Results 51 to 60 of about 15,761,319 (246)

WALL RESOLVED LARGE-EDDY SIMULATIONS OF HIGH-SPEED LOW-PRESSURE TURBINE CASCADES [PDF]

, 2023
peer reviewedThe current energy challenges in the field of aircraft propulsion demands a better understanding of turbine flows. The complexity of the flows and the geometrical configurations at play limit the feasibility of experimental investigations in
Lavagnoli, Sergio, Tene hedje, Patrick, Bechane, Yacine, Bricteux, Laurent   +3 more
core   +1 more source

Biodegradable and Biocompatible Functional Polymers for Biomedical Applications

Advanced Functional Materials, EarlyView.
Biodegradable and biocompatible functional polymers integrate electrical, mechanical, and stimuli‐responsive functionalities while enabling programmed degradation under physiological conditions. This review introduces recent advances in conductive, shape‐memory, self‐healing, photocurable, and adhesive polymer systems, emphasizing material design ...
Won Bae Han, Shuvra Mondal, Sungkeun Han, Chan‐Hwi Eom, Venkata Ramesh Naganaboina, Suk‐Won Hwang   +5 more
wiley   +1 more source

Cavity Flow Instabilities in a Purged High-Pressure Turbine Stage

International Journal of Turbomachinery, Propulsion and Power
As designers push engine efficiency closer to thermodynamic limits, the analysis of flow instabilities developed in a high-pressure turbine (HPT) is crucial to minimizing aerodynamic losses and optimizing secondary air systems.
Lorenzo Da Valle, Bogdan Cezar Cernat, Sergio Lavagnoli   +2 more
doaj   +1 more source

On Mixed Flow Turbines for Automotive Turbocharger Applications

International Journal of Rotating Machinery, 2012
Due to increased demands for improved fuel economy of passenger cars, low-end and part-load performance is of key importance for the design of automotive turbocharger turbines. In an automotive drive cycle, a turbine which can extract more energy at high
Bernhardt Lüddecke, Dietmar Filsinger, Jan Ehrhard   +2 more
doaj   +1 more source

Analysis and Identification of the Flow Pattern in a Specific High-Pressure Axial Turbine in Off-Design Conditions [PDF]

فناوری در مهندسی هوافضا
This research aims to identify the flow pattern in off-design conditions of a specific high-pressure axial turbine. The turbine was designed by writing the preliminary design code. Then, the geometry of this turbine was designed in CATIA and Ansys Design
Sahar Saharkhiz, Reza Aghaei Togh
doaj   +1 more source

Integrated Optimal Design of a Passive Wind Turbine System: An Experimental Validation [PDF]

, 2010
This work presents design and experimentation of a full passive wind turbine system without active electronic part(power and control). The efficiency of such device can be obtained only if the system design parameters are mutually adapted through an ...
Sareni, Bruno, Espanet, Christophe, Roboam, Xavier, Tran, Duc-Hoan, Tran, Duc Hoan   +4 more
core   +1 more source

Nano‐Architected Metallic Metamaterial With Enhanced Fatigue Resistance via Dislocation Starvation

Advanced Materials, EarlyView.
Nanoscale Ni single crystals exhibit remarkable fatigue resistance over an order of magnitude higher than that of bulk single crystals through dislocation starvation. By translating this mechanism into geometric nano‐architecture, nano‐architected Ni single‐crystal metamaterials achieve about twice the fatigue resistance of the bulk, despite their ...
Kota Sugisaka, Yamato Ishizaka, Hiroki Ikeda, Shigeo Arai, Masataka Abe, Yoshitaka Umeno, Hiroyuki Shima, Takashi Sumigawa   +7 more
wiley   +1 more source

Do not be Afraid of Small High-Speed Francis Turbines

Journal of Mechanical Engineering, 2018
In the first quarter of the last century hydraulic power plants were equipped with high-speed Francis turbines even in the situation when a contemporary project manager would suggest Kaplan turbine. The reason is simple. Mr.
Libor Koudelka
doaj   +1 more source

Research of electric power regeneration using automotive cooling fan (Influence of wind turbine on air resistance through vehicle cooling system)

Nihon Kikai Gakkai ronbunshu, 2015
This work aims at developing a new fan-turbine that operates as a cooling fan at a low vehicle speed and operates as a wind turbine at a high vehicle speed to generate electric power.
Shinichi ODA, Yutaka HASEGAWA, Hiroki SUZUKI, Tatsuo USHIJIMA, Hideki OOYA   +4 more
doaj   +1 more source

Flax Composites With Improved Interfacial Strength Through Microbially Induced Mineral Precipitation

Advanced Materials, EarlyView.
A bio‐inspired biomineralization strategy introduces an additional hierarchy to flax fiber composites. By controlling microbe‐mediated mineral particle deposition through tuned salt concentrations, stress transfer within the natural fiber composite is enhanced.
Deniz Sayinbas, Ingo Nettersheim, Jeong‐Joo Oh, Marie‐Eve Aubin‐Tam, Julie Teuwen, Kunal Masania   +5 more
wiley   +1 more source