Journal ArticleDOI
Sealing in Turbomachinery
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In this article, the authors present an overview of turbomachinery sealing to control clearances, including characteristics of gas and steam turbine sealing applications and environments, benefits of sealing, types of standard static and dynamics seals, advanced seal designs, as well as life and limitations issues.Abstract:
Clearance control is of paramount importance to turbomachinery designers and is required to meet today's aggressive power output, efficiency, and operational life goals. Excessive clearances lead to losses in cycle efficiency, flow instabilities, and hot gas ingestion into disk cavities. Insufficient clearances limit coolant flows and cause interface rubbing, overheating downstream components and damaging interfaces, thus limiting component life. Designers have put renewed attention on clearance control, as it is often the most cost effective method to enhance system performance. Advanced concepts and proper material selection continue to play important roles in maintaining interface clearances to enable the system to meet design goals. This work presents an overview of turbomachinery sealing to control clearances. Areas covered include: characteristics of gas and steam turbine sealing applications and environments, benefits of sealing, types of standard static and dynamics seals, advanced seal designs, as well as life and limitations issues.read more
Citations
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Journal ArticleDOI
Bioinspired engineering of honeycomb structure – Using nature to inspire human innovation
Qian-Cheng Zhang,Xiaohu Yang,Peng Li,Guoyou Huang,Shangsheng Feng,Cheng Shen,Bin Han,Xiaohui Zhang,Feng Jin,Feng Xu,Tian Jian Lu +10 more
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Prediction of Ingestion Through Turbine Rim Seals—Part II: Externally Induced and Combined Ingress
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Rotary Bed Reactor for Chemical-Looping Combustion with Carbon Capture. Part 1: Reactor Design and Model Development
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Multiple Frequencies Elliptical Whirling Orbit Model and Transient RANS Solution Approach to Rotordynamic Coefficients of Annual Gas Seals Prediction
Zhigang Li,Jun Li,Xin Yan +2 more
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Brush seals and labyrinth seals in gas turbine applications
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References
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Book
Fluid dynamics and heat transfer of turbomachinery
TL;DR: In this paper, the dynamique des : fluides, transfert de chaleur, turbomachines, aerodynamique, thermodynamique Reference Record created on 2005-11-18, modified on 2016-08-08
Book
Rotordynamics of Turbomachinery
TL;DR: In this paper, the authors present rotordynamic considerations in Turbomachinery design, including critical speeds and response to imbalance, as well as rotor balancing, bearingings and seals.
Journal ArticleDOI
Recommendations for Achieving Accurate Numerical Simulation of Tip Clearance Flows in Transonic Compressor Rotors
Dale E. Van Zante,Anthony J. Strazisar,Jerry R. Wood,Michael D. Hathaway,Theodore H. Okiishi +4 more
TL;DR: In this paper, the authors compare measured tip clearance flow details (e.g., trajectory and radial extent) with corresponding data obtained from a numerical simulation and make recommendations for achieving accurate numerical simulation of tip clearance flows.
Turbine Engine Clearance Control Systems: Current Practices and Future Directions
TL;DR: In this article, the cause and effect of gas turbine blade tip seal wear and current clearance control practices are reviewed. And the approaches under investigation at GRC are presented, as well as the results of the investigation.