Simulation analysis of La2Ce2O7 thermal barrier coating in marine internal combustion engine

IF 6.4 2区工程技术 Q1 THERMODYNAMICS

Case Studies in Thermal Engineering Pub Date : 2024-11-26 DOI:10.1016/j.csite.2024.105564

Bin Jiang, Zuoqin Qian, Chunhui Wang, Chunguang Fei, Siwei Zhu, Zihao Shu, Yuxuan Du, XinYu Wang

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引用次数: 0

Abstract

In the realm of thermal barrier coating (TBC) technology's applications, YSZ is ubiquitously employed as a ceramic coating material owing to its superior thermal insulation capabilities and its adept thermal expansion compatibility in high-temperature settings. However, YSZ is susceptible to cracking and phase transformation from the tetragonal to the monoclinic phase, a phenomenon that is exacerbated by thermal stresses experienced during high-temperature operations and subsequent cooling cycles. To address the thermal cycle durability and phase stability issues revealed in the traditional single ceramic layer material YSZ, a double-layer ceramic coating structure on pistons has been examined by three-dimensional simulation approach. When the thickness of the thermal barrier coating (comprising 0.1 mm + 0.3 mm) is held constant, the conventional YSZ material is chosen as the ceramic substrate. Through numerical calculations, the influence rules of various ceramic top layer materials are analyzed. It is discovered that the thermal insulation effect of the LCO-YSZ double-layer ceramic layer coating piston is superior. On this basis, the influence of the thickness of the ceramic top layer on the temperature field is investigated. The results indicate that the temperature of the piston substrate decreases as the thickness of the top layer increases, and the temperature of the piston substrate drops approximately 2 °C with an increase of 0.05 mm in thickness.

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来源期刊

Case Studies in Thermal Engineering Chemical Engineering-Fluid Flow and Transfer Processes

CiteScore

8.60

自引率

11.80%

发文量

812

审稿时长

76 days

期刊介绍： Case Studies in Thermal Engineering provides a forum for the rapid publication of short, structured Case Studies in Thermal Engineering and related Short Communications. It provides an essential compendium of case studies for researchers and practitioners in the field of thermal engineering and others who are interested in aspects of thermal engineering cases that could affect other engineering processes. The journal not only publishes new and novel case studies, but also provides a forum for the publication of high quality descriptions of classic thermal engineering problems. The scope of the journal includes case studies of thermal engineering problems in components, devices and systems using existing experimental and numerical techniques in the areas of mechanical, aerospace, chemical, medical, thermal management for electronics, heat exchangers, regeneration, solar thermal energy, thermal storage, building energy conservation, and power generation. Case studies of thermal problems in other areas will also be considered.