TY - JOUR
TI - Extended semi-analytical model for the prediction of flow and concentration fields in a tangentially-fired furnace
AU - Lotfiani Amin
AU - Khalilarya Shahram
JN - Thermal Science
PY - 2013
VL - 17
IS - 4
SP - 1233
EP - 1243
PT - Article
AB - Tangentially-fired furnaces (TFF) are one of the modified types of furnaces  which have become more attractive in the field of industrial firing systems  in recent years. Multi-zone thermodynamic models can be used to study the  effect of different parameters on the operation of TFF readily and  economically. Flow and mixing sub-model is a necessity in multi-zone models.  In the present work, the semi-analytical model previously established by the  authors for the prediction of the behavior of coaxial turbulent gaseous jets  is extended to be used in a single-chamber TFF with square horizontal  cross-sections and to form the flow and mixing sub-model of the future  multi-zone model for the simulation of this TFF. A computer program is  developed to implement the new extended model. Computational fluid dynamics  (CFD) simulations are carried out to validate the results of the new model.  In order to verify the CFD solution procedure, a turbulent round jet injected  into cross flow is simulated. The calculated jet trajectory and velocity  profile are compared with other experimental and numerical data and good  agreement is observed. Results show that the present model can provide very  fast and reasonable predictions of the flow and concentration fields in the  TFF of interest.