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《Power Engineering》 2001-02
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Influence of Bluff-Body on Concentration Enrichment Process through Deceleration and Diffusion Process

JIN Yan, WEI Yong hua, XIONG Fan fan, ZHANG Hai xia, ZHENG Qia yu, YAN De zhong (Department of Thermal Engrg., Qinghua Univ., Beijing 100084)  
This paper presents a new concept that particle concentration enrichment process through deceleration and diffusion process is the basis of fuel rich combustion technology. The mechanism of these two processes is investigated in this paper. In a cold model the author uses Particle Dynamic Analyzer(PDA) to study the concentration enrichment and diffusion processes when there is a bluff body near the primary air exit. The experimental results show that a bluff body is helpful to the concentration enrichment and diffusion processes. Besides this paper first verifies that there indeed exist concentration enrichment and diffusion processes. Figs 6 and refs 4.
【CateGory Index】: TK227.1
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