Search for dissertations about: "Street canyon"
Showing result 1 - 5 of 6 swedish dissertations containing the words Street canyon.
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1. Numerical study on flow and pollutant dispersion inside street canyons
Abstract : This thesis analyzes the characteristics of flow pattern and vehicle-emitted pollutant dispersion in roughness surface layer. In an urban environment, wind flow and transported-pollutant source interfere strongly with buildings and other roughness elements on the surface ground, which results in complex characteristics of flow pattern and pollutant dispersion in 3D circumstances. READ MORE
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2. Dispersion and Transformation of Traffic Exhaust Particles in the Urban Atmosphere
Abstract : Ultrafine particles, their sources and fate in the atmosphere are currently key issues in atmospheric research owing to concern about their effects on human health and global climate. Traffic emissions are a dominating source of ultrafine particles, especially in urban areas. READ MORE
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3. Sound propagation to two-dimensional shielded urban areas: a numerical and scale model study of façade treatments
Abstract : .... READ MORE
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4. Prediction of Traffic Noise Shielding by City Street Canyons
Abstract : Reducing the sound level on the exposed building facades due to traffic noise in cities is difficult and expensive. Creating access for the inhabitants to a quiet side can be an alternative method for reducing the annoyance. Therefore it is of interest to predict the level on shielded positions such as courtyards. READ MORE
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5. Prediction and Optimisation of Traffic Noise. A Study on Noise Barriers and Shielded Areas
Abstract : The main contribution of noise levels in cities is today road traffic. The strongest source for all road vehicles is most often the tyre-road contact. This source position close to the ground is fortunate with respect to secondary noise abatement measures, such as absorbing road surfaces or noise barriers. READ MORE