Modelling and observation of heat losses from buildings: The impact of geometric detail on 3D heat flux modelling

The impact of 3D geometry complexity on the accuracy of simulating radiative, convective and conductive fluxes in an urban canyon was explored. The research involved the collection of meteorological data in an urban canyon in the city of Strasbourg, France, for input into a 3D model called LASER/F, which simulates the aforementioned fluxes. The...

The impact of street canyon morphology and traffic volume on NO₂ values in the street canyons of Antwerp

Air pollution remains a major environmental and health concern in urban environments, especially in street canyons that show increased pollution levels due to a lack of natural ventilation. Previous studies have investigated the relationship between street canyon morphology and in-canyon pollution levels. However, these studies are typically...

Air pollutant sinks on noise barriers: Where do they perform the best?

While laboratory experiments, numerical simulations as well as field tests have underlined the influence of noise barriers in dispersing vehicular emissions and reducing downwind peak concentrations, these pollutants still remain in the atmosphere. Artificial pollutant sinks (for example, particle capturing or toxic gas treating devices)...

Novel Acoustic Method Provides First Detailed Measurements of Sediment Concentration Structure Within Submarine Turbidity Currents

Turbidity currents transport prodigious volumes of sediment to the deep sea. But there are very few direct measurements from oceanic turbidity currents, ensuring they are poorly understood. Recent studies have used acoustic Doppler current profilers (ADCPs) to measure velocity profiles of turbidity currents. However, there were no detailed...

Ventilation efficiency of street canyons with intersections

When looking at domains with several building densities, the resulting average concentrations caused by traffic when unknown, are often linearised between known building densities. To verify if this assumption is correct, several cases of street canyons with intersections, are simulated using the DALESURBAN model. The traffic is represented by a...

LIVING WALL SYSTEM: As a strategy to mitigate the Urban Heat Island effect in Damascus

Urbanization has led to the accumulation of heat in urban areas. In other words, cities demonstrate higher temperatures than surrounding rural suburbs, known as the Urban Heat Island effect (UHI). This phenomenon has substantial consequences on energy consumption for cooling purposes, air quality, and human health.<br/>As a metropolitan city,...

The green canyon: Building towards a healthy life an style

Public Building, Public Realm Rotterdam. Urban intervention and architectural design of a multi functional building with a public plinth and dwellings on top.

Numerical modelling of Colorado sandbar growth: An improved formulation of sediment transport and underwater slope slumping

In the Colorado River the Glen Canyon dam is located. The Glen Canyon dam is constructed in the Colorado river for the production of electricity. Due to the dam, nowadays only a fifth of the pre-dam sediment volume flows into the Colorado River through the Glen Canyon dam and the two major tributaries, the Paria River and the Little Colorado...

Improving the Acoustic Absorption of Vertical Greening Systems

Noise pollution is a growing health concern in cities, especially in busy streets with parallel reflective facades, known as urban street canyons. Here, high flows of vehicular traffic generate a broadband noise, with high noise levels in the low-frequency (LF) spectrum. In the canyons, noise decays slowly due to multiple reflections. To counter...

Urban Morphological Analysis for Wind Potential

Wind has a profound impact on the meteorological and environmental conditions in cities. And so, by understanding wind flow behaviour within the urban environment, we can use the increasingly available open data to contribute to the design of healthy cities. This Master’s thesis presents a methodology to compute urban morphological parameters...

Erosion côtière au Cap Lopez, Gabon, due à un canyon sous-marin

Analysis of the effect of a submarine canyon on the coastal erosion near Cap Lopez, Gabon, using mathematical modelling