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Stephen Schade, Robert Jaron, Lukas Klähn and Antoine Moreau
The rotor?stator interaction noise is a major source of fan noise. Especially for low-speed fan stages, the tonal component is typically a dominant noise source. A challenge is to reduce this tonal noise, as it is typically perceived as unpleasant. There...
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Luke Bergmann, Luis Fernando Chaves, David O?Sullivan and Robert G. Wallace
The spread of COVID-19 is geographically uneven in agricultural regions. Explanations proposed include differences in occupational risks, access to healthcare, racial inequalities, and approaches to public health. Here, we additionally explore the impact...
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Yash Amonkar, James Doss-Gollin and Upmanu Lall
The potential for extreme climate events to cluster in space and time has driven increased interest in understanding and predicting compound climate risks. Through a case study on floods in the Ohio River Basin, we demonstrated that low-frequency climate...
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Cunfei Ma, Xianxu Fang, Xiaonan Ma, Xiantai Liu, Bingkun Xu and Xinmin Ge
By combining thermal simulation experiments with core data, thin sections, scanning electron microscopy (SEM), source rock, and high-pressure mercury and gas adsorption analysis, this paper evaluates the properties and models of shale reservoirs in the u...
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Ranieri Emanuele Nargi, Paolo Candeloro, Fabrizio De Gregorio, Giuseppe Ceglia and Tiziano Pagliaroli
An investigation of twin corotating rotors? interaction effects was performed by load (thrust and torque) measurements, flow field dynamics through Time-Resolved Particle Image Velocimetry, and acoustic emissions using a microphone array. Two rotors, eac...
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Luca Pagliarini, Luca Cattani, Vincent Ayel, Maksym Slobodeniuk, Cyril Romestant and Fabio Bozzoli
The present investigation deals with the quantification of fluid oscillation frequencies in a metallic pulsating heat pipe tested at varying heat loads and orientations. The aim is to design a robust technique for the study of the inner fluid dynamics wi...
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Ali Karimpour, Salam Rahmatalla and Casey Harwood
This article presents a new analysis to determine the variation in modal dynamic characteristics of bridge superstructures caused by hydrodynamic added mass (HAM) during progressive flooding. The natural frequency variations were numerically and experime...
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Hanzlah Akhlaq, Faheem Butt, Mamdooh Alwetaishi, Mamoon Riaz, Omrane Benjeddou and Enas E. Hussein
This paper presents the operational modal analysis of a 90-m-high RC minaret of an iconic mosque considered as a landmark of the city. The minaret was monitored for three days with 11 tri-axial MEMS accelerometers. The purpose of the study was to observe...
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Tina Unglaube and Dieter Brillert
With an increase in fluid densities in centrifugal compressors, fluid-structure interaction and coupled acoustoelastic modes receive growing attention to avoid machine failure. Besides the vibrational behavior of the impeller, acoustic modes building up ...
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Anastasiia Nazvanova, Guang Yin and Muk Chen Ong
Flow around two tandem cylinders at Re = 3.6 × 106 for different center-to-center spacing ratio (??/??
L
/
D
) is investigated numerically using two-dimensional (2D) Unsteady Reynolds-Averaged Navier?Stokes (URANS) equations combined with a standard ??-?...
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