Results 31 to 40 of about 5,041 (207)
, 2016 TutorialTutorial 1: The power and efficiency characteristics of a gas turbine are the result of a complex interaction of different turbo machines and a combustion system.
Brun, Klaus, Kurz, Rainer
core +1 more source
Scientific ReportsLiquefied natural gas (LNG) pumps are prone to cavitation under cryogenic operation. This study establishes a numerical model to investigate the influence of an inducer and its guide vanes on the cavitation and pressure fluctuation characteristics of a ...
Xiaobao Zhang +5 more
doaj +1 more source
Transient Flow-Induced Stress Investigation on a Prototype Reversible Pump–Turbine Runner
EnergiesPump–turbine units with high heads are subjected to strong pressure pulsations from the unsteady transient flow in fluid channels, which can produce severe vibrations and high stresses on the pump–turbine structural components.
Dehao Zhang +5 more
doaj +1 more source
International Journal of Rotating Machinery, 2018 In this study, a counter-rotating-type pump-turbine unit was optimized to improve the pump and turbine mode efficiencies simultaneously. Numerical analysis was carried out by solving three-dimensional Reynolds-averaged Navier–Stokes equations using the ...
Jin-Woo Kim +5 more
doaj +1 more source
Waveguide Photoactuators: Materials, Fabrication, and Applications
Advanced Robotics Research, EarlyView.Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi +4 more
wiley +1 more source
Vertical Turbine Pump Reliability Improvement [PDF]
, 2018 Case StudyThe subject pump was designed and installed when pipeline pressure was estimated high based on a higher production volume. The selected multistage vertical turbine-pumps are generically prone to vibration issues due to its flexible shaft design.
Zhao, Yve
core
An integrated study for solving high vibration problem of a deep well turbine pump
, 2023 Mechanical vibrations are a common problem encountered in many machines, especially for vertical turbine pumps. These pumps are generally difficult to stiffen or damp, but the effective diagnosis must begin with an understanding of the underlying ...
El-Gazzar, Dalia M., Dalia M. El- Gazzar
core +1 more source
Scientific ReportsTransient changes in receiver heat are due to Direct Normal Irradiance (DNI) fluctuations, requiring operational strategies for receiver safety in cloudy weather.
Jing Nie +3 more
doaj +1 more source
Numerical Analysis on the Hydraulic Thrust and Dynamic Response Characteristics of a Turbine Pump
Energies, 2022 Pumps as turbines are widely used in the world, wherein the hydraulic thrust of a turbine pump is one of the key factors affecting the safe and stable operation of a unit.
Linghua Kong +10 more
doaj +1 more source
Causal‐Guided Ultra‐Long‐Term Time Series Forecasting Via Anticipated Covariates
Advanced Science, EarlyView.Often treated as unknown, information from the future remains underutilized.We demonstrate that in a coupled dynamical system, providing the future state of the effect enables accurate forecasting of the cause for a long timesteps. A time series forecasting paradigm that introduces anticipated covariates to represent such known future states is ...
Jintong Zhao +4 more
wiley +1 more source