In this study, the effects of swirl intensity on the heating process of a gas stream, which is introduced into an inner hot gas region of a swirling tubular flame, have been investigated. In order to obtain fundamental knowledge on the heating system with a tubular flame, a burner with variable swirl intensities has been made and the effects of the swirl number on the flame characteristics and the temperature fields have been experimentally investigated. In addition, using a PIV system, the flow fields are visualized in detail under combustion conditions as well as under cold flow conditions to discuss the heating process in detail. Main results obtained are (1) The tubular flame can be established for a wide range in the equivalence ratio and the flow rate of the combustible mixture. Even when a cold air stream is introduced into the tubular flame, the flame is stable and the air stream is heated gradually along the axis of the burner. (2) The temperature rise on the axis of the burner is slow for the swirl numbers 0.35 and 0.7, whereas it is fast for the swirl number of 1.4. (3) Detailed flow visualization under combustion conditions has shown that, in contrast to cold flow conditions, the central air stream is laminarized due to the axial gas expansion of the burned gas, which suggests that the enhancement of the heating rate with an increase of the swirl number can be explained mainly through an increase of the heat transfer area between the two streams induced by the rotational motion of the swirl burner.
Skip Nav Destination
ASME/JSME/KSME 2015 Joint Fluids Engineering Conference
July 26–31, 2015
Seoul, South Korea
Conference Sponsors:
- Fluids Engineering Division
ISBN:
978-0-7918-5732-8
PROCEEDINGS PAPER
An Experimental Study on the Heating Process With a Premixed Tubular Flame
Baolu Shi,
Baolu Shi
Beijing Institute of Technology, Beijing, China
Search for other works by this author on:
Daisuke Shimokuri,
Daisuke Shimokuri
Hiroshima University, Kagamiyama, Japan
Search for other works by this author on:
Satoru Ishizuka
Satoru Ishizuka
Hiroshima University, Kagamiyama, Japan
Search for other works by this author on:
Jie Hu
Hiroshima University, Kagamiyama, Japan
Baolu Shi
Beijing Institute of Technology, Beijing, China
Daisuke Shimokuri
Hiroshima University, Kagamiyama, Japan
Satoru Ishizuka
Hiroshima University, Kagamiyama, Japan
Paper No:
AJKFluids2015-16644, V01AT16A006; 6 pages
Published Online:
April 4, 2016
Citation
Hu, J, Shi, B, Shimokuri, D, & Ishizuka, S. "An Experimental Study on the Heating Process With a Premixed Tubular Flame." Proceedings of the ASME/JSME/KSME 2015 Joint Fluids Engineering Conference. Volume 1A: Symposia, Part 2. Seoul, South Korea. July 26–31, 2015. V01AT16A006. ASME. https://doi.org/10.1115/AJKFluids2015-16644
Download citation file:
9
Views
Related Proceedings Papers
Related Articles
Combustion Instabilities and Control of a Multiswirl Atmospheric Combustor
J. Eng. Gas Turbines Power (January,2007)
Analytical and Experimental Study of Combustion and Heat Transfer in Submerged Flame Metal Fiber Burners/Heaters
J. Heat Transfer (February,2003)
Numerical Simulation of Swirl-Stabilized Premixed Flames With a Turbulent Combustion Model Based on a Systematically Reduced Six-Step Reaction Mechanism
J. Eng. Gas Turbines Power (October,2001)
Related Chapters
Lay-Up and Start-Up Practices
Consensus on Operating Practices for Control of Water and Steam Chemistry in Combined Cycle and Cogeneration
Adding Surface While Minimizing Downtime
Heat Exchanger Engineering Techniques
The Identification of the Flame Combustion Stability by Combining Principal Component Analysis and BP Neural Network Techniques
International Conference on Mechanical Engineering and Technology (ICMET-London 2011)