Zobrazeno 1 - 10
of 525
pro vyhledávání: '"sound barrier"'
Autor:
Beck, Bernard1
Publikováno v:
Multicultural Perspectives. Jul-Sep2022, Vol. 24 Issue 3, p184-187. 4p.
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-23 (2024)
Abstract This study investigates the impact of the noise radiated from airplanes, urban rail transit, high-speed railways, and urban roads on residents near an airport. The results showed that all respondents near the airport were highly annoyed with
Externí odkaz:
https://doaj.org/article/ad269c4c6abe49098978b4b9a4ad3083
Publikováno v:
Frontiers in Physics, Vol 12 (2024)
This study presents a novel method for wideband acoustic analysis using the Boundary Element Method (BEM), addressing significant computational challenges. Traditional BEM requires repetitive computations across different frequencies due to the frequ
Externí odkaz:
https://doaj.org/article/39ee5e8c49654d3586086b271f1e72de
Publikováno v:
Railway Engineering Science, Vol 32, Iss 2, Pp 177-193 (2024)
Abstract Investigations into the aerodynamic properties of vertical sound barriers exposed to high-speed operations employ computational fluid dynamics. The primary focus of this research is to evaluate the influence of train speed and the distance (
Externí odkaz:
https://doaj.org/article/28333454269c4d70ac4758a676a32c99
Autor:
Lili Cai, Yiran Mo, Suofan Yang, Yaxin Lu, Xiaobin Qian, Chenglin Lv, Dong Zhang, Chuanhui You
Publikováno v:
Buildings, Vol 14, Iss 10, p 3118 (2024)
A new type of porous sound-absorbing sound barrier was developed with quartz sand and self-developed polysiloxane resin. The forming process of the material was studied. The test specimens of the porous sound-absorbing sound barrier were prepared wit
Externí odkaz:
https://doaj.org/article/8f0fe5eaf4b942f48c058c6d5a7ceb7d
Autor:
Riana Mayasari, M.Sang Gumilar Panca Putra, Hendra Hadiwijaya, Alfitriani, Rian Rahmanda Putra
Publikováno v:
Kaibon Abhinaya, Vol 5, Iss 2, Pp 138-148 (2023)
Tanjung Pinang II Village is located 10 km from the administrative center of Ogan Ilir Regency, Indralaya. Tanjung Pinang II Village can be developed as a tourist area due to the easy access. The problems of to be tourist village is unproductive of p
Externí odkaz:
https://doaj.org/article/442a0c9c1dda4abca8416a5ed66a293c
Publikováno v:
IEEE Access, Vol 11, Pp 27702-27718 (2023)
Today, the majority of the commercial electrified vehicles use Interior Permanent Magnet Motors (IPMSMs) for propulsion. An IPMSM can deliver high starting torque and high efficiency in the low- and medium-speed operation, which makes it attractive f
Externí odkaz:
https://doaj.org/article/213107a320af407c8e0eaa7a74229ea5
Publikováno v:
Journal of Applied Fluid Mechanics, Vol 16, Iss 3, Pp 413-427 (2023)
The aerodynamic noise from the new high-speed Maglev train (NHMT) is significant. One way to reduce it is to use a fully enclosed sound barrier (FESB). This paper studies the aerodynamic noise characteristics of the NHMT operating inside a FESB at 60
Externí odkaz:
https://doaj.org/article/4b5922f1371e41e2b249b709a038c873
Publikováno v:
Buildings, Vol 13, Iss 12, p 3075 (2023)
In this study, dynamic numerical analysis was conducted on the existing sound barrier wall structure and the recently developed double-sided solar-module-integrated sound barrier wall structure using the finite-difference method for numerical modelin
Externí odkaz:
https://doaj.org/article/24e6d05a1f2041a6a0ab9092508a17c0
Publikováno v:
Applied Sciences, Vol 14, Iss 7, p 2898 (2024)
For high-speed railway sound barriers, determining the aerodynamic pressure generated by high-speed trains is crucial for their structural design. This paper investigates the distribution of aerodynamic pressure on the sound barrier caused by high-sp
Externí odkaz:
https://doaj.org/article/d5283c2ca8ae438b8df298f82952270b