TY - JOUR
TI - Three phase Eulerian-granular model applied on numerical simulation of non-conventional liquid fuels combustion in a bubbling fluidized bed
AU - Nemoda Stevan Đ
AU - Mladenović Milica R
AU - Paprika Milijana
AU - Erić Aleksandar M
AU - Grubor Borislav
JN - Thermal Science
PY - 2016
VL - 20
IS - 11
SP - 133
EP - 149
PT - Article
AB - The paper presents a two-dimensional CFD model of liquid fuel combustion in  bubbling fluidized bed. The numerical procedure is based on the two-fluid  Euler-Euler approach, where the velocity field of the gas and particles are  modeled in analogy to the kinetic gas theory. The model is taking into  account also the third - liquid phase, as well as its interaction with the  solid and gas phase. The proposed numerical model comprise energy equations  for all three phases, as well as the transport equations of chemical  components with source terms originated from the component conversion. In the  frame of the proposed model, user sub-models were developed for heterogenic  fluidized bed combustion of liquid fuels, with or without water. The results  of the calculation were compared with experiments on a pilot-facility (power  up to 100 kW), combusting, among other fuels, oil. The temperature profiles  along the combustion chamber were compared for the two basic cases:  combustion with or without water. On the basis of numerical experiments,  influence of the fluid-dynamic characteristics of the fluidized bed on the  combustion efficiency was analyzed, as well as the influence of the fuel  characteristics (reactivity, water content) on the intensive combustion zone.  [Projekat Ministarstva nauke Republike Srbije, br. TR33042: Improvement of  the industrial fluidized bed facility, in scope of technology for energy  efficient and environmentally feasible combustion of various waste materials  in fluidized bed]