Investigation on hybrid thermal features of aero- engines from combustor to turbine

Wang, Tianyi; Xuan, Yimin; Han, Xingsi

doi:10.1016/j.ijheatmasstransfer.2022.123559

Cited by 22 publications

(2 citation statements)

References 43 publications

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“…Higher demands have been imposed on the service performances and accuracy of equipment in major industrial sectors such as aerospace, robotics, transportation, and machine tools, and the influence of temperature is receiving increasing attention as a core indicator for analyzing the operational status of some important structural components of equipment, such as bearings. − In this regard, real-time temperature monitoring techniques with high reliability, accuracy, and efficiency have attracted tremendous research interests.…”

Section: Introductionmentioning

confidence: 99%

Europium/1,3,5-Benzenetricarboxylic Acid Metal–Organic Framework Nanorods Decorated with CdSe Quantum Dots as Coatings for Noncontact Ratiometric Optical Temperature Sensing

Sun

Zhang

Yan

et al. 2023

ACS Appl. Nano Mater.

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The development of temperature sensing platforms based on the dual-emission optical response principle has received much attention for their remarkable potential, while the design of sensitive and reliable thermometers remains an unresolved challenge. Herein, we successfully fabricated a dual-emission temperature probe by attaching CdSe quantum dots to europium/1,3,5-benzenetricarboxylic acid (Eu-BTC) metal–organic framework nanorods, followed by deposition on a POSS-based polymer film, which afforded the construction of a temperature-responsive specialized coating that yielded outstanding temperature responses, high sensitivity, adhesion, and hydrophobicity. The time-dependent effect of the dimensions and quantum dot distribution in the CdSe/Eu-BTC materials was then investigated by reaction time modulation to obtain the best morphology (quantum dot dimension of 3.3 ± 0.8 nm). Due to the contrasting thermally responsive photoluminescent behaviors of CdSe quantum dots and Eu-BTC, temperature-dependent measurements revealed that the specialized coating exhibited significant exponential temperature sensing performances (R 2 = 0.99772) and high relative sensitivity (3.02%°C–1). Moreover, the specialized coating displayed superior adhesive properties (1.385 MPa on the surface of steel) and hydrophobicity (103°) due to the addition of POSS-based copolymers. This work presents a feasible strategy for designing high-performance solid-state nanoluminescent temperature probes, offering great promise for the development of ratiometric temperature sensing systems with high sensitivity.

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Section: Introductionmentioning

confidence: 99%

Europium/1,3,5-Benzenetricarboxylic Acid Metal–Organic Framework Nanorods Decorated with CdSe Quantum Dots as Coatings for Noncontact Ratiometric Optical Temperature Sensing

Sun

Zhang

Yan

et al. 2023

ACS Appl. Nano Mater.

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“…With increasing demands for energy savings and pollution reductions in many nations, the thermal conversion efficiency of gas turbines and aero engines must also rise. The most straightforward and effective way to enhance efficiency is to raise the inlet temperature of gas turbines and aero engines [1]. However, increasing the inlet temperature causes gas turbine and aero engine blades to experience excessive thermal stress, causing the hot-end components to fail due to reaching the weakening point for basic mechanical characteristics in a high-temperature environment, which is fatal to gas turbines and aero engines.…”

Section: Introductionmentioning

confidence: 99%

Effect of Pore Evolution on Thermal Diffusivity and Radiation Characteristics of Thermal Barrier Coatings after High-Temperature Exposures

Xu,

Zhang

et al. 2023

Coatings

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Studying the impact of pores is crucial to enhancing the service performance of coatings, since they are a typical microstructure feature of thermal barrier coatings. In this paper, a coating prepared by the APS method was employed as the study object, and a scanning electron microscope and optical microscope were used to calculate the porosity after spraying or high-temperature exposures. Based on this, numerical calculations and simulations were used to evaluate the impacts of the pore structure and porosity on the heat conductivity and radiation characteristics of the coating. The results showed that, at high-temperature exposures, the horizontal pores inhibited thermal conductivity and radiation, but the column pores increased heat conductivity and radiation. The heat conductivity of the coating linearly decreased as the porosity increased, whereas the extinction coefficient increased, although at a slower and slower pace. When the porosity reached 15%, if the porosity was further increased, the thermal radiation energy did not change much, indicating that increasing the porosity would only block the heat radiation to a certain amount. This new and time-saving technique for materials research utilizing simulation and numerical computing may be utilized to optimize the microstructure of coatings to increase their service performance.

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Recent research progress in the mechanism and suppression of fusion welding-induced liquation cracking of nickel based superalloys

Yi,

Shan,

Zhao

et al. 2024

Int J Miner Metall Mater

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Investigation on hybrid thermal features of aero- engines from combustor to turbine

Cited by 22 publications

References 43 publications

Europium/1,3,5-Benzenetricarboxylic Acid Metal–Organic Framework Nanorods Decorated with CdSe Quantum Dots as Coatings for Noncontact Ratiometric Optical Temperature Sensing

Europium/1,3,5-Benzenetricarboxylic Acid Metal–Organic Framework Nanorods Decorated with CdSe Quantum Dots as Coatings for Noncontact Ratiometric Optical Temperature Sensing

Effect of Pore Evolution on Thermal Diffusivity and Radiation Characteristics of Thermal Barrier Coatings after High-Temperature Exposures

Recent research progress in the mechanism and suppression of fusion welding-induced liquation cracking of nickel based superalloys

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