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ORIGINAL ARTICLE
Effects of scaling laws on flow and combustion characteristics of lean premixed swirl burners
1
Institute of Turbomachinery, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, P.R. China
Submission date: 2022-05-23
Acceptance date: 2022-10-27
Publication date: 2022-12-20
Corresponding author
Bing Ge
Institute of Turbomachinery, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, P.R. China
Institute of Turbomachinery, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, P.R. China
J. Glob. Power Propuls. Soc. 2022;6:343-353
KEYWORDS
TOPICS
ABSTRACT
Modern heavy gas turbine combustors are always huge, so it is difficult and costly to do experiment. Thus, geometry scaling method has come into sight. In this paper, based on a single lean premixed swirl burner, validated computational fluid dynamic (CFD) model was used to study the effects of different scaling laws on various scalling models from 1/2 to 1/10. Experimental study on prototype combustor and the 3/5 scale model under full operating condition is also carried out to verify the NOx emission under different laws. Results showed that DaI scaling law was able to maintain good similarity under combustion state when scaling factor = 1/2–1/5, while Re scaling law would bring significant changes on flow and flame characteristics. The emission of NOx is also similar to prototype by using Dai law. But Re law could keep flow characteristics under non-combustion state. It is suggested that Dai law is suitable for lean premixed swirl combustor geometry scaling.
FUNDING
National Science and Technology Major Project (2017-V-0012-0064) in China.
COMPETING INTERESTS
Wenda Xie declares that he has no conflict of interest. Ting Shi declares that he has no conflict of interest. Bing Ge declares that he has no conflict of interest. Shusheng Zang declares that he has no conflict of interest.
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