development of the computer-assisted data acquisition system will be continued for the instrumentation of the temperature measurement, the flow measurement, and the emissions measurement