analysis of turbines 中文意思是什麼
analysis of turbines
解釋
渦輪計算-
Presents the model proposed for analyzing the vibration characteristics of shrouded blades and their calculation method by employing a wave propagation theory and modal synthesis technology coupled with a finite element method from the view point it is possible not only to conduct frequency modulation of the shrouded blades of a gas turbine, but also to utilize the friction effects between them to dissipate energy, thereby attaining the aim of vibration alleviation, as shrouded blades have been widely used in the design of high - speed turbomachinery, such as modern gas turbines and steam turbines, and with the shrouded blades forming an integral whole in a centrifugal force field, the vibration characteristics of the whole ring of blades are different from those of a single isolated blade, and this makes it essential to take into account the integral effect of blade shrouds, concludes from the calculation examples and engineering application that the above approach is valid and correct along with the possibility of considerably reducing the scale of calculation and analysis, and points out it is necessary to take into consideration the coupled effect of the whole ring of blades while the dynamic characteristics of shrouded blades is being analysed
帶冠葉片不但能調頻，還可以利用葉冠之間的摩擦效應來耗散能量，達到減振的目的.帶冠葉片在離心力場中形成一整體，其整圈葉片振動特性不同於單個孤立葉片，需考慮葉冠的整體效應.利用帶冠葉片系統的循環對稱性，提出了採用波傳播理論和模態綜合技術，結合有限元方法研究燃氣輪機帶冠葉片振動特性的分析模型和計算方法.算例和工程應用證明了該方法是效性的、正確的，並可以大大降低計算分析規模.研究表明帶冠葉片動力特性分析時必須考慮整圈葉片的耦合效應 -
A hydrodynamic optimal method to enhance the energy conversion coefficient of the vertical - axis variable - pitch turbine is presented in this paper based on the analysis of the existing mathematical models, on the computational methods for predicting the hydrodynamic performance of turbines and on the available experimental results. by applying mathematical optimal theory, a mathematical model for optimizing the hydrodynamic attack angle of the blades of turbines is formulated and some numerical results are obtained as well
本文在總結和研究豎軸可調角直葉水輪機水動力性能計算的現有數學模型，計算方法和實驗結果的基礎上，運用最優化理論，給出了改善和提高該種水輪機能量利用率的一種優化方法，建立了數學模型，並得到了計算結果。 -
Technical and economical analysis on inlet air cooling of gas turbines
燃氣輪機進氣冷卻的技術經濟分析 -
Directing against the problems of shortage of electric power during summer and winter seasons in the region of nanjing city, a scheme of heat, electricity and cool co - generation by using natural gas has been put forward, and techno - economic analysis for combined schemes of four kinds of different gas turbines with the refrigerating machine in a common residential quater being carried out, the suitability as well as strong and weak points of each scheme being expounded
摘要針對南京地區冬夏季用電緊張問題，提出住宅小區採用天然氣熱電冷三聯產的方案，並就某普通住宅小區4種不同燃氣輪機和製冷機組的組合方案進行技術經濟分析，闡明各方案的適用性和優缺點。 -
Characteristic calculation and analysis of gas turbines during the time of burning lowcalorific value coal gas
燒低熱值煤氣時燃氣輪機特性計算與分析
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