Results 71 to 80 of about 230,861 (348)
Prediction of rotating-blade vortex noise from noise of nonrotating blades [PDF]
Measurements were conducted in an acoustic wind tunnel to determine vortex noise of nonrotating circular cylinders and NACA 0012 airfoils. Both constant-width and spanwise tapered models were tested at a low turbulence level.
Amiet, R. K. +2 more
core +1 more source
Vortex-induced vibration of a square-section cylinder with incidence angle variation [PDF]
, 2010 Vortex-induced vibration (VIV) occurs when vortex shedding from a body results in fluctuating forces that, in turn, cause the body to vibrate. This can result in undesired large-amplitude vibrations leading to structural damage or catastrophic failure ...
Lo Jacono, David +3 more
core
Flow control downstream of a circular cylinder by a permeable circular cylinder in deep water
, 2020 Bu çalışmada amaç, derin su içerisinde bulunan dairesel silindir arkasındaki akış yapısını silindir çevresine yerleştirilmiş ağ yapılı dış silindirler vasıtasıyla parçacık görüntülemeli hız ölçüm tekniği kullanılarak araştırmaktır. Deneyler boyunca iç silindir çapına bağlı (d=30 mm) Reynolds sayısı 5000 olarak sabit tutulmuştur. Dış silindir çapının ve
openaire +2 more sources
Robust Spot Melting by 3D Spot Arrangements in Electron Beam Powder Bed Fusion
Advanced Engineering Materials, EarlyView.This work proposes an approach to replace separately melted contours for spot melting in electron beam powder fusion. Adapting the spot arrangements close to the contour combined with stacking yields a comparable surface quality without the inherent challenges of separate contours, as demonstrated, by electron optical images and roughness measurements.
Tobias Kupfer +4 more
wiley +1 more source
Aerodynamic instabilities of twin circular cylinders
Journal of Wind Engineering and Industrial Aerodynamics, 1988 The aerodynamic, or more generally fluid-dynamic, instability of the downstream circular cylinder in the wake of a similar cylinder in subcritical flow is the focal point of this paper. These phenomena are known to cause fatigue problems and impair the serviceability and safety of structures in various engineering fields.
M. Matsumoto, N. Shiraishi, H. Shirato
openaire +2 more sources
Advanced 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
Computation of the inviscid drift force caused by nonlinear waves on a submerged circular cylinder
International Journal of Naval Architecture and Ocean Engineering, 2011 In this paper, we focused on computing the higher-harmonic components of the transmitted wave passing over a submerged circular cylinder to show that it is causing a horizontal negative drift force.
Hyeok-Jun Koh, Il-Hyoung Cho
doaj +1 more source
Microstructure Evolution of a VMnFeCoNi High‐Entropy Alloy After Synthesis, Swaging, and Annealing
Advanced Engineering Materials, EarlyView.The synthesis and processing (rotary swaging and annealing) of the novel VMnFeCoNi alloy is investigated, alongside the estimation of the grain size effect on hardness. Analysis of a wide grain size range of recrystallized microstructures (12–210 µm) reveals a low annealing twin density.
Aditya Srinivasan Tirunilai +6 more
wiley +1 more source
Neutral Inhomogeneity in Circular Cylinder Subjected to Axial Load on its Lateral Boundary
International Journal of Engineering and Management Sciences, 2020 In this paper we consider the problem of single circular elastic inhomogeneity embedded within a circular cylinder whose curved boundary surface is subjected to surface traction acting on axial direction.
István Ecsedi +2 more
doaj +1 more source
Influence of Test Temperature and Test Frequency on Fatigue Life of Aluminum Alloy EN AW‐2618A
Advanced Engineering Materials, EarlyView.The influence of test temperature and test frequency on the fatigue life of EN AW‐2618A is investigated. High‐cycle fatigue tests are performed at different test temperatures and frequencies on the 1000 h/230°C overaged state. Both test parameters reduce fatigue life due to time‐dependent damage mechanisms.
Ying Han +5 more
wiley +1 more source