Numerical modelling of the passive control of air pollution in asymmetrical urban street canyons using refined mesh discretization schemes, This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof...

Abstract Accurate positioning in urban canyons remains a challenging problem. To facilitate the research and development of reliable precise methods using multiple sensors canyons, we built multisensory dataset, UrbanNav, collected diverse, scenarios Hong Kong. The dataset provides multi-sensor data, including data from multi-frequency global navigation satellite system (GNSS) r...

A 3-D, unsteady, nonlinear, high-resolution model is used to estimate shelf/slope exchanges through Calvi Canyon (NW Corsica, Mediterranean Sea) in various regimes of stratification and wind patterns. To evaluate the alongshore and cross-shore fluxes within the canyon area as well as the water exchanges between the canyon and Calvi Bay, volume transports are computed at the sides of two closed,...

Earth analogues for Martian canyons. Steep-walled, amphitheater canyons on Mars have been invoked as evidence for underground water flow because of their similarities to seepage or sapping valleys/canyons on Earth. However, seepage canyon formation on Earth is speculative, particularly in basalt terrains (Lamb et al., 2006), and therefore analogies to Mars may be inappropriate. One of these Ear...

Mean wind profiles within a unit-aspect-ratio street canyon have been estimated by solving the three-dimensional Poisson equation for set of discrete vortex sheets. The validity this approach, which assumes inviscid dynamics away from boundaries and small nonlinear contribution to growth turbulent fluctuations, is tested series idealised realistic flows. In paper, effects urban geometry on accu...

A major portion of the Location-Based Services (LBS) market deals with applications involving in-car navigation systems. Many such LBS applications involve positioning in urban areas which contain high rise buildings. The Global Positioning System (GPS) is the most popular choice for navigating vehicles, primarily due to its autonomous positioning ability. Although GPS has good positioning accu...

Green walls are considered a sustainable and environmental technology for improving the local urban microclimate. The presented wind tunnel measurements reveal coupling effect of aerodynamic thermal resistance green in flat steep street canyons simplified neighborhood model. building ground surfaces set to conditions at series Richardson numbers (Ri) ranging from 0 2.07. induce flow due their h...

A successful urban planning and design solution ought to present a comfortable setting for its pedestrians inside urban canyons, because it is fundamental to encourage a good quality urban life and promote health and wellbeing of humans. Recent findings have demonstrated that microclimate inside urban canyons has substantial influence upon the outdoor thermal comfort at the street level .This s...