Gas turbines normally have the rotating and stationary parts. The rotational blades always need clearance to rotation. Blade tip clearance is one of the important parameters affecting performance, safety and stability of a gas turbine engine. However, it is difficult to measure the tip clearance accurately during the tests. The numerical studies are important methods to study the tip clearance effects. Tip clearance effects have been studied for a long time. However, there are still many aspects that are not fully understood and industries still don’t have a good way to perform design with minimum tip clearance losses. In the gas turbine design, the tip clearance considerations are very critical for both performance and reliability. In this paper, we perform the numerical study on the tip clearance impacts during the aerodynamic design, especially the blade loading through blade counts. The study found that the proper blade loading could reduce the tip clearance sensitivity and reduce the tip clearance losses. In the cases of reasonable number of blades, the effect of clearance on the total pressure loss and efficiency had a linear relationship. But in the cases of small number of blades, the effect of clearance on the total pressure loss and efficiency is no longer linear. The study helped turbine designers to consider blade loading and tip clearance together during the turbine design.
| Published in |
International Journal of Fluid Mechanics & Thermal Sciences (Volume 6, Issue 4)
This article belongs to the Special Issue Fluid Mechanics & Thermal Sciences in Turbomachines |
| DOI | 10.11648/j.ijfmts.20200604.11 |
| Page(s) | 95-107 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2024. Published by Science Publishing Group |
Gas Turbine, Blade Loading, Tip Clearance, Computational Fluid Dynamics (CFD)
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APA Style
Limin Wang, Yadong Liu, Chengqin Li. (2020). Computational Analysis of the Blade Loading on Tip Clearance Effects. International Journal of Fluid Mechanics & Thermal Sciences, 6(4), 95-107. https://doi.org/10.11648/j.ijfmts.20200604.11
ACS Style
Limin Wang; Yadong Liu; Chengqin Li. Computational Analysis of the Blade Loading on Tip Clearance Effects. Int. J. Fluid Mech. Therm. Sci. 2020, 6(4), 95-107. doi: 10.11648/j.ijfmts.20200604.11
AMA Style
Limin Wang, Yadong Liu, Chengqin Li. Computational Analysis of the Blade Loading on Tip Clearance Effects. Int J Fluid Mech Therm Sci. 2020;6(4):95-107. doi: 10.11648/j.ijfmts.20200604.11
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Download@article{10.11648/j.ijfmts.20200604.11,
author = {Limin Wang and Yadong Liu and Chengqin Li},
title = {Computational Analysis of the Blade Loading on Tip Clearance Effects},
journal = {International Journal of Fluid Mechanics & Thermal Sciences},
volume = {6},
number = {4},
pages = {95-107},
doi = {10.11648/j.ijfmts.20200604.11},
url = {https://doi.org/10.11648/j.ijfmts.20200604.11},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijfmts.20200604.11},
abstract = {Gas turbines normally have the rotating and stationary parts. The rotational blades always need clearance to rotation. Blade tip clearance is one of the important parameters affecting performance, safety and stability of a gas turbine engine. However, it is difficult to measure the tip clearance accurately during the tests. The numerical studies are important methods to study the tip clearance effects. Tip clearance effects have been studied for a long time. However, there are still many aspects that are not fully understood and industries still don’t have a good way to perform design with minimum tip clearance losses. In the gas turbine design, the tip clearance considerations are very critical for both performance and reliability. In this paper, we perform the numerical study on the tip clearance impacts during the aerodynamic design, especially the blade loading through blade counts. The study found that the proper blade loading could reduce the tip clearance sensitivity and reduce the tip clearance losses. In the cases of reasonable number of blades, the effect of clearance on the total pressure loss and efficiency had a linear relationship. But in the cases of small number of blades, the effect of clearance on the total pressure loss and efficiency is no longer linear. The study helped turbine designers to consider blade loading and tip clearance together during the turbine design.},
year = {2020}
}
TY - JOUR T1 - Computational Analysis of the Blade Loading on Tip Clearance Effects AU - Limin Wang AU - Yadong Liu AU - Chengqin Li Y1 - 2020/11/16 PY - 2020 N1 - https://doi.org/10.11648/j.ijfmts.20200604.11 DO - 10.11648/j.ijfmts.20200604.11 T2 - International Journal of Fluid Mechanics & Thermal Sciences JF - International Journal of Fluid Mechanics & Thermal Sciences JO - International Journal of Fluid Mechanics & Thermal Sciences SP - 95 EP - 107 PB - Science Publishing Group SN - 2469-8113 UR - https://doi.org/10.11648/j.ijfmts.20200604.11 AB - Gas turbines normally have the rotating and stationary parts. The rotational blades always need clearance to rotation. Blade tip clearance is one of the important parameters affecting performance, safety and stability of a gas turbine engine. However, it is difficult to measure the tip clearance accurately during the tests. The numerical studies are important methods to study the tip clearance effects. Tip clearance effects have been studied for a long time. However, there are still many aspects that are not fully understood and industries still don’t have a good way to perform design with minimum tip clearance losses. In the gas turbine design, the tip clearance considerations are very critical for both performance and reliability. In this paper, we perform the numerical study on the tip clearance impacts during the aerodynamic design, especially the blade loading through blade counts. The study found that the proper blade loading could reduce the tip clearance sensitivity and reduce the tip clearance losses. In the cases of reasonable number of blades, the effect of clearance on the total pressure loss and efficiency had a linear relationship. But in the cases of small number of blades, the effect of clearance on the total pressure loss and efficiency is no longer linear. The study helped turbine designers to consider blade loading and tip clearance together during the turbine design. VL - 6 IS - 4 ER -
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