This study presents a numerical investigation of momentum, heat transfer, and combustion mechanisms ofnon-premixed swirling flame movement of a cylindrical combustion chamber. Fluent, a commercial CFDsoftware, has been used in calculations. Combinations created with different turbulence models, combustionmodels and reaction mechanisms have been compared with experimental results. Realizable k-epsilon andFR/EDM-4 step combination have increased capacity to predict reacting flow, resulting in better accuracy.FR/EDM-4 step has provided much more reliable results than other scenarios, especially the Flamelet modelused with a detailed chemical mechanism. In addition, the effect of radiation heat transfer on thetemperature field has been investigated. Considering radiation heat transfer causes an increase in heattransfer from the combustion chamber, which provides desired agreement with experimental results. Finally,the effects of different Schmidt numbers on temperature and velocity fields have been investigated. Schmidtnumber has not caused significant changes in the velocity field. Also, as the Schmidt number increases, ithas been observed that the flame temperatures decrease to a certain extent in the combustion chamber.
Authors: Fatih EKER, İlker Yılmaz
Publish Year: 2021
