⎯⎯⎯ 2024
    THE SIXTH
      CHINESE

        INTERNATIONAL
          TURBOMACHINERY
            CONFERENCE
                  ⎯⎯⎯ SANYA
第六届中国国际透平机械学术会暨展览会
稿件通知录用日期 2024年6月20日
提前注册截止日期 2024年7月9日之前
酒店预定截止日期 2024年7月9日之前
现场注册 2024年8月1日
会议日期 2024年8月2-4日,同期展览2-3日
主办单位 中国国际透平机械产业联盟
承办单位 沈鼓集团股份有限公司
联合承办单位 东方电气集团东方汽轮机有限公司
特别支持单位 杭州汽轮动力集团股份有限公司
成都成发科能动力工程有限公司
协办单位 哈尔滨工业大学
陕西省工程热物理学会
西华大学
哈尔滨工程大学南海研究院
合肥通用机械研究院有限公司(高端压缩机及系统技术全国重点实验室)
西安陕鼓动力股份有限公司
会务服务 上海锃屿工程技术服务有限公司
-大会报告演讲者-
-Guillermo Paniagua,Purdue University
-Dan Zhao,University of Canterbury,Fellow of the Academy of Royal Society of New Zealand(Academician) of Canterbury
-Matthias Meinke,RWTH Aachen University
-Luis San Andrés,Texas A&M University
-Xavier Ottavy,Laboratoire de Mécanique des Fluides et d'Acoustique Lyon
-Fausto P. Garcia Marquez,ETSI Industrial,Universidad de Castilla-La Mancha
-Luca d'Agostino,Pisa University
-Yannis hardalupas,Imperial College London
-Roque Corral,Universidad Politecnica de Madrid
-Daejong Kim,The University of Texas at Arlington
CITC2024新会场:绿色交通动力
会场组织者兼主席:林峰,集美大学
清华大学 张扬军教授
集美大学 林峰教授
624所 马存祥
武汉理工大学 袁成清教授
重庆江增船舶重工有限公司 霍文浩
上海交通大学 杨名洋教授
南京航空航天大学 粱凤丽教授
更多...
CITC2024新会场:气悬浮轴承产业发展
会场组织者兼主席:冯凯,湖南大学机械院执行院长、教授
湖南大学 冯凯 机械院执行院长、教授
珠海格力电器股份有限公司  陈玉辉
中车株洲电机有限公司  赵雪源    流体装备事业部总经理
中国商飞上飞院机械动力工程技术所  南国鹏  副所长
势加透博(成都)科技有限公司  马雷  副总经理
宙斯能源动力科技(大连)有限公司  徐方程  技术总监
东莞青锐科技有限公司  朱建军 技术总监
河北金士顿科技有限责任公司 张学智 总经理
华涧新能源科技(上海)有限公司 周磊 总经理
更多...
CITC2024新会场:燃烧
索建秦教授,西北工业大学
吴云教授,空军工程大学航空动力系统与等离子体技术全国重点实验室
邱朋华教授,哈尔滨工业大学
王兴建教授,清华大学 
张弛教授,北京航空航天大学
杨东副教授,南方科技大学
颜应文教授,南京航空航天大学
李磊, 北京航空航天大学 
莫妲研究员, 中国航发沈阳发动机研究所 
more...
-工业大会报告演讲人-
-张勇 副总裁,首席技术官,沈鼓集团股份有限公司 
-方宇 副总经理,东方电气集团东方汽轮机有限公司
-Prof.Marco Astolfi,Energy Department of Politecnico di Milano
-姜玉雁教授,北京理工大学机械与车辆学院
-徐海波,中海油研究总院
-隋永枫 副总工程师,先进动力研究院院长,杭州汽轮动力集团股份有限公司
-于跃平 副总工程师,教授级高工,合肥通用机械研究院有限公司
-逯广平 副总经理,成都成发科能动力工程有限公司
-冯永智 副总经理,哈电发电设备国家工程研究中心有限公司
-张俊龙 部长,西安陕鼓动力股份有限公司
-蒋浦宁 副总经理,上海汽轮机厂有限公司
-杨玉,西安热工研究院
-潘春雨 工程研究中心储能所副经理  哈尔滨汽轮机厂有限责任公司
-汤辉 经理,上海索辰信息科技股份有限公司
-王泽平副总经理,中密控股股份有限公司
kenote lecture
Speaker: Mehdi Vahdati
Paper ID: 2024 .......
