Validation of a numerical model for predicting stalled flows in a low-speed fan—part I: Modification of Spalart–Allmaras turbulence model

KB Lee, M Wilson, M Vahdati - Journal of …, 2018 - asmedigitalcollection.asme.org
The original Spalart–Allmaras (SA) model is known to predict premature stall when applied
to fan or compressor, which is in line with the observation of other researchers who use the …

Design and analysis of an intentional mistuning experiment reducing flutter susceptibility and minimizing forced response of a jet engine fan

F Figaschewsky, A Kühhorn… - … Expo: Power for …, 2017 - asmedigitalcollection.asme.org
Recent demands for a reduction of specific fuel consumption of jet engines have been
opposed by increasing propulsive efficiency with higher bypass ratios and increased engine …

Feasibility study of longitudinal–torsional-coupled rotary ultrasonic machining of brittle material

J Wang, J Zhang, P Feng… - Journal of …, 2018 - asmedigitalcollection.asme.org
In order to further improve the processing performance of rotary ultrasonic machining (RUM),
a novel longitudinal–torsional-coupled (LTC) vibration was applied to the RUM. An …

Exponential stabilization of fully actuated planar bipedal robotic walking with global position tracking capabilities

Y Gu, B Yao, CS George Lee - Journal of …, 2018 - asmedigitalcollection.asme.org
This paper focuses on the development of a model-based feedback controller to realize high
versatility of fully actuated planar bipedal robotic walking. To conveniently define both …

Improving the flutter margin of an unstable fan blade

S Stapelfeldt, M Vahdati - Journal of …, 2019 - asmedigitalcollection.asme.org
The aim of this paper is to introduce design modifications that can be made to improve the
flutter stability of a fan blade. A rig fan blade, which suffered flutter in the part-speed range …

On the importance of engine-representative models for fan flutter predictions

S Stapelfeldt, M Vahdati - Journal of …, 2018 - asmedigitalcollection.asme.org
Discrepancies between rig tests and numerical predictions of the flutter boundary for fan
blades are usually attributed to the deficiency of computational fluid dynamics (CFD) models …

[图书][B] Composite uhbr fan for forced response and flutter investigations

T Eggers, J Friedrichs, J Goessling, JR Seume… - 2021 - asmedigitalcollection.asme.org
Abstract In the CA3ViAR (Composite fan Aerodynamic, Aeroelastic, and Aeroacoustic
Validation Rig) project, a composite low-transonic fan is designed and tested. The aim is a …

Effect of geometry variability on transonic fan blade untwist

Y Lu, B Lad, J Green, S Stapelfeldt… - International Journal of …, 2019 - mdpi.com
Due to manufacturing tolerance and deterioration during operation, fan blades in the same
engine exhibit geometric variability. The absence of symmetry will inevitably exacerbate and …

On improvement of the frequency bandwidth of nonlinear vibration energy harvesters using a mechanical motion rectifier

WC Tai, M Liu, Y Yuan, L Zuo - … of Vibration and …, 2018 - asmedigitalcollection.asme.org
This paper presents a broadband vibration energy harvester (VEH) which consists of a
monostable Duffing oscillator connected to an electromagnetic generator via a mechanical …

Adaptive unified monitoring system design for tire-road information

S Cheng, M Mei, X Ran, L Li… - Journal of …, 2019 - asmedigitalcollection.asme.org
Knowledge of the tire-road information is not only very crucial in many active safety
applications but also significant for self-driving cars. The tire-road information mainly …