CAJ | 학술논문

将空气和惰性物料（石英砂）处理成连续相，采用欧拉方法计算，将细长颗粒（秸杆）视作离散相，采用拉格朗日方法追踪其运动轨迹，从而建立起固相分相模型．基于此模型数值研究了流化床内细长颗粒＼惰性物料混合流化特性．研究发现，在提升管内，由中心向壁面附近区域，细长颗粒的数量浓度有明显的增加；在充分发展区域，细长颗粒的数量浓度分布与提升管人口处浓度分布相似；细长颗粒的取向分布有明显的趋向性，以近于竖直姿态流化运动的细长颗粒的数量百分比明显占优势．
장공기화타성물료（석영사）처리성련속상，채용구랍방법계산，장세장과립（갈간）시작리산상，채용랍격랑일방법추종기운동궤적，종이건립기고상분상모형．기우차모형수치연구료류화상내세장과립＼타성물료혼합류화특성．연구발현，재제승관내，유중심향벽면부근구역，세장과립적수량농도유명현적증가；재충분발전구역，세장과립적수량농도분포여제승관인구처농도분포상사；세장과립적취향분포유명현적추향성，이근우수직자태류화운동적세장과립적수량백분비명현점우세．
In this paper, air and inert materials are treated as continuous phases and disposed with Euler method, slender particles of straw are considered as discrete phase whose movement tracks are traced with Lagrange method, and so a model of part phase of solid is found. Afterward, the fluidization behaviors of mixture of slender particles and quartz sands in a fluidized bed were simulated. It is found that there are evident axial increases of number concentration of slender particles from the central regions to the near-wall regions, in the fully-developed regions, the number concentration of slender particles is identical to the initial number concentration of slender particles in entrance of the riser, the orientation distribution of fluidized slender particles has distinct tendency, and the number percent of slender particles with small Nutation angle is dominant.