Date: Aug 2, 2024
Time: later
Room: later
Data-Driven Modelling of instabilities in turbomachinery
Accurate evaluation of stall and flutter boundary is crucial in design of turbomachines. Aerodynamic and aeroelastic design turbomachines is conducted by simplified simulations and design rules resulting from years of experience; verification and certification are based on experimental testing and computational fluid dynamics (CFD) simulations. However, current designs have approached their limit in efficiency and noise, and to achieve significant improvements new design concepts are required. The rules for aerodynamic and aeroelastic stability do not exist for these new design concepts, and hence, the role of simulations is now more relevant than ever as engine/rig test are very expensive especially in case of failure.
The increase in computing power has enabled the use large scale CFD models, but large scale CFD computations require a significant amount of computational time and cannot be used during design. Moreover, CFD methods require the modelling of turbulence which can be a key driver for accurate modelling of instabilities. In the past few years, there has been a fruitful increase in the use of Machine Learning (ML) approaches toward forecasting unsteady turbulent fluid flows. However, the ML models which are created solely from data (referred to as ‘black-box’ models) are not suitable for stall prediction due to amount of data required for training such models to a satisfactory accuracy level. Due to shortcomings of black-box models for complex science and engineering problems, there is a growing movement towards methodologies that integrate traditional physics-based models with machine learning (ML) techniques. In this presentation the application of such an approach for evaluating the stall and flutter boundary is explored and following areas are explored:
• Turbulence modelling
• Flutter and stall  predictions
kenote lecture
Speaker: Xavier Ottavy
Paper ID: 2024 *******..
Date: Aug 2, 2024
Time: later
Room: later
Aerodynamic and Aeroelastic Investigation of a Composite UHBR Fan
Modern low-speed Ultra-High Bypass Ratio (UHBR) fans predominantly have shorter intake lengths and employ flexible, lightweight, composite blades. These changes promote the evolution of different types of instabilities with multi-physical interactions, such as convective non-synchronous vibration (NSV). To enable further technological advancements, experimental benchmark data on representative geometries is required. Within this context, the test-case ECL5, a representative composite fan stage for UHBR engines, has been designed and tested experimentally on the facility ECL-B3 at Ecole Centrale de Lyon (ECL), with the support of the European project CATANA and the industrial SAFRAN Aircraft Engines. Numerical simulations and experimental results are in very good agreement for the stable operating range. In contrast, instability mechanisms are more complex than predicted by the employed numerical methods. Through the application of synchronized multi-physical instrumentation, the involved fluid-structure interaction is resolved. A detailed presentation of the test-bench and the experimental methodologies are presented together with the last finding about the behaviour close to the stability limit, focusing on the non-synchronous vibrations. Keywords: UHBR fan, aerodynamic performance, instability mechanisms, nonsynchronous vibration
kenote lecture
Speaker: Luis San Andrés
Organization: Texas A&M University<
Paper ID: 2024 *******..
