Results 41 to 50 of about 221,523 (306)

Optimal Design and Analysis of a High-Load Supersonic Compressor Based on a Surrogate Model

open access: yesAerospace, 2023
To explore the internal flow mechanism and improve the performance of a supersonic compressor, an efficient global optimization design method was developed for an axial flow compressor and applied in the optimization design of a prototype supersonic ...
Shiji Zhou   +5 more
doaj   +1 more source

Gas-liquid mass transfer : a comparison of down-and up-pumping axial flow impellers with radial impellers [PDF]

open access: yes, 2004
The performance of a down- and up-pumping pitched blade turbine and A315 for gas-liquid dispersion and mass transfer was evaluated and then compared with that of Rushton and Scaba turbines in a small laboratory scale vessel.
Aubin   +34 more
core   +2 more sources

Pyramidal Structures on Yttria‐Stabilized Zirconia after High Temperature Exposure at 1500°C: New Features on an Old Material

open access: yesAdvanced Engineering Materials, EarlyView.
New features on yttria‐stabilized zirconia after exposure at 1500°C: Newly discovered pyramidal structures on an old material. After exposure at 1550°C on the cross section of YSZ new features, namely pyramidal structures are discovered. These structures grow with time, increase in numbers, appear as singularities, are often arranged in strings, and ...
Doris Sebold   +2 more
wiley   +1 more source

Research on the Flow Mechanism of a High-Loading Biomimetic Low-Pressure Turbine Cascade

open access: yesAerospace
The biomimetic turbine has an excellent flow drag reduction ability and wide incidence adaptability, so it has the potential to achieve high efficiency within a wide working range of high-performance variable cycle engines.
Hanliu Deng   +8 more
doaj   +1 more source

Lightweight engine containment [PDF]

open access: yes, 1977
Kevlar fabric styles and weaves were studied, as well as methods of application for advanced gas turbine engines. The Kevlar material was subjected to high speed impacts by simple projectiles fired from a rifle, as well as more complex shapes such as fan
Weaver, A. T.
core   +1 more source

Time‐Dependent Oxidation and Scale Evolution of a Wrought Co/Ni‐Based Superalloy

open access: yesAdvanced Engineering Materials, EarlyView.
This study shows how a new wrought Co/Ni‐based superalloy resists oxidation at 800 ∘$^\circ$C. The oxide scale changes from rough, fast‐growing spinel to a dense, protective chromia–alumina layer. Atom probe analysis reveals tiny refractory‐rich bubbles at the interface that mark the transition to long‐term, diffusion‐controlled protection ...
Cameron Crabb   +6 more
wiley   +1 more source

Experiments on turbulent boundary layers along a circular cylinder with and without separation [PDF]

open access: yes, 1967
August 1967Includes bibliographical referencesSummary: Experiments were conducted in a turbulent boundary-layer near separation along a circular cylinder with the flow in the axial direction.
Fernholz, Hans   +1 more
core  

Parameter Variation in Planetary Ball Milling of Titanium Aluminide Powder in XHV‐Adequate Atmosphere

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates the effects of milling parameters, including rotational speed, milling duration, and ball‐to‐powder ratio, on TiAl particle size and morphology in an XHV‐equivalent atmosphere. The creation of oxide‐free surfaces enhances the mechanical properties of green bodies.
Jytte Möckelmann   +4 more
wiley   +1 more source

Computational study of free surface film flow and subsequent disintegration of a sheet and ligaments into droplets from a rotary disk atomizer

open access: yesEngineering Applications of Computational Fluid Mechanics, 2023
In the present study, a computational methodology based on computational fluid dynamics (CFD) is developed to investigate free surface film flow and its subsequent disintegration on a rotary disk atomizer.
Kuldeep Singh   +4 more
doaj   +1 more source

Gas turbine performence based creep life estimation using soft computing technique [PDF]

open access: yes, 2012
Accurate and simple prediction system has become an urgent need in most disciplines. Having the accurate prediction system for gas turbine components will allow the user to produce reliable creep life prediction.
Mohamed Zarti, Almehdi
core  

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