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http://dx.doi.org/10.3795/KSME-B.2006.30.1.048

Effect of Swirling Flow by Normal Injection of Secondary Air on the Gas Residence Time and Mixing Characteristics in a Combustor  

Park Sang-Uk (연세대학교 대학원 기계공학부)
Jeon Byoung-Il (연세대학교 대학원 기계공학부)
Yu Tae-U (한국생산기술연구원)
Hwang Jung-Ho (연세대학교 기계공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.30, no.1, 2006 , pp. 48-56 More about this Journal
Abstract
We investigated gas residence time and mixing characteristics due to various swirl numbers generated by normal injection of secondary air to a lab-scale cylinderical combustor. The residence time was estimated by measuring the temporal pressure difference which was caused by deposition of test particles on a filter media after the injection by a syringe. The mixing characteristics were evaluated by standard deviation value of test gas concentration at different measuring points. The test gas concentration was detected by a gas analyzer. The swirl number of $20{\sim}30$ for ${\theta}=5^{\circ}$ caused long residence time enough to improve mixing characteristics. Numerical calculations were also carried out to understand physical meanings of the experimental results.
Keywords
Swirl; Residence Time; Recirculation Flow; Mixing Characteristics;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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