Zobrazeno 1 - 10
of 577
pro vyhledávání: '"noise characteristics"'
Publikováno v:
Journal of Applied Fluid Mechanics, Vol 18, Iss 1, Pp 290-303 (2024)
This paper utilizes experiments and numerical simulations to investigate the effects of different attack angles of the rotor and the number of guide vanes on the vortex-solid interaction and noise generation of an axial flow fan. The noise and the fl
Externí odkaz:
https://doaj.org/article/0c473efb4bdc43d89b78d827e66098db
Publikováno v:
Вестник Дагестанского государственного технического университета: Технические науки, Vol 51, Iss 3, Pp 172-179 (2024)
Objective. The identification of increased noise levels from ventilation systems during the operation of buildings necessitates complex and costly procedures to detect and eliminate noise sources, conduct dismantling work, install additional silencer
Externí odkaz:
https://doaj.org/article/16c16bfc579346ad864be92b6f01cfda
Publikováno v:
Ecological Informatics, Vol 84, Iss , Pp 102919- (2024)
The rapid growth of offshore wind farms has become a global priority, with both new and total installed capacities increasing sharply. Consequently, underwater noise generated with these developments has garnered significant attention. This study inv
Externí odkaz:
https://doaj.org/article/a4a06c47b17746d9bd6e9a868e87eee9
Publikováno v:
Haiyang Kaifa yu guanli, Vol 41, Iss 5, Pp 138-145 (2024)
Underwater pile driving is a common operational method in engineering projects such as offshore bridges and offshore wind farms, and the impact of underwater noise on the marine ecological environment has attracted increasing attention. This paper an
Externí odkaz:
https://doaj.org/article/30c62ffbb08644a0b98e30a24cf5a964
Publikováno v:
Journal of Applied Fluid Mechanics, Vol 17, Iss 7, Pp 1485-1498 (2024)
This paper presents a comprehensive investigation of flow-induced noise characteristics in ethylene cracking furnace tubes, covering both pre- and post-coking conditions. Large-eddy simulation (LES) was employed in conjunction with a generalized Ligh
Externí odkaz:
https://doaj.org/article/b22bccfb9d654743bc3984790d231b3b
Autor:
Namug Heo, Ji-Hye Kim
Publikováno v:
Journal of Marine Science and Engineering, Vol 12, Iss 9, p 1681 (2024)
The occurrence of cavitation in marine propellers is a major source of noise in ships. Consequently, the occurrence and noise characteristics of cavitation must be better understood to control this issue. This study focuses on identifying the occurre
Externí odkaz:
https://doaj.org/article/b9831a20c3e44d539fa163becb69d6de
Publikováno v:
Journal of Applied Fluid Mechanics, Vol 16, Iss 10, Pp 1989-2001 (2023)
To improve the overall performance of marine centrifugal pumps (MCPs), their vibration and noise performances were optimized using the hydraulic design of the volute casing parameters considering a constant hydraulic performance at a specific speed o
Externí odkaz:
https://doaj.org/article/d29ddd5d846a4bcd90297c6ed9798c13
Publikováno v:
Photonics, Vol 11, Iss 6, p 574 (2024)
The duty-cycle randomness (DCR) of the Bragg grating of the distributed feedback (DFB) lasers introduced by the fabrication process is inevitable, even with state-of-the-art technologies such as electron beam lithography and dry or wet etching.This w
Externí odkaz:
https://doaj.org/article/0bade111f86b42a0a4d34611be3539ce
Publikováno v:
Results in Physics, Vol 53, Iss , Pp 106911- (2023)
Spin-based comagnetometers have essential applications in studying new physical effects such as the fifth force, Lorentz violations, and spin-gravity interactions. In this paper, a transfer function model of the spin precession phase (frequency) is d
Externí odkaz:
https://doaj.org/article/5d58deadbaf94d32a05c1c6e67c04fda
Publikováno v:
Buildings, Vol 14, Iss 4, p 970 (2024)
Rail transit is an important part of the urban transportation system, while the noise generated during construction seriously affects the engineering personnel and surrounding residents. To investigate the noise emissions and characteristics during t
Externí odkaz:
https://doaj.org/article/1f7b9279c08b47c9b8430da8da474152