Modelling the Effects of a Vegetation Barrier on Road Dust Dispersion

Šíp, Viktor; Beneš, L

doi:10.4028/www.scientific.net/amm.821.105

Cited by 6 publications

(4 citation statements)

References 16 publications

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“…As in [20], logarithmic wind profile is prescribed at the inlet with u ref = 5 m/s at height y ref = 10 m. Roughness parameter z 0 is set to 0.1 m. The atmosphere is under weakly stable stratification (∂T /∂y = 0 K/m). For further details on the boundary conditions for the fluid flow and the pollutant equations see [20]. For the turbulence equations, boundary conditions and wall functions according to [14] are used.…”

Section: Methodsmentioning

confidence: 99%

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CFD Optimization of a Vegetation Barrier

Šíp

Beneš

2016

Lecture Notes in Computational Science and Engineering

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In this study we deal with a problem of particulate matter dispersion modelling in a presence of a vegetation. We present a method to evaluate the efficiency of the barrier and to optimize its parameters.We use a CFD solver based on the RANS equations to model the air flow in a simplified 2D domain containing a vegetation block adjacent to a road, which serves as a source of the pollutant. Modelled physics captures the processes of a gravitational settling of the particles, dry deposition of the particles on the vegetation, turbulence generation by the road traffic and effect of the vegetation on the air flow.To optimize the effectivity of the barrier we employ a gradient based optimization process. The results show that the optimized variant relies mainly on the effect of increased turbulent diffusion by a sparse vegetation and less on the dry deposition of the pollutant on the vegetation.

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Section: Methodsmentioning

confidence: 99%

“…In this paper we present a method for the evaluation of the effectivity of the barriers and for the numerical optimization of the barrier properties. The model presented here is based on the work [20], where the influence of the atmospheric conditions on the barrier efficiency was investigated.…”

Section: Introductionmentioning

confidence: 99%

CFD Optimization of a Vegetation Barrier

Šíp

Beneš

2016

Lecture Notes in Computational Science and Engineering

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“…Planting trees on the roadside can be a solution to decrease CO2 concentration on the roadside. Gromke and Ruck (2010), Janhäll (2015), Li, Lu, et al (2016), Šíp and Beneš (2016), Aini and Shen (2019) have shown that areas with trees have lower dispersion of traffic emissions than sites without trees. However, the existence of these trees must also be supported by a good design.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Shape of Tree Crowns to protect Air Quality on the Roadside from the CO<sub>2</sub> Dispersion produced by Transportation

Aini

Shen

Wikantiyoso

et al. 2023

IRSPSD International

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This research focuses on evaluating the shape of a tree's crown and its impact on CO2 dispersion from transportation. CO2 emissions from motor vehicles can quickly spread and cause poor air quality on the roadside. The design of tree planting is a way to control air quality by reducing CO2 dispersion. Therefore, the tree's crown shape is an essential element to consider when planting trees, as different crown shapes can have different effects on CO2 dispersion. Selecting the wrong shape for a tree's crown can have negative consequences for controlling CO2 dispersion on the roadside. To evaluate the impact of different tree crown shapes, this research examines five common shapes found in Surabaya city: round, umbrella, oval, conical, and columnar. The study area is created in 3D modelling using Sim Studio tools software. Computational fluid dynamics (CFD) analysis is then used to simulate the spread of CO2 emissions on the roadside. The simulation involves four scenarios that consider CO2 dispersion in 0°, 90°, 180°, and 270° wind direction. The last step of this research involves validating the data using correlation analysis. The results demonstrate that the shape of a tree's crown has a significant impact on CO2 dispersion. The oval, conical, and columnar shapes are the most suitable for planting along the roadside because they can effectively reduce the dispersion of CO2 emissions. In contrast, the round and umbrella shapes have the highest CO2 distribution and are unsuitable for planting along the roadside.

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“…The numerical modelling can help us to predict the transmission of the pollution and to understand its behaviour [1] and [2]. The core of this problem lies in a accurate fluid flow modelling and in analysis of the pollution behaviour [3].…”

Section: Introductionmentioning

confidence: 99%

Modelling of the Influence of Vegetative Barrier on Concentration of PM10 and PM2,5 from Highway

Řezníček

Beneš

2016

AMM

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The influence of different types of the vegetative barrier near a highway on dustiness was studied. Transport, dispersion and sedimentation of pollutants PM10 and PM2.5 emitted from the highway was numerically simulated. Mathematical model was based on the Navier-Stokes equations for turbulent fluid flow in Boussinesq approximation. The AUSM-MUSCL scheme in finite volume formulation on structured orthogonal grid was used.The influence of the shape of the barrier and of its obstructing properties on the concentration of pollutants was studied.

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Modelling the Effects of a Vegetation Barrier on Road Dust Dispersion

Cited by 6 publications

References 16 publications

CFD Optimization of a Vegetation Barrier

CFD Optimization of a Vegetation Barrier

Evaluation of the Shape of Tree Crowns to protect Air Quality on the Roadside from the CO<sub>2</sub> Dispersion produced by Transportation

Modelling of the Influence of Vegetative Barrier on Concentration of PM10 and PM2,5 from Highway

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