Open AccessCFD optimization of a pellet burner
Author(s) -
Lars Westerlund,
Roger Hermansson,
Michel Cervantes
Publication year - 2012
Publication title -
thermal science/thermal science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.339
H-Index - 43
eISSN - 2334-7163
pISSN - 0354-9836
DOI - 10.2298/tsci110609135w
Subject(s) - combustor , pellet , computational fluid dynamics , combustion , work (physics) , process engineering , nuclear engineering , gas burner , computer science , mechanical engineering , environmental science , automotive engineering , materials science , mechanics , engineering , chemistry , physics , organic chemistry , composite material
Increased capacity of computers has made CFD technology attractive for the design of different apparatuses. Optimization of a pellet burner using CFD was investigated in this paper. To make the design tool work fast, an approach with only mixing of gases was simulated. Other important phenomena such as chemical reactions were omitted in order to speed up the design process. The original design of the burner gave unsatisfactory performance. The optimized design achieved from simulation was validated and the results show a significant improvement. The power output increased and the emission of unburned species decreased but could be further reduced. The contact time between combustion gases and secondary air was probably too short. An increased contact time in high temperature conditions would possibly improve the design further