Film cooling with using the decomposition of an NH3 cooling stream as a chemical heat sink
文献类型：期刊论文
| 作者 | Cheng KeYong1,2; Chen Wei1,2; Liang ShiQiang1; Guo YongXian1; Huai XiuLan1; Gui XiaoHong1 |
| 刊名 | CHINESE SCIENCE BULLETIN
 |
| 出版日期 | 2012-09-01 |
| 卷号 | 57期号:27页码:3652-3659 |
| 关键词 | reaction heat sink film cooling heat transfer numerical simulation |
| 英文摘要 | The inlet temperatures of gas turbines are generally increasing over time, so conventional cooling methods are likely to approach their useful limits. It is therefore essential to investigate novel cooling methods. Based on the theory of heat transfer enhancement, a novel film cooling method for gas turbine blades using a chemical heat sink is proposed. In this method, the endothermic reaction of an NH3 cooling stream heated by the main gas stream takes place, reducing the convective heat transfer between the mainstream and the blades. Therefore, film cooling effectiveness is improved. To test the feasibility of the proposed method, numerical simulations were conducted, using the classical flat plate with a 30 degree angled cylindrical hole (diameter, D). Film cooling effectiveness at different blowing ratios (M = 0.5, 1.0, and 1.5) were computed and compared with the results of conventional cooling methods. The simulation results show that the proposed method can enhance film cooling effectiveness not only in the stream-wise direction, but also in the span-wise direction. The span-averaged film effectiveness is improved in the presence of a chemical heat sink, with the value of X/D (the ratio of downstream distance from the center of the film hole to the diameter of the film hole) increasing downstream of the film hole. The novel film cooling approach showed the best performance at M = 0.5. |
| WOS标题词 | Science & Technology |
| 类目[WOS] | Multidisciplinary Sciences |
| 研究领域[WOS] | Science & Technology - Other Topics |
| 关键词[WOS] | SHAPED HOLE ; ENHANCEMENT ; SIMULATION ; INJECTION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000308439500018 |
| 公开日期 | 2015-12-22 |
| 源URL | [http://ir.etp.ac.cn/handle/311046/101539]  |
| 专题 | 工程热物理研究所_中国科学院工程热物理所（论文库）_期刊论文（SCI） |
| 作者单位 | 1.Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cheng KeYong,Chen Wei,Liang ShiQiang,et al. Film cooling with using the decomposition of an NH3 cooling stream as a chemical heat sink[J]. CHINESE SCIENCE BULLETIN,2012,57(27):3652-3659. |
| APA | Cheng KeYong,Chen Wei,Liang ShiQiang,Guo YongXian,Huai XiuLan,&Gui XiaoHong.(2012).Film cooling with using the decomposition of an NH3 cooling stream as a chemical heat sink.CHINESE SCIENCE BULLETIN,57(27),3652-3659. |
| MLA | Cheng KeYong,et al."Film cooling with using the decomposition of an NH3 cooling stream as a chemical heat sink".CHINESE SCIENCE BULLETIN 57.27(2012):3652-3659. |
入库方式： OAI收割
来源：工程热物理研究所
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