International Journal of Gas Turbine, Propulsion and Power Systems最新文献

Influence of Microstructural Change on Crack Growth in Thermal Barrier Coating Subjected to Thermal Cycling under Temperature Gradient 温度梯度下热障涂层热循环过程中微观结构变化对裂纹扩展的影响

International Journal of Gas Turbine, Propulsion and Power Systems Pub Date : 2023-02-13 DOI: 10.38036/jgpp.14.1_1

R. Kitazawa, M. Okada, Takayuki Ozeki

引用次数: 0

Surrogate models for predicting transient change in temperature, stress and strain in gas turbine blade 燃气轮机叶片温度、应力和应变瞬态变化预测的替代模型

International Journal of Gas Turbine, Propulsion and Power Systems Pub Date : 2023-01-01 DOI: 10.38036/jgpp.14.2_1

E. Sakai, Toshihiko Takahashi

引用次数: 0

Crack Growth in Thermal Barrier Coating Subjected to Thermal Cycling under Temperature Gradient 温度梯度下热循环对热障涂层裂纹扩展的影响

International Journal of Gas Turbine, Propulsion and Power Systems Pub Date : 2022-11-09 DOI: 10.38036/jgpp.13.3_7

M. Okada, R. Kitazawa, Toshihiko Takahashi, Takayuki Ozeki

引用次数: 1

Parametric analysis of interfacial friction factor for liquid film dynamics sheared by turbulent gas flow 湍流气体剪切液膜动力学界面摩擦因数的参数分析

International Journal of Gas Turbine, Propulsion and Power Systems Pub Date : 2022-11-09 DOI: 10.38036/jgpp.13.3_1

T. Inoue, Y. Kamada, C. Inoue, Zhenying Wang

引用次数: 0

Flexible Fuel Operation of a Dry-Low-NOx Micromix Combustor with Variable Hydrogen Methane Mixtures 干式低氮氧化物微混合燃烧器可变氢-甲烷混合物的灵活燃料运行

International Journal of Gas Turbine, Propulsion and Power Systems Pub Date : 2022-01-01 DOI: 10.38036/jgpp.13.2_1

H. Funke, N. Beckmann

引用次数: 1

Large-eddy simulation of a three-feed non-premixed flame for an oxy-fuel gas turbine burner 全氧燃气轮机燃烧器三进气非预混火焰的大涡模拟

International Journal of Gas Turbine, Propulsion and Power Systems Pub Date : 2022-01-01 DOI: 10.38036/jgpp.13.1_1

Panlong Yu, T. Nishiie, T. Kitagawa, Hiroaki Watanabe

{"title":"Large-eddy simulation of a three-feed non-premixed flame for an oxy-fuel gas turbine burner","authors":"Panlong Yu, T. Nishiie, T. Kitagawa, Hiroaki Watanabe","doi":"10.38036/jgpp.13.1_1","DOIUrl":"https://doi.org/10.38036/jgpp.13.1_1","url":null,"abstract":"The development of turbulent combustion models for a three-feed non-premixed flame is essential for the research of gas-turbine in the oxy-fuel integrated coal gasification combined cycle (IGCC) system. The quasi-two-dimensional flamelet models are considered effective and accurate substitutes for the two-dimensional flamelet model, however, there are still many aspects worth further investigations in terms of each dimension in the flamelet library. The considerations of heat loss, the presumed probability density function (PDF), and the resolution of the diluent fraction in large-eddy simulation (LES) should be attached importance to. In this paper, heat loss, diluent fraction PDF, and resolution of the diluent fraction have been investigated. It has been shown that the current heat loss model in the flamelet equation can correctly interpret the reactions which are facilitated by high temperature. The beta-PDF used for diluent fraction results in a lower temperature in the flame zone than that of the delta-PDF as the diluent fraction fluctuation cannot be overlooked. And also, coarse resolution in terms of the diluent fraction gives interpolation error and shoud be paid attention to.","PeriodicalId":38948,"journal":{"name":"International Journal of Gas Turbine, Propulsion and Power Systems","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70080444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Prediction of CO emissions in turbulent super lean premixed combustion under pressurized conditions using an LES/non-adiabatic FGM approach 利用LES/非绝热FGM方法预测加压条件下湍流超贫预混燃烧CO排放

