Analytical modelling and characterisation of an infrasound generator in the air

Vincent, P.; Larsonnier, Franck; Rodrigues, Dominique; Durand, Stéphane

doi:10.1016/j.apacoust.2018.12.033

Cited by 9 publications

(2 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In Poland, too, wind turbine masts over a hundred meters high are installed on the Baltic coast. Hypothetically, 200 or even 300-meterhigh steel structures on which wind turbines are installed can be assumed (Vincent et al, 2019). Such a wind farm can theoretically achieve a capacity close to that of a small power plant.…”

Section: Table 1 Characteristics Of the Transformation From The Industrial Age To The Service Agementioning

confidence: 99%

Changes in Management During Transformation of Power Industry

Rzepka¹,

Borowiecki²,

Miśkiewicz³

et al. 2021

ERSJ

View full text Add to dashboard Cite

Purpose: Given the considerable pollution of land, air, and water, it seems urgently necessary to change the sources of energy production so that their use does not pollute the environment. Special priority should be given to the generation of electricity from solar energy (photovoltaics) and wind. This article aims to present conceptual changes in the development of Industry 4.0 and to point out further research directions. Design/Methodology/Approach: The first part of the article introduces possible changes, the concept of Industry 4.0, management factors, and an overview of the research results to date. To identify the changes taking place, a survey was conducted with a group of 330 managers from 5 countries (USA, United Kingdom, Poland, Hungary, India, and Georgia). In the second part, further empirical research (related to organizational structure and decision making) and its implementation in organizations is proposed. Findings: The summary contains conclusions on management changes based on the results of the presented research.Practical Implications: The research results collected can provide an impetus for the organization's development in a direction that facilitates participation in the processes of sustainable development. These processes contribute to the improvement of the ecosystem and the rationalization of energy sources and the way they are used. Originality/Value: The research results show that organizations need to consider and adapt to changing conditions. An analysis shows to implement management changes and be competitive, organizations operating in the industry 4.0 era should first build their so-called "ecosystem" by assessing their maturity level in order to understand what is achievable.

show abstract

Section: Table 1 Characteristics Of the Transformation From The Industrial Age To The Service Agementioning

confidence: 99%

Changes in Management During Transformation of Power Industry

Rzepka¹,

Borowiecki²,

Miśkiewicz³

et al. 2021

ERSJ

View full text Add to dashboard Cite

show abstract

“…Because of the placement at the elevation (tens of meters above the ground) of the steam ejection installation, the noise is spread omnidirectional in large areas. The noise spectrum of steam discharge consists mostly of low frequencies noise, which is very poorly dampened by the air [2]. It also poses a significant threat to the life and health of people [3].…”

Section: Introductionmentioning

confidence: 99%

Archives of Thermodynamics

Gaj,

Sobczak,

Kopania

et al. 2021

View full text Add to dashboard Cite

Steam discharge produces noise due to rapid expansion and a temperature drop of ejected steam. This is why steam silencers are used to change one-stage into multi-stage expansion, which reduces the intensity of pressure and temperature drop during this process and shifts emitted noise into higher frequencies, which are easier to dampen. This paper presents a flow-acoustic numerical model of a steam silencer. It is meant to help to obtain a precise analysis of phenomena occurring in steam silencers and improve the process of designing this type of device. The model described in this paper was based on the parameters of a real working unit manufactured in the Institute of Power Engineering -Thermal Technology Branch. Most of the steam silencers are designed based on construction guidelines that have not been changed for a long time. This restrained an increase in the acoustics efficiency of the steam silencers. An improvement of their flow and acoustic properties allows for the development of smaller, more efficient, and lighter construction. The current version of the model was used for the analysis of flow and acoustic changes which occur after modifying the lower region of a shell of the steam silencer. The proposed modification allowed for a 19% increase in mass flow rate through the silencer and noise reduction in the low-frequency range.

show abstract

The calibration methods of hydrophones for underwater environmental sound measurements or biomedical ultrasound measurements: A review

Qin,

Lu,

et al. 2025

Measurement

View full text Add to dashboard Cite

Analytical modelling and characterisation of an infrasound generator in the air

Cited by 9 publications

References 13 publications

Changes in Management During Transformation of Power Industry

Changes in Management During Transformation of Power Industry

Archives of Thermodynamics

The calibration methods of hydrophones for underwater environmental sound measurements or biomedical ultrasound measurements: A review

Contact Info

Product

Resources

About