Results 31 to 40 of about 10,638 (359)

Accurate 2-D Modelling of Transonic Compressor Cascade Aerodynamics

Aerospace, 2019
Modern aeronautic fans are characterised by a transonic flow regime near the blade tip. Transonic cascades enable higher pressure ratios by a complex system of shockwaves arising across the blade passage, which has to be correctly reproduced in order to ...
Tommaso Piovesan, Andrea Magrini, Ernesto Benini   +2 more
doaj   +1 more source

Implementation of Three-Dimensional Inverse Design and Its Application to Improve the Compressor Performance

Energies, 2020
The implementation of a three-dimensional viscous inverse design used for an axial compressor is introduced in this paper. The derivation process of the inverse design algorithm is also described in detail. Moreover, an improved blade update method and a
Yu Duan, Qun Zheng, Bin Jiang, Aqiang Lin, Wenfeng Zhao   +4 more
doaj   +1 more source

Using forward end-sweep to reduce transonic cantilevered stator losses to improve compressor performance

Engineering Applications of Computational Fluid Mechanics, 2018
The complicated flows in a transonic cantilevered stator would cause serious aerodynamic losses and reducing these losses would contribute much to improving the overall aerodynamic performance of a compressor.
Hanan Lu, Qiushi Li, Tianyu Pan
doaj   +1 more source

Experimental Research on Noise Reduction for Continuous Transonic Wind Tunnel Loop

Xibei Gongye Daxue Xuebao, 2020
The noise level of wind tunnel test section is respected as one of the most important performance specifications to represent the flow field quality, especially for large scale wind tunnel. According to the acoustic experimental research conducted in the

doaj   +1 more source

Axial transonic compressor performance enhancement with circumferential grooves [PDF]

Mechanical Sciences, 2020
Casing treatment has been broadly used as a prudent passive flow control technique to improve the stall margin with a small drop in efficiency. The effect of grooves in certain details is overlooked however, different grooves shape (angels and location ...
N. Ahmad, Q. Zheng, H. Fawzy, T. Yaqoob, S. Abdu Ahmad, J. Bin   +5 more
doaj   +1 more source

The Aerodynamic Effects of the Blade Lean on a High-Aspect-Ratio Transonic Axial Flow Rotor [PDF]

International Journal of Advanced Design and Manufacturing Technology, 2018
In this study, the effect of tangential blade lean on the aerodynamic characteristics of low-transonic, high-aspect-ratio axial flow compressor rotor has been investigated by using the computational fluid dynamics.
Mansour Asghari, Mohsen Agha Seyed Mirzabozorg, Mahmood Adami   +2 more
doaj  

Sol–Gel Derived Polymer Precursors for Stereolithography of ZrC

Advanced Engineering Materials, EarlyView.
ZrC is a critical material target for extreme temperature conditions. This report describes a protocol for preparing ZrC ceramics via stereolithography and examines the impact of the polymer matrix on carbothermal reduction and mechanical stability of 3D printed ZrC.
Charles J. Rafalko, Evelyn Wang, Michael A. Hickner   +2 more
wiley   +1 more source

Biodegradable and Recyclable Luminescent Mixed‐Matrix‐Membranes, Hydrogels, and Cryogels based on Nanoscale Metal‐Organic Frameworks and Biopolymers

Advanced Functional Materials, EarlyView.
The study presents biodegradable and recyclable mixed‐matrix membranes (MMMs), hydrogels, and cryogels using luminescent nanoscale metal‐organic frameworks (nMOFs) and biopolymers. These bio‐nMOF‐MMMs combine europium‐based nMOFs as probes for the status of the materials with the biopolymers agar and gelatine and present alternatives to conventional ...
Moritz Maxeiner, Julian Burkhart, Kateryna Borysova, Chiara Mazzariol, Klaus Müller‐Buschbaum   +4 more
wiley   +1 more source

The Effect of a Variable Cantilevered Stator on 1.5-Stage Transonic Compressor Performance

International Journal of Turbomachinery, Propulsion and Power
Future aero engine designs must address environmental challenges and meet noise and emissions regulations. To increase efficiency and reduce size, axial compressors require higher pressure ratios and a more compact design, leading to necessary ...
Benedikt Radermacher, Fabian Sebastian Klausmann, Felix Jung, Jonas Bargon, Heinz-Peter Schiffer, Bernd Becker, Patrick Grothe   +6 more
doaj   +1 more source

Multiscale Structuring of Hydroxyapatite via Two‐Photon Lithography of Nanocomposites

Advanced Functional Materials, EarlyView.
Hydroxyapatite scaffolds are of great interest in bone tissue engineering applications, ranging from 3D cell culture to regenerative medicine. Using two‐photon lithography of a transparent nanocomposite, hydroxyapatite microstructures with features ranging from submicron to centimeter‐scale are fabricated. This allows to mimic the natural bone geometry,
Leonhard Hambitzer, Jan Mathis Hornbostel, Richard Prediger, Sebastian Kluck, Michael Daub, Cornelia Lee‐Thedieck, Frederik Kotz‐Helmer   +6 more
wiley   +1 more source