케로신 비예혼합 난류제트화염의 매연입자 생성특성 수치모델링

Abstract

The Direct Quadrature Method of Moments (DQMOM) has been robustly applied for the solution of population balance equation in the wide range of the multi-phase flows including soot formation problem. This method has the inherently interesting features which can be easily applied to the multi-inner and environment variable equation. In addition, DQMOM is capable of easily coupling the gas phase with the discrete phases while it requires the relatively low computational cost compare with other multi-phase methods. In soot evolution process, many complex physical models such as nucleation, particle aggregation, surface growth and oxidation should be modeled. And these physical processes are described through a population balance equation model solved with the DQMOM for soot formation. The present DQMOM approach can realistically represent the evolution of the soot particle number density with modeled inner variable. In this study, turbulence-chemistry interaction is represented by the laminar flamelet model with the presumed PDF approach for the turbulent diffusion flame. The optical thin approximation is adopted to account for the gas and soot particle radiative heat transfer.