doi: 10.7763/IJET.2012.V4.393
Self-Excited Combustion Instability in Rijke-Zhao Tube with Bifurcating Branches
,
Dan Zhao
- the Aerospace Engineering Division, Nanyang Technological University, 639798 Singapore
Abstract
Combustion instabilities are caused by a coupling between unsteady heat release and acoustic pressure waves, which is characterized by large amplitude pressure oscillations. In this work, combustion instability in a Rijke-Zhao tube is considered. It has a mother tube (bottom stem), which splits into two bifurcating daughter tubes (i.e. upper branches) with different lengths. As a premixed laminar flame is placed inside the mother tube, it provides a mechanism to produce self-excited combustion oscillations (also known as combustion instabilities). In order to investigate the Rijke-Zhao combustion instabilities, 2D numerical simulation of two different configurations of Rijke-Zhao tube by using Fluent 13.0 is conducted. Comparison is then made between numerical results and our experimental ones. Good agreement is observed.
Keywords
- Rijke-zhao tube
- bifurcating branches
- thermo acoustic oscillation
- combustion instability
How to Cite
Zhiyuan Zhong and Dan Zhao, "Self-Excited Combustion Instability in Rijke-Zhao Tube with Bifurcating Branches," International Journal of Engineering and Technology, vol. 4, no. 4, pp. 396-399, 2012. https://doi.org/ 10.7763/IJET.2012.V4.393
Copyright & License
Copyright © 2012 by the authors. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).