Date: Aug 2, 2024
Time: later
Room: later
Squeeze Film Dampers For Aircraft Engines ENGINEERING MODELS & EXPERIMENTAL VERIFICATION
Squeeze Film Dampers (SFDs) are effective means to ameliorate rotor vibration amplitudes and to suppress instabilities in rotor-bearing systems. A SFD is not an off-the-shelf mechanical element but tailored to a particular rotor-bearing system as its design must satisfy a desired damping ratio; if too low, the damper is ineffective, whereas if damping is too large, the SFD may lock thus aggravating the system amplitude response. The aircraft industry demands well-engineered SFDs with a low footprint to reduce cost, maintenance, weight, and space while pushing for higher operating shaft speeds to increase power output. Modern air breathing gas turbine engines implement ultra-short length SFDs (L/D ≤ 0.2) to satisfy stringent weight and space demands with low parts count. Despite the myriad of analyses and experimental results in the literature, there is little effort to assess the dynamic forced performance of sealed ends SFDs. The lecture reviews the experimental record and prediction model validations for damping and inertia force coefficients of SFDs sealed with piston ring or orings, and operating over a wide range of conditions. The issue of air ingestion and entrapment is thoroughly discussed along with its effect on the damping and inertia coefficients.
kenote lecture
Organization: Imperial College London
Paper ID: 2024 *******..
Date: Aug 2, 2024
Time: later
Room: later
Decarbonized Combustion: Research Needs for Zero Pollution
Climate change is the biggest challenge that our society faces. To deliver the required reduction of carbon emissions, a smooth transition is needed from the existing infrastructure to a new approach that is yet to be agreed at an international level. Consequently, combustion technologies are expected to remain important during the development of new infrastructure over the next 30 years. However, combustion technologies must be able to deliver zero pollution, which include carbon dioxide, Unburned Hydrocarbons, NOx and particulates and other substances, specific to different industrial processes. The talk will identify and review different combustion technologies that can deliver net zero carbon emissions and overall zero pollution within short and medium timescales, which include: 1.Hydrogen and its vectors (e.g. Ammonia) 2.Supercritical CO2 3.Solar or e-fuels 4.Metal nanoparticle fuel The relevance of these approaches to aviation, land and marine transport and power generation will be considered. The scientific challenges that future research must address to deliver these combustion technologies will be presented.
kenote lecture
Organization:The University of Texas at Arlington
Paper ID: 2024 *******..
Date: Aug 2, 2024
Time: later
Room: later
Progress in Modeling and Experimental Characterization of Thrust Foil Bearings for Oil Free Turbomachinery
Foil bearing is one of the air/gas-lubricated hydrodynamic (or aerodynamic) bearings that do not require an auxiliary oil lubrication system. The bearing surface is typically made of thin metallic foil and is supported by a compliant structure providing structural stiffness and damping to the bearing. The most popular compliant structure is a corrugated metal, the bump foil. Foil bearing is a widely used oil-free bearing technology along with active magnetic bearings. In contrast to the magnetic bearing, foil bearings work at extremely high temperatures, up to 650oC and cryogenic temperatures, if the lubricating gas media has proper viscosity. In recent years, foil bearings have found use in many industrial applications where oil-free operation is advantageous, such as gas turbine generators, turbo blowers, and refrigeration compressors. The bearing load capacity is typically presented in terms of the specific load capacity (SLC), which is load capacity divided by the bearing projection area (shaft diameter times bearing length). Conventional foil bearings have sufficient SLC (100~200kPa) at high speeds and for intended applications. However, at low-speed operations such as startup and shutdown, the load capacity can be inadequate, especially for large-scale turbomachines, due to the heavy weight of the rotor. Hybridization with other load-supporting mechanisms is one way to improve the load capacity of the foil bearing. In hybrid foil bearing (HFB), externally pressurized air/gas is injected into the clearance of the bearing to levitate the shaft. The concept of hybridization has been applied to both radial and axial foil bearings. This presentation provides recent progress in analytical models and experimental characterization of thrust foil bearings developed and tested at TESLAB including hybrid trust foil bearings.
kenote lecture
Speaker:张扬军 车辆与运载学院教授、飞行汽车动力研究中心主任
Organization:清华大学
Paper ID: 2024 *******..
