| Analysis of Cold Flowfield of Multi—Annular Opposed Jets |
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| 作者姓名： | H.F.Zhao Institute of Engineering Thermophysics Chinese Academy of Sciences Beijing ChinaG.C.Benelli L.Miglietta C.Tanzini ENEL-CRTN Via A.Pisano PISA Italy |
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| 作者单位： | H.F.Zhao Institute of Engineering Thermophysics，Chinese Academy of Sciences，Beijing 100080，ChinaG.C.Benelli L.Miglietta C.Tanzini ENEL-CRTN，Via A.Pisano 120，56100 PISA，Italy |
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| 摘 要： | The technique of the use of multi-annular opposed jets as different from using swirl and bluff body createsan excellent recirculation zone with desired size in a large space.The size of recirculation,the magnitude ofreverse velocity and turbulence intensity are much greater than those formed by bluff body.Factors affectingthe flowfield include the velocity ratio of the opposed jets to the primary air J,the diameter and constructionof the opposed jet ring,secondary air velocity and configuration,and confined or unconfined flow condition andso on.This method is a promising way for flame stabilization in combustion technology.
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| 关 键 词： | 火焰 多环反向喷射 流场分析 |
| 收稿时间： | 15 November 1991 |
Analysis of cold flowfield of multi-annular opposed jets |
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| H.F.Zhao Institute of Engineering Thermophysics,Chinese Academy of Sciences,Beijing ,ChinaG.C.Benelli L.Miglietta C.Tanzini ENEL-CRTN,Via A.Pisano , PISA,Italy.Analysis of cold flowfield of multi-annular opposed jets[J].Journal of Thermal Science,1992,1(2):135-139. |
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| Authors: | H F Zhao G C Benelli L Miglietta G Tanzini |
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| Affiliation: | (1) Institute of Engineering Thermophysics, Chinese Academy of Sciences, 100080 Beijing, China;(2) ENEL-CRTN, Via A. Pisano 120, 56100 Pisa, Italy |
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| Abstract: | The technique of the use of multi-annular opposed jets as different from using swirl and bluff body creates an excellent recirculation zone with desired size in a large space.The size of recirculation,the magnitude of reverse velocity and turbulence intensity are much greater than those formed by bluff body.Factors affecting the flowfield include the velocity ratio of the opposed jets to the primary air J,the diameter and construction of the opposed jet ring,secondary air velocity and configuration,and confined or unconfined flow condition and so on.This method is a promising way for flame stabilization in combustion technology. |
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| Keywords: | multi-annular opposed jets cold flowfield |
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