International Journal of Gas Turbine, Propulsion and Power Systems Pub Date : 2021-01-01 DOI: 10.38036/jgpp.12.3_1

K. Yunoki, T. Nishiie, R. Kurose

引用次数: 1

Multi-Objective Optimization of Non-Axisymmetric Contoured Endwall for Axial Turbines 轴流式水轮机非轴对称型端壁多目标优化

International Journal of Gas Turbine, Propulsion and Power Systems Pub Date : 2021-01-01 DOI: 10.38036/JGPP.12.1_1

Pingting Chen, Xueying Li, Hongde Jiang

{"title":"Multi-Objective Optimization of Non-Axisymmetric Contoured Endwall for Axial Turbines","authors":"Pingting Chen, Xueying Li, Hongde Jiang","doi":"10.38036/JGPP.12.1_1","DOIUrl":"https://doi.org/10.38036/JGPP.12.1_1","url":null,"abstract":"Non-axisymmetric contoured endwall can reduce aerodynamic loss in axial turbine if the endwall shape is well designed. Meanwhile, contouring of the endwall can change the value of the total heat flux through the endwall, mainly by changing the distribution of heat transfer coefficient and the endwall area. In this study, several optimized non-axisymmetric contoured endwall shapes are found in an annular cascade passage by a multi-objective optimization process to achieve both improved aerodynamic performance in the passage and more beneficial heat transfer characteristics on the endwall. The optimized contoured endwall designs were found and they are all with sunken area in the middle of the passage and risen area in the aft part of the passage near the suction side. In addition, the case with better heat transfer performance features higher area-averaged heat transfer coefficient but with smaller total endwall area. contouring, as compared to the flat endwall. The total heat transfer was reduced by 2% with a 3.1% reduction in the averaged heat transfer coefficient value and a 1.3% increasing of endwall area value.","PeriodicalId":38948,"journal":{"name":"International Journal of Gas Turbine, Propulsion and Power Systems","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70080365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Experimental and Numerical Based Defect Detection in a Model Combustion Chamber through Machine Learning 基于机器学习的模型燃烧室缺陷检测实验与数值研究

International Journal of Gas Turbine, Propulsion and Power Systems Pub Date : 2021-01-01 DOI: 10.38036/jgpp.12.4_1

Henrik von der Haar, Panagiotis Ignatidis, F. Dinkelacker

引用次数: 1

Influence of Blade Vibration on Part-Span Rotating Stall 叶片振动对部分跨旋转失速的影响

International Journal of Gas Turbine, Propulsion and Power Systems Pub Date : 2020-12-21 DOI: 10.33737/jgpps/130873

F. Zhao, J. Dodds, M. Vahdati

{"title":"Influence of Blade Vibration on Part-Span Rotating Stall","authors":"F. Zhao, J. Dodds, M. Vahdati","doi":"10.33737/jgpps/130873","DOIUrl":"https://doi.org/10.33737/jgpps/130873","url":null,"abstract":"This paper presents the interaction between blade vibration and part-span rotating stall in a multi-stage high speed compressor. Unsteady aerodynamic and aeroelastic simulations were conducted using URANS CFD. Steady state computations showed short length scale disturbances formed local to the tip of a front stage rotor. Using a full annulus model, these disturbances were shown to coalesce into flow structures rotating around the annulus at approximately 76% of the shaft rotational speed. Natural evolution of the rotating stall did not result in a coherent spatial pattern. Sensitivity studies showed that operating point and tip clearance have significant impact on the developed state of rotating stall. Subsequent analyses carried out with prescribed rotor blade vibration showed a spatial ‘lock-in’ event where the circumferential order of the part-span rotating stall shifted to match that induced by the vibration mode. Moreover, in contrast to its natural form in the absence of vibration, the fully developed rotating stall showed a coherent stall signal. More importantly, it was found that numerical boundary conditions such as mixing plane and sliding planes can significantly influence the outcome of prediction.","PeriodicalId":38948,"journal":{"name":"International Journal of Gas Turbine, Propulsion and Power Systems","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69675653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1