Noise is still an unsolved problem of our time and influences the public health and well-being. So sound-exposure gains more and more in importance. This study examines the influence of turbulent vertical profiles of wind and temperature on the sound propagation, using the model SMART (sound propagation model of the atmosphere using ray-tracing). For several states of atmospheric stability, ten-minutetime series of vertical wind and temperature profiles were constructed and used as input data for the model. Simulations of the sound attenuation showed that turbulence affects the sound propagation in the atmosphere. This influence is reflected in a
reduction of the sound attenuation level in the downwind area, whereas the sound shadow remains almost unaffected. The influence increases with the distance to the source and depends on the atmospheric stability.
Beside the average influence due to turbulence, a “worst-case” scenario with the highest noise immission during the simulated time range was analyzed. Based on the results of this study, a new SMART-module, taking turbulence into account by parameterizations, was developed. The developed turbulence module is an
upgrade of the sound model SMART and helps to improve the sound immission forecasts, including meteorological effects.
| Identifer | oai:union.ndltd.org:DRESDEN/oai:qucosa:de:qucosa:16366 |
| Date | 27 September 2017 |
| Creators | Rost, Florian, Ziemann, Astrid, Raabe, Armin |
| Publisher | Universität Leipzig |
| Source Sets | Hochschulschriftenserver (HSSS) der SLUB Dresden |
| Language | English |
| Detected Language | English |
| Type | info:eu-repo/semantics/acceptedVersion, doc-type:article, info:eu-repo/semantics/article, doc-type:Text |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | urn:nbn:de:bsz:15-qucosa-212040, qucosa:14999 |
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