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Daniil Sergeev, Irina V?yushkina, Vladimir Eremeev, Andrei Stulenkov and Kirill Pyalov
This paper presents the results of a study of self-sustained processes excited in a Helmholtz resonator after a flow over its orifice. A comparative analysis of various approaches to the numerical modeling of this problem was carried out, taking into acc...
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Daniel G. Allasia, Liriane Élen Böck, Jose G. Vasconcelos, Leandro C. Pinto, Rutineia Tassi, Bruna Minetto, Cristiano G. Persch and Robson L. Pachaly
Transient flows in stormwater systems can lead to damaging and dangerous operational conditions, as exemplified by geysering events created by the uncontrolled release of entrapped air pockets. Extreme rain and associated rapid inflows may result in air ...
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Lorenzo Tieghi, Giovanni Delibra, Johan van der Spuy and Alessandro Corsini
Air-cooled condensers (ACCs) are commonly found in power plants working with concentrated solar power or in steam power plants operated in regions with limited water availability. In ACCs, the flow of air is driven toward the heat exchangers by axial fan...
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Yuri Kuzmin and Stanislav Proshkin
Based on a rigorous solution to the problem, analytical expressions are obtained for calculating the diffraction of the electromagnetic field of a grounded cable on an elongated dielectric spheroid in a conductive layer. The field of a grounded AC cable ...
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Dong Wu, Zhichao Jia, Yanqi Zhang and Junhui Wang
The heat dissipated from high geo-temperature underground surrounding rocks is the main heat source of working faces, while thermal water upwelling and trickling into the roadway will notably deteriorate the mine?s climate and thermal comfort. Predicting...
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Weicheng Wu, Yalan Liu and Mingxing Hu
Geo-information technology plays a critical role in urban planning and management, land resource quantification, natural disaster risk and damage assessment, smart city development, land cover change modeling and touristic flow management. In particular,...
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Bo Lu, Xiangdong Ni, Shufeng Li, Kezhi Li and Qingzheng Qi
According to the agronomic requirements of cotton precision seeding, the researchers designed a split seeding system to achieve high-speed precision seeding on the membrane. The 3D models used in the simulation process were created using Solidworks. They...
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Tengfei (Tim) Zhang, Tinglu Zhang and Sumei Liu
Wearing face masks is essential for reducing infection during the COVID-19 pandemic. However, ordinary surgical face masks can provide only moderate protection. The N95 face masks should provide sufficient protection but may impose complaints about breat...
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Tengfei (Tim) Zhang, Jinsong Dong and Sumei Liu
Leaked air from an aircraft cabin into its envelope walls through cracks can lead to a large amount of moisture condensation on inner shell skins and in insulation layers. The leaked-air rate is subject to the stack pressure difference and the geometry o...
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Christian Windemuth, Martin Lange and Ronald Mailach
A significant share of the conversion of thermal into electrical energy is realized by steam turbines. Formerly designed for continuous operation, today?s requirements include extended part load operation that can be accompanied by highly unstable flow c...
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