Date: Aug 2, 2024
Time: later
Room: later
飞行汽车开启智能空中交通新时代
飞行汽车是指面向智慧立体交通的载运工具,主要包括电动垂直起降飞行器eVTOL和陆空两栖汽车两大类,。飞行汽车发展主要面临载荷航程、智能驾驶和适航安全三大瓶颈问题,需要突破动力、平台和交通三大核心技术。飞行汽车将开启包括城市空中交通和城乡空中交通的智能空中交通(IAM)新时代,是低空经济发展的主要载体和战略方向。智能空中交通与智能地面交通将融合发展为智慧立体交通,是新能源、人工智能、大数据和5G通讯等新技术应用的主要载体和场景,对经济社会具有全局带动和重大引领作用。
kenote lecture
Speaker: Luca d’Agostino 
Organization: Civil and Industrial Engineering Department, University of Pisa, Pisa, Italy. 
Paper ID: 2024 *******..
Date: Aug 2, 2024
Time: later
Room: later
Identification of Backflow Vortex Instability in Rocket Engine Inducers
Bayesian estimation is applied to the analysis of backflow vortex instabilities in typical three- and four-bladed liquid propellant rocket (LPR) engine inducers. The flow in the impeller eye is modeled as a set of equally intense and evenly spaced 2D axial vortices, located at the same radial distance from the axis and rotating at a fraction of the impeller speed. The circle theorem and the Bernoulli’s equation are used to predict the flow pressure in terms of the vortex number, intensity, rotational speed, and radial position. The theoretical spectra so obtained are frequency broadened to mimic the dispersion of the experimental data and parametrically fitted to the measured pressure spectra by maximum likelihood estimation with equal and independent Gaussian errors. The method is applied to three inducers, tested in water at room temperature and different loads and cavitation conditions. It successfully characterizes backflow instabilities using the signals of a single pressure transducer flush-mounted on the casing of the impeller eye, effectively by-passing the aliasing and data acquisition/reduction complexities of traditional multiple-sensor cross-correlation methods. The identification returns the estimates of the model parameters and their standard errors, providing the information necessary for assessing the accuracy and statistical significance of the results. The flowrate is found to be the major factor affecting the backflow vortex instability, which, on the other hand, is rather insensitive to the occurrence of cavitation. The results are consistent with the data reported in the literature, as well as with those generated by the auxiliary models specifically developed for initializing the maximum likelihood searches and supporting the identification procedure.
kenote lecture
Speaker: Prof. Fausto Pedro García Márquez 
Organization: ETSI Industrial,Universidad de Castilla-La Mancha 
Paper ID: 2024 *******..
Date: Aug 2, 2024
Time: later
Room: later
Acelerating Energy Innovation Using AI
To-date, most of the energy sector's transition efforts have focused on hardware: new low-carbon infrastructure that will replace legacy carbon-intensive systems. Relatively little effort and investment has focused on another critical tool for the transition: next-generation digital technologies, in particular artificial intelligence (AI). These powerful technologies can be adopted more quickly at larger scales than new hardware solutions, and can become an essential enabler for the energy transition. AI is already proving its value to the energy transition in multiple domains, driving measurable improvements in renewable energy forecasting, grid operations and optimization, coordination of distributed energy assets and demand-side management, and materials innovation and discovery. AI holds far greater potential to accelerate the global energy transition, but it will only be realized if there is greater AI innovation, adoption and collaboration across the industry.
More information about speaker, please check the link   https://blog.uclm.es/faustopedrogarcia
kenote lecture
Speaker: Prof. Dan Zhao
Organization: Royal Society of New Zealand  
Paper ID: 2024 *******..
Date: Aug 2, 2024
Time: later
Room: later
Gas turbine combustion instability generation mechanisms and practical control approaches
In engine combustion systems such as gas turbines and ramjets, pressure fluctuations are always present, even during normal operation. One of design prerequisites for the engine combustors is stable operation, since large-amplitude self-sustained pressure fluctuations (also known as combustion instability) have the potential to cause serious structural damage and catastrophic engine failure. The typical generation mechanisms of such undesirable combustion instability are discussed and highlighted. To dampen pressure fluctuations and to reduce noise, acoustic dampers are widely applied as a passive control means to stabilize combustion/engine systems. However, they cannot respond to the dynamic changes of operating conditions and tend to be effective over certain narrow range of frequencies. To maintain their optimum damping performance over a broad frequency range, extensive researches have been conducted during the past four decades. The present work is to summarize the status, challenges and progress of implementing such acoustic dampers on engine systems. The damping effect and mechanism of various acoustic dampers, such as Helmholtz resonators, perforated liners, baffles, half- and quarter-wave tube are introduced first. A summary of numerical, experimental and theoretical studies are then presented to review the progress made so far. Finally, as an alternative means, ‘tunable acoustic dampers’ are discussed. Potential, challenges and issues associated with the dampers practical implementation are highlighted.
