Flow and heat transfer for the mist/steam two-phase flow in the U-shaped channel with column-row-ribs and solid ribs | |
Jiang, Guangwen2; Gao, Jianmin1 | |
刊名 | APPLIED THERMAL ENGINEERING |
2023-01-05 | |
卷号 | 218 |
关键词 | Gas turbine blade U-shaped passage Column-row-ribs Mist/steam two-phase flow Heat transfer characteristics |
ISSN号 | 1359-4311;1873-5606 |
DOI | 10.1016/j.applthermaleng.2022.119277 |
产权排序 | 1 |
英文摘要 | The comparison of flow field and heat transfer characteristics for the new mist/steam working fluid inside the U-shaped internal cooling channel of the gas turbine blades roughed with new V-45 deg. Column-Row-Ribs and V-45 deg. solid ribs are conducted under the limited working conditions in this work. First, the secondary flow vortex and droplets distribution in channels with different turbulators were analyzed. Then, qualitative heat transfer comparison of these two different ribbed channels was conducted. Furthermore, the quantitative analysis of heat transfer enhancement and heat transfer uniformity was presented under the condition of different mist/steam mass ratio (mist/steam) and droplets diameter (D-0). Through the analysis, it is seen that the Mainstream Secondary Flow Vortexes in U-shaped channel roughed with 45 degrees V-shaped Column-Row-Ribs has the similar structure as the channel with 45 degrees V-shaped solid ribs. The droplets have a more even distribution in U-shaped channel roughed with 45 degrees V-shaped Column-Row-Ribs than channel with 45 degrees V-shaped solid ribs. And the new Column-Row-Ribs will help to solve the problem that the droplets deposit at the windward side of the solid ribbed channel, which benefits to promote the heat transfer evenness of the heated wall. The results proved that the U-shaped channel with 45 degrees V-shaped Column-Row-Ribs cooled with the mist-steam coolant has better heat transfer characteristics than the 45 degrees V-shaped solid ribs. For the U-shaped channel, there exists a best droplet diameter which can achieve the highest heat transfer enhancement. |
语种 | 英语 |
出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
WOS记录号 | WOS:000856567100001 |
内容类型 | 期刊论文 |
源URL | [http://ir.opt.ac.cn/handle/181661/96156] |
专题 | 热控技术研究室 |
通讯作者 | Jiang, Guangwen |
作者单位 | 1.Xi An Jiao Tong Univ, Western China Inst Qual Sci & Technol, 28 Xianning West Rd, Xian 710049, Shaanxi, Peoples R China 2.Chinese Acad Sci, Xian Inst Opt & Precis Mech, 17 Xinxi Rd,New Ind Pk, Xian 710119, Shaanxi, Peoples R China |
推荐引用方式 GB/T 7714 | Jiang, Guangwen,Gao, Jianmin. Flow and heat transfer for the mist/steam two-phase flow in the U-shaped channel with column-row-ribs and solid ribs[J]. APPLIED THERMAL ENGINEERING,2023,218. |
APA | Jiang, Guangwen,&Gao, Jianmin.(2023).Flow and heat transfer for the mist/steam two-phase flow in the U-shaped channel with column-row-ribs and solid ribs.APPLIED THERMAL ENGINEERING,218. |
MLA | Jiang, Guangwen,et al."Flow and heat transfer for the mist/steam two-phase flow in the U-shaped channel with column-row-ribs and solid ribs".APPLIED THERMAL ENGINEERING 218(2023). |
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