Results 31 to 40 of about 9,919 (312)

The Design Method of Axial Flow Runners Focusing on Axial Flow Velocity Uniformization and Its Application to an Ultra-Small Axial Flow Hydraulic Turbine

International Journal of Rotating Machinery, 2016
We proposed a portable and ultra-small axial flow hydraulic turbine that can generate electric power comparatively easily using the low head of open channels such as existing pipe conduits or small rivers.
Yasuyuki Nishi, Yutaka Kobayashi, Terumi Inagaki, Norio Kikuchi   +3 more
doaj   +1 more source

Numerical Investigation of the Hub-Seal Mass Flow Rate Effect on the Axial Turbine Stage Efficiency [PDF]

EPJ Web of Conferences, 2019
The contribution deals with numerical simulation of compressible flow through the axial turbine stage equipped with the hub-seal. The current flowing from the hub-seal has a major impact on the secondary flow in the hub-region of the blade span.
Straka Petr
doaj   +1 more source

Comparison of Partial Admission Axial and Radial Inflow Turbines for Underwater S-CO2 Power Cycle System

水下无人系统学报
The reasonable application of supercritical carbon dioxide(S-CO2) power cycle systems to unmanned undersea vehicles(UUVs) can help address the problem of low efficiency for the existing UUV steam power cycle systems, especially for small-power ...
Hanwei WANG, Xiaopeng JIANG, Kai LUO, Jianan ZHANG, Jianjun DANG, Kan QIN   +5 more
doaj   +1 more source

Direct-Drive Conical-Rotor Permanent Magnet Synchronous Generator for Turbo-Expander, Accounting for Adaptive Equilibrium of Axial Force

IEEE Access, 2018
The permanent magnet synchronous generator (PMSG) has been widely employed in high-speed direct-drive turbo-expander for distributed energy generation.
Jiaobao Wang, Shoudao Huang, Chao Guo, Haokun Wu, Yaojing Feng   +4 more
doaj   +1 more source

Characterization of Aluminized Layers on Inconel‐738 Alloy: Microstructure, Modeling of Aluminizing Kinetics, and Thermal Behavior

Advanced Engineering Materials, EarlyView.
This study explored how effective nickel aluminide coatings are obtained in providing oxidation resistance applied to the Inconel 738 alloy, modeling with diffusion models. In the present study, kinetics and thermal behavior of the Inconel 738 alloy were studied by the low‐temperature thermoreactive aluminizing process, which was carried out at 625°C ...
Gozde Celebi Efe, Tuba Yener, Suayb Cagri Yener, Mourad Keddam, Cuma Bindal   +4 more
wiley   +1 more source

A Multi-Parameter Iterative Design-Correction Method and Performance Analysis for sCO₂ Axial Turbine Stages

Applied Sciences
To facilitate accurate physical interpretation and representation of various design concepts for supercritical carbon dioxide (sCO2) axial turbines and to improve both the efficiency and accuracy of their thermodynamic design, two conceptual design ...
Luhan Yin, Lei Zhang, Yuang Shi, Luotao Xie, Zichun Yang   +4 more
doaj   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Secondary flows and inlet skew in axial flow turbine cascades [PDF]

, 1987
This thesis presents a detailed experimental investigation of the effects of inlet skew on the secondary flows and losses in a linear cascade of high turning turbine rotor blades.
Walsh, J.A, Walsh, Joseph Anthony
core  

Numerical Analysis of Flow Characteristics in Impeller-Guide Vane Hydraulic Coupling Zone of an Axial-Flow Pump as Turbine Device

Journal of Marine Science and Engineering, 2023
An axial-flow pump as a turbine (PAT), as compared to the conventional Francis turbine, has the advantages of not being restricted by the terrain and having lower cost to reverse the pump as a turbine for power generation.
Fan Yang, Zhongbin Li, Yuting Lv, Jindong Li, Guangxin Zhou, Ahmed Nasr   +5 more
doaj   +1 more source

Low‐Angle Grain Boundaries and Re‐Segregation in Single‐Crystalline Ni‐Base Superalloys

Advanced Engineering Materials, EarlyView.
This work demonstrates that Re‐segregation at low‐angle grain boundaries (LAGBs) in Ni‐base superalloys is influenced by misorientation angle. Advanced microscopy and atom probe tomography reveal that higher misorientation angles increases Re‐segregation.
Alireza B. Parsa, Aparna Saksena, Alesander Kostka, Pascal Thome, Felicitas Scholz, Alexandre Mussi, Christoph Somsen, Baptiste Gault, Jan Frenzel, Gunther Eggeler   +9 more
wiley   +1 more source