TED-AJ03-175 CONTINUUM AND DISCRETE APPROACHES FOR DENSE GAS-PARTICLE TWO-PHASE FLOW

概要

論文の詳細を見る
The detailed descriptions of continuum and discrete approaches, both of which have been used to simulate dense gas-particle two-phase flow in gas fluidized beds are given. The discrete approach is based on the analysis of the motion of individual particles and has the advantage that there is no need for global assumptions such as computational conditions and constitutive equations. The continuum approach is based on the idea of interpenetrating continua and the Eulerian frame of reference. The former is naturally suited to fundamental studies and useful in understanding the mechanisms, but it is difficult to adapt this approach to practical purposes. The latter meets not only its theoretical justification for denser flows, but has been widely employed for numerical simulations for practice. Its fatal deficiency is the determination of constitutive relations and estimation of thermal properties for solid phase. In this work, both models are employed to simulate the dense gas-particle two-phase flow in gas fluidized beds. Both of them give quite similar results. Quantitatively, a large difference is observed between the results of both models.
一般社団法人日本機械学会の論文