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http://dx.doi.org/10.3795/KSME-B.2013.37.12.1079

Numerical Study of Flow Characteristics in a Solid Particle Incinerator for Various Design Parameters of Injectors  

Son, Jin Woo (Dept. of Mechanical Engineering, Sejong Univ.)
Kim, Su Ho (Dept. of Mechanical Engineering, Sejong Univ.)
Sohn, Chae Hoon (Dept. of Mechanical Engineering, Sejong Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.37, no.12, 2013 , pp. 1079-1089 More about this Journal
Abstract
The flow characteristics in a solid particle incinerator are investigated numerically for high burning rate of wastes. The studied incinerator employs both a swirl flow used in the furnace of powerplants and a design concept applied to a rocket combustor. As the first step, the non-reactive flow field is analyzed in the incinerator with primary and secondary injectors through which solid fuel and air are injected. The deflection angle of a primary injector, inclination angle of a secondary injector, and gap between the two types of injectors are selected as design parameters. The swirl number is adopted for evaluating the degree of swirl flow and estimated over wide ranges of three parameters. The swirl number increases with deflection angle, but it is affected little by inclination angle. Recirculation zones are formed near the injectors, and their size affects the swirl number. The swirl number decreases with the zonal size of recirculation. From the numerical results, the design points can be found with strong swirl flow.
Keywords
Incinerator; Injector; Non-Reactive Flow; Swirl Number; Recirculation Zone;
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