More information about speaker, please check the link   https://blog.uclm.es/faustopedrogarcia
kenote lecture
Speaker: Matthias Meinke;
Organization: Institute of Aerodynamics RWTH Aachen University
Paper ID: 2024 *******..
Date: Aug 2, 2024
Time: later
Room: later
Analysis of hot gas ingestion into the wheel space of an axial gas turbine stage
To prevent hot air from the main annulus flow to enter the rim seal gap between the rotor and the stator of an axial flow turbine, sealing air is introduced into the wheel space cavity. The amount of sealing air needs to be minimized to maintain a high thermodynamic turbine efficiency, which can be achieved by optimizing the rim seal design. This, however, requires a profound understanding of the flow around the rim seal and in the wheel space, where an interplay of complex flow phenomena occurs. In this paper, the flow in a 1.5-stage axial flow turbine with 16 vanes and 32 blades is investigated by highly resolved large-eddy simulations (LES) with special focus on the rim seal area and the wheel space. An analysis of the flow fields inside the rim seal gap via Fast Fourier Transformation shows that various frequencies are excited. The flow structures connected to distinct excited frequencies are extracted from the flow field using Dynamic Mode Decomposition for a more detailed investigation of the intricate unsteady flow structures in turbine rim seals.
kenote lecture
Speaker: Guillermo Paniagua
Organization: Purdue University  
Paper ID: 2024 *******..
Date: Aug 2, 2024
Time: later
Room: later
Creativity on turbine designs towards compact clean thermal power units
The presentation will explore recent developments in turbine research for supercritical CO2 cycles, hydrogen production, and the design of new turbines for rotating detonation engines. This talk will explore the intricacies of designing turbine stages for various relevant applications, including pulsating high-speed exhaust flows, separated flows, and the interaction with secondary flows. The keynote will also discuss the progress of measurement techniques required to investigate aerothermal precisely. The research highlights critical findings in the performance of subsonic, transonic, and supersonic inlet blade rows and illustrates flow dynamics within various turbine design architectures, including axial, radial, mixed-flow bladed, and bladeless concepts.By examining the flow interactions and startability of turbine passages, as well as the impact of shock-wave interactions on turbine losses, Paniagua's team provides valuable insights into optimizing turbine designs for efficiency and compactness. The research presented in this keynote will stimulate new paths toward innovative turbine designs to meet the demands of modern energy systems for a sustainable future.
kenote lecture
Speaker: Roque Corral
Organization: School of Aeronautics and Space
Universidad Politecnica de Madrid;
Paper ID: 2024 *******..
Date: Aug 2, 2024
Time: later
Room: later
Closing TRL3-TRL4 R&T Aerodynamic Gaps Using High-Fidelity Simulations
A hierarchy of experiments is usually planned to cover different
aerodynamic design aspects of turbomachinery components. The aerodynamic
efficiency of compressors and turbines is paramount for aero-engine
performance. Therefore, large and costly aerodynamic testing campaigns
are devoted to demonstrating critical aerodynamic concepts. However, the
progress in computing capabilities and numerical algorithms has made it
possible to test concepts in numerical rather than experimental wind
tunnels. For many years, a strong, sometimes irrational opposition has
existed to delay the inevitable. The lecture will discuss past and
recent industrial practices together with their limitations. Strategies,
advantages, and disadvantages of different approaches, as well as a word
of caution, will be discussed during the presentation.