Remarks on a blast sound propagation model for noise management purposes at military training areas

This study is dedicated to the regional history of the East-West conflict on the basis of the relationship between the Germany military and the Belgian armed forces stationed in Germany. The central question it addresses is which factors were largely responsible for the interdependence between actors and institutions of both armies. In addition to analysing the limited time of the peak phase of Belgian military deployment in the Federal Republic 1946–1990, the book concentrates regionally on the military training areas of Vogelsang in the Eifel and the Wahner Heide near Cologne as military contact zones. For this purpose, the author evaluates unpublished archival sources at the local level for the first time.

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Flow-dependent modeling of acoustic propagation based on DG-FEM method

Journal of Atmospheric and Oceanic Technology ◽

10.1175/jtech-d-21-0001.1 ◽

2021 ◽

Author(s):

Zichen Wang ◽

Jian Xu ◽

Xuefeng Zhang ◽

Can Lu ◽

Kangkang Jin ◽

...

Keyword(s):

Sound Propagation ◽

Transmission Loss ◽

Acoustic Propagation ◽

Water Area ◽

Current Speed ◽

Propagation Model ◽

Propagation Loss ◽

Two Dimensional ◽

Underwater Sound ◽

Ocean Environment

AbstractThis paper proposes a two-dimensional underwater sound propagation model using the Discontinuous Galerkin Finite Element Method (DG-FEM) to investigate the influence of current on sound propagation. The acoustic field is calculated by the convected wave equation with the current speed parameter. Based on the current speed data from an assimilation model, a two-dimensional coupled acoustic propagation model in the Fram Strait water area is established to observe the variability in propagation loss under different seasonal velocities in the real ocean environment. The transmission loss and signal time structure are examined. The results obtained in different source frequencies are also compared. It appears that the current velocity, time and range variation all have an effect on underwater sound propagation.

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An outdoor sound propagation model in concert with geographic information system software

The Journal of the Acoustical Society of America ◽

10.1121/1.5101904 ◽

2019 ◽

Vol 145 (3) ◽

pp. 1903-1903

Author(s):

Nathan D. Tipton ◽

Victor Sparrow

Keyword(s):

Information System ◽

Geographic Information System ◽

Sound Propagation ◽

Geographic Information ◽

Propagation Model ◽

System Software

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Nature conservation on decommissioned military training areas – German approaches and experiences

Journal for Nature Conservation ◽

10.1016/j.jnc.2019.02.003 ◽

2019 ◽

Vol 49 ◽

pp. 1-8 ◽

Cited By ~ 2

Author(s):

Götz Ellwanger ◽

Karin Reiter

Keyword(s):

Nature Conservation ◽

Military Training ◽

Military Training Areas

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Finite-Element Analysis of Effect of Wide-Base Tire on Tire-Pavement Noise

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.723.105 ◽

2013 ◽

Vol 723 ◽

pp. 105-112 ◽

Cited By ~ 2

Author(s):

Jia Sheng Yang ◽

Tien Fang Fwa ◽

Ghim Ping Ong ◽

Chye Heng Chew

Keyword(s):

Finite Element ◽

Sound Propagation ◽

Near Field ◽

Interaction Model ◽

Past Research ◽

Propagation Model ◽

Computer Simulation Model ◽

Element Analysis ◽

Noticeable Effect ◽

Pavement Noise

This paper investigates the effect of tire width to tire-pavement noise. A tire-pavement noise numerical model in the near field has been developed using the three-dimensional finite-element method, and performed in the standard FEM code package ADINA. The model is composed of two main components: a rolling tire pavement interaction model and a sound propagation model. The tire width studied ranged from 180 to 210 mm. The computer simulation model was calibrated and validated using experimental results made available from past research. From the simulation results, it was found that tire width has a noticeable effect on tire-pavement noise. In particular, it was found that tires with wider base were found to produce higher noise levels.

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