Impacts of Startup, Shutdown and Load Variation on Transient Temperature and Thermal Stress Fields within Blades of Gas Turbines

Cai, Liuxi; Hou, Yanfang; Li, Fang; Li, Yun; Wang, Shunsen; Mao, Jing-ru

doi:10.1007/s11630-022-1603-z

Cited by 4 publications

(1 citation statement)

References 20 publications

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“…For gas turbine aero engines, Zhiyuan et al [ 28 ] proposed a self-improving active transient protection control approach based on model-based strategies with the goal of proactive handling of the surge margin limit and turbine entry temperature limit throughout the life cycle. Liuxi et al [ 29 ] examined a transient flow and thermal-fluid-solid coupling to analyse the transient flow and the temperature field of the blade under start-up, shutdown, and varied load conditions.…”

Section: Introductionmentioning

confidence: 99%

Three Shaft Industrial Gas Turbine Transient Performance Analysis

Salilew

Karim

Lemma

et al. 2023

Sensors

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The power demand from gas turbines in electrical grids is becoming more dynamic due to the rising demand for power generation from renewable energy sources. Therefore, including the transient data in the fault diagnostic process is important when the steady-state data are limited and if some component faults are more observable in the transient condition than in the steady-state condition. This study analyses the transient behaviour of a three-shaft industrial gas turbine engine in clean and degraded conditions with consideration of the secondary air system and variable inlet guide vane effects. Different gas path faults are simulated to demonstrate how magnified the transient measurement deviations are compared with the steady-state measurement deviations. The results show that some of the key measurement deviations are considerably higher in the transient mode than in the steady state. This confirms the importance of considering transient measurements for early fault detection and more accurate diagnostic solutions.

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Section: Introductionmentioning

confidence: 99%

Three Shaft Industrial Gas Turbine Transient Performance Analysis

Salilew

Karim

Lemma

et al. 2023

Sensors

View full text Add to dashboard Cite

show abstract

Research on multi-disciplinary coupling mechanism between internal flow heat transfer and solid deformation in turbine

Zhang,

Zou,

Wang

et al. 2024

Aerospace Science and Technology

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In-service load calculation surrogate models for high-pressure turbine blade life digital twin

Li,

Sun,

Wang

et al. 2023

International Journal of Turbo &Amp; Jet-Engines

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There are developed methods for high-pressure turbine (HPT) blade loads and remaining useful life (RUL) prediction; however, they are ineffective and time-consuming for in-service HPT blades under actual operating conditions. Hence, it is necessary to use an acceptable computational effort to predict the HPT blade’s load and in-service lifetime. Drawing from the idea of the usage-based life (UBL) prediction method, this paper first proposes a framework for the life digital twin (LDT) to characterize and track the in-service life consumption of the HPT blades under actual operating conditions. The second work mainly focuses on developing the steady-state and transient load calculation surrogate models for the HPT blade’s LDT. Using the developed surrogate models, it can now calculate the steady-state and transient loads of the HPT blade in an acceptable time with the necessary accuracy. The proposed approach is demonstrated on an HPT blade of a typical commercial turbofan engine. Because the operating load of the HPT blade severely affects its in-service lifetime, the application of this approach enables the construction of an LDT of the HPT blade. It can reduce the uncertainty and variability associated with the in-service life prediction of the HPT blade under actual operating conditions.

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Impacts of Startup, Shutdown and Load Variation on Transient Temperature and Thermal Stress Fields within Blades of Gas Turbines

Cited by 4 publications

References 20 publications

Three Shaft Industrial Gas Turbine Transient Performance Analysis

Three Shaft Industrial Gas Turbine Transient Performance Analysis

Research on multi-disciplinary coupling mechanism between internal flow heat transfer and solid deformation in turbine

In-service load calculation surrogate models for high-pressure turbine blade life digital twin

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