Axial-Swept Influence on Inner Flow Performance of HP Steam Turbine Based on CFD
Joint Authors
Feng, Zi-Ming
Guo, Chenhao
Wei, Bingkun
Cui, Wei
Gu, Huibin
Zhang, Jindong
Source
Mathematical Problems in Engineering
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-07-25
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
Swept blade technology was used to redesign the supercritical steam turbine sets that could improve the inner-efficiency of turbine sets and decrease the consumption of coal the noxious gas such as NOx.
The eighth high-pressure stages, including static and rotor cascades, were selected as tested prototypes that were blew in the low-velocity wind tunnel.
We used the five-hole ball head needle to measure the aerodynamic parameters distribution along the width and span direction of the high-pressure stage cascades.
With the inkblot display technology, the limit flow spectrums were displaced in the blade surface and the endwalls.
These tested data could be used to check the simulation results of CFD software.
To improve the efficiency of the steam turbine high-pressure (HP) stage, we selected the supercritical steam turbine HP stage cascade blade as the prototype to research into its inner flow performance of the axial-swept blade by the CFD software.
Two different redesigned blades, with ±20°, swept angle, and 30% swept height, named axial fore-swept and axial aft-swept, were built up.
The stage passages flow field of the prototype blade, and the two redesigned swept blades were simulated using CFD software with stage interface planes between the stages.
The CFD simulation results indicated that the leading edge of swept blades influenced the inlet flow field; the pressure in aft-swept blade stage in both endwalls was higher than in the middle and was beneficial to improve the passage flow properties of HP stage.
But for the fore-swept HP stage, its pressure distribution was lower in both endwalls than in the middle and not beneficial to passage flow.
American Psychological Association (APA)
Feng, Zi-Ming& Guo, Chenhao& Wei, Bingkun& Cui, Wei& Gu, Huibin& Zhang, Jindong. 2019. Axial-Swept Influence on Inner Flow Performance of HP Steam Turbine Based on CFD. Mathematical Problems in Engineering،Vol. 2019, no. 2019, pp.1-13.
https://search.emarefa.net/detail/BIM-1196088
Modern Language Association (MLA)
Feng, Zi-Ming…[et al.]. Axial-Swept Influence on Inner Flow Performance of HP Steam Turbine Based on CFD. Mathematical Problems in Engineering No. 2019 (2019), pp.1-13.
https://search.emarefa.net/detail/BIM-1196088
American Medical Association (AMA)
Feng, Zi-Ming& Guo, Chenhao& Wei, Bingkun& Cui, Wei& Gu, Huibin& Zhang, Jindong. Axial-Swept Influence on Inner Flow Performance of HP Steam Turbine Based on CFD. Mathematical Problems in Engineering. 2019. Vol. 2019, no. 2019, pp.1-13.
https://search.emarefa.net/detail/BIM-1196088
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1196088