Research Fields
In the research field of wind energy utilization, investigation has been carried out centered around five key aspects:
■ 100 m-blades design and green manufacturing technology
■ Effectiveness evaluation system and Performance improvements technology for wind turbine blades in service
■ High efficiency, low cost and long life of the overall technical solutions to wind power heating and heat storage system
■ Integrated utilization design of wind and marine energy with independent intellectual property rights
In the research field of aero engine, investigation has been carried out centered around five key aspects:
■ General engine design technology
■ New type compressor
■ Counter-rotating turbine
■ Short annular combustor
■ Micro power system
Major Projects
In 2016, the Center undertook 28 projects and received 14 new research grants, which included 1 national key research and development plan, 1 project from Beijing Science and Technology Commission, 1 special fund for strategic pilot technology from Chinese Academy of Sciences, 1 defense scientific innovative fund from Chinese Academy of Sciences,1 youth science fund,1project supported by the Youth Innovation Association, 1 project supported by the Institute Innovation Fund and 7 co-operative businesses projects. The research funding amounts to CNY 21.4 million this year.
Major Achievements in 2016
In the research field of wind energy, the Center has successfully carried out the field test of the sectional blade in the National Energy Wind Power Grid-connect System R&D (experimental) Center (Zhangbei experimental base). The Center has made experiments on structural collapse of a large composite wind turbine blade under combined bending and torsion, which reveals the strong coupling interaction between three basic nonlinear phenomena of solid mechanics in the process of large-scale blade structure failure. The Center has studied the effects of typical sensor signals on the control effect and the related mechanism in the intelligent blade system. The Center has carried out the comparison and analysis of the control effect of the intelligent blade system under the influence of wake flow. The Center has proposed the wind power heat pump system with independent intellectual property rights, and explored the influence law of wind power output on the running characteristics of wind energy heat pump system and the best operation mode, and solved the problem of soil suction and exhaust insulation imbalance. In the -20 ℃ environment, heat pump unit hot water outlet temperature is 65 ℃, and COP is up to 2.5 or more.
In the research field of aero engine, the key technology development and identification have been carried out which aims at the prototype of a new type aero engine. (1) In the aspect of engine performance, a novel combined cycle scheme that significantly enhances the engine specific impulse and reduces the turbine stage numbers has been presented, a fluid-structure coupling design process for the new concept engine has been established, and a component matching mechanism with multiple adjustable variables in the full flight envelop has been obtained. (2) In the aspect of aero-engine overall structure, the integrated technology of the support and dynamic design for counter rotating double rotor system and the rotor dynamic optimization technology based on critical parameter sensitivity have been developed. The axial force optimal design method based on adjusting sealing structure size is also formed. The internal relation between dimension of seal structural and axial force, and the internal relation between assemble form and thermal stress has been revealed. (3) In the aspect of compressor, the aerodynamic/structural design and aeroelastic optimization of new type compressor have been completed successfully. The new segmented design and optimization method for blade have been established. The starting method of supersonic rotor, coupling with the geometric throat optimization and air bleeding out of casing near blade tip, has been proposed to improve the overall performance of the new type compressor. The new type compressor tests below 85%-100% of the matching rotational speed have been completed to reveal the working characteristics at off-design conditions.(4) In the aspect of turbine, the interaction mechanism between wake and trailing shock wave in a highly loaded turbine has been revealed. The tip clearance variation of a transonic turbine at off-design conditions has been illuminated, and the tip clearance active control method of the turbine has been developed. The aerodynamic design rules of multistage counter-rotating turbine with fuel-rich fluid have been proposed. The aerodynamic design method and the internal flow mechanism of counter-rotating turbines have been verified with the experimental results.(5)In the aspect of combustor, the plan design and the numerical performance analysis of short-annular combustor have been completed, the experiments of combustion performance of 90°fan-shape and the annular combustors have been completed, the experiment of atomization performance of fuel nozzle has been completed. The LBO prediction method which decreases the predicting error from ±30 to ±7 has been proposed.
Team Building
In the aspect of research team construction, the Center recruited 4 new staff this year. Currently there are 35 faculty members, 16 with senior professional title and 26 with PhD degrees.
In the aspect of graduate education, 1 doctoral student and 5 postgraduates graduated this year. Currently there are 23 graduate students including 13 doctoral students and 10 postgraduates. Besides, there are 6 joint training postgraduates.
Technology Transfer
The National Wind Energy Science & Technology Co. Ltd has been established by the Center and the government of Tianjin.
Patents and Paper
In 2016, the Center had 35 scientific publications, including 14 papers indexed by SCI and 12 by EI. 10 technical reports have been submitted. 9 oral presentations and reports were given in international conferences. 23 patents proposals have been submitted and 18 patents authorized.
International Cooperation and Exchanges
Dr. Chen Xiao attended the conference of Torque 2016 which focused on the most recent advances in the field of wind energy science and presented one paper. Dr. Zhang Mingming and Dr. Wu Guangxing attended the ASME IMECE2016 international conference and presented respectively. Dr. Zhang Mingming attended the7th Renewable Energy Workshop between China and Thailand and presented one paper. Dr. ZHAO Qingjun attended the aviation 2016 forum of AIAA in US and presented one paper. Dr. ZHAO Wei and Dr. XU Xiao attended the ASME Turbo Expro 2016 in Korea and presented papers respectively. Dr. ZHOU Xiaoyong and Dr. SUI Xiuming attended the Asian Joint Conference on Propulsion and Power in Japan and presented papers respectively.
Dean: Xu Jianzhong，Tel: 86-10-82543036，E-mail: xjz@iet.cn
Deputy Dean: Yang Ke，Tel: 86-10-82543038，E-mail: yangke@iet.cn
Zhao Qingjun，Tel: 86-10-82543047，E-mail: zhaoqingjun@iet.cn
The field test of the sectional blade
The supersonic cascade experiment platform
Models and controller of aeroemgine telemetry instrument
The blowdown compressor and turbine experiment platform
