Removal of condensates from wet steam flow in the last stages of steam turbines significantly promotes stage efficiency and prevents erosion of rotors. In this paper, homogeneous spontaneous condensation in transonic ...Removal of condensates from wet steam flow in the last stages of steam turbines significantly promotes stage efficiency and prevents erosion of rotors. In this paper, homogeneous spontaneous condensation in transonic steam flow in the 2-D rotor-tip section of a stage turbine is investigated. Calculated results agree with experimental data reasonably well. On the basis of the above work, a 2-D numerical simulation of wet steam flow in adjacent root sections of a complex steam turbine stage was carded out. Computational results were analyzed and provide insights into effective removal of humidity.展开更多
Propulsion of liquefied natural gas (LNG) ships is undergoing significant change. The traditional steam plant is losing favor because of its low cycle efficiency. Medium-speed diesel-electric and slow-speed diesel-mec...Propulsion of liquefied natural gas (LNG) ships is undergoing significant change. The traditional steam plant is losing favor because of its low cycle efficiency. Medium-speed diesel-electric and slow-speed diesel-mechanical drive ships are in service, and more are being built. Another attractive alternative is combined gas and steam turbine (COGAS) drive. This approach offers significant advantages over steam and diesel propulsion. This paper presents the case for the COGAS cycle.展开更多
美国首个地震预警应用程序上线The First Earthquake Warning Application in US Is Online近日,美国洛杉矶市长埃里克·加希蒂(Eric Garcetti)在市政厅举行的新闻发布会上宣布,'ShakeAlertLA'移动应用程序将正式上线。Shak...美国首个地震预警应用程序上线The First Earthquake Warning Application in US Is Online近日,美国洛杉矶市长埃里克·加希蒂(Eric Garcetti)在市政厅举行的新闻发布会上宣布,'ShakeAlertLA'移动应用程序将正式上线。ShakeAlertLA是美国首个公开发布的地震预警应用程序。这款应用利用美国地质勘探局(USGS)的地震传感器网络,将在地震开始前几秒钟向用户提供地震预警信息。展开更多
文摘Removal of condensates from wet steam flow in the last stages of steam turbines significantly promotes stage efficiency and prevents erosion of rotors. In this paper, homogeneous spontaneous condensation in transonic steam flow in the 2-D rotor-tip section of a stage turbine is investigated. Calculated results agree with experimental data reasonably well. On the basis of the above work, a 2-D numerical simulation of wet steam flow in adjacent root sections of a complex steam turbine stage was carded out. Computational results were analyzed and provide insights into effective removal of humidity.
文摘Propulsion of liquefied natural gas (LNG) ships is undergoing significant change. The traditional steam plant is losing favor because of its low cycle efficiency. Medium-speed diesel-electric and slow-speed diesel-mechanical drive ships are in service, and more are being built. Another attractive alternative is combined gas and steam turbine (COGAS) drive. This approach offers significant advantages over steam and diesel propulsion. This paper presents the case for the COGAS cycle.
文摘美国首个地震预警应用程序上线The First Earthquake Warning Application in US Is Online近日,美国洛杉矶市长埃里克·加希蒂(Eric Garcetti)在市政厅举行的新闻发布会上宣布,'ShakeAlertLA'移动应用程序将正式上线。ShakeAlertLA是美国首个公开发布的地震预警应用程序。这款应用利用美国地质勘探局(USGS)的地震传感器网络,将在地震开始前几秒钟向用户提供地震预警信息。
