Date of Award


Publication Type

Master Thesis

Degree Name



Mechanical, Automotive, and Materials Engineering

First Advisor

Sobiesiak, Andrzej




The inversed diffusion flame (IDF) burner which is characterized by a double flame structure and ultra-low nitrogen oxide emissions has been studied at the lab scale in this work. This experimental study is intend to investigate the structure of co-axial non-premixed diffusion flames with inversed flow arrangement of methane and air, surrounded with combustion products from a lean flat flame, simulated combustion products, nitrogen and air. The co-flow stream is to simulate the possible gases surrounding the flames inside an industrial furnace. The previous numerical and experimental investigation has studied central air jet flows into the co-annular fuel jet, and then both mixing with the surrounded hot combustion stream from premixed lean flat flame. The present investigation is focused on the same initially non-premixed inversed arrangement with central air and fuel streams flowing into hot combustion products, air, and pre-heated simulated combustion products.