A Computational Study on Spray Dispersal in the Wake of an Aircraft

Ryan, Sydney D.; Gerber, A. G.; Holloway, Gordon

doi:10.13031/trans.56.10022

Cited by 5 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The most common approach to modelling spray drift is the Eulerian-Lagrangian method [9,20,115], which solves the problem in two steps. The first step is to solve the Navier-Stokes equations for the continuous phase, which is usually the air.…”

Section: Modelling Considerations In Cfd Prediction Of Spray Driftmentioning

confidence: 99%

“…Opposite results are also found from measurements [7] where drift from the ground mist blower is greater than the aerial application due to smaller droplets and greater initial horizontal droplet velocity. Meanwhile, drift from the aerial applications is significantly influenced by the effect of wingtip vortices [8,9]. For most arable and vegetable crops, the air-jets tend to be located above the crop producing a downward flow, while an upward flow is applied to fruit and tree crops by locating the sprayer within the canopy [10].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Fluid Dynamic Approaches for Prediction of Spray Drift from Ground Pesticide Applications: A Review

et al. 2021

View full text Add to dashboard Cite

Spray drifts have been studied by mathematical models and computer simulations as an essential complement to lab and field tests, among which are fluid dynamic approaches that help to understand the transport of spray droplets in a turbulent atmosphere and their potential impacts to the environment. From earlier fluid mechanical models to highly computational models, scientific advancement has led to a more realistic prediction of spray drift, but the current literature lacks reviews showing the trends and limitations of the existing approaches. This paper is to review the literature on fluid-mechanical-based modelling of spray drift resulting from ground spray applications. Consequently, it provides comprehensive understanding of the transition and development of fluid dynamic approaches and the future directions in this research field.

show abstract

Section: Modelling Considerations In Cfd Prediction Of Spray Driftmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fluid Dynamic Approaches for Prediction of Spray Drift from Ground Pesticide Applications: A Review

et al. 2021

View full text Add to dashboard Cite

show abstract

Aerial treatments in forest protection – research methodology

Rowiński

2014

Folia Forestalia Polonica

View full text Add to dashboard Cite

Treatment effectiveness in forest protection against harmful insects depends not only on pesticide efficacy of the product applied, but also on a number of other factors including assurance that a given insecticide reaches the pest living in the canopy. In the treatments with the use of aerial equipment (silva-aerial) it is advisable to consider species and age diversity of protected tree stands. The paper presents research methodology on the assessment of spray structure and density, penetration of spray droplets into the canopy as well as a degree of coverage and incorporation in tree crowns. The methodology proposed takes into account characteristics of the forest area studied and its surroundings, as well as the parameters and equipment of the measurement line. There were determined: operation requirements for the aircraft and its test and registration equipment as well as demands on pilot qualifications, flight performance on the measurement line and weather conditions allowing for conducting test trials. In the paper, there are presented a set of values and mathematical formulas needed for the analyses. Taking into account ecological threats, there were included the methods on evaluation of spray drift of the liquid distributed over the forest.

show abstract

CFD Analysis of the Fluid Particles Distribution by Means of Aviation Technique

Seredyn

Dziubiński

Jaśkowskí³

2018

Transactions on Aerospace Research

View full text Add to dashboard Cite

The article describes a computational study, using CFD models, of droplet spray dispersal in the wake of a ‘Turbo Kruk’ airplane up to 500 m downstream. The CFD Reynolds-averaged Navier-Stokes (RANS) models use a Lagrangian (droplet phase) and Eulerian (fluid phase) procedure to predict the droplet trajectories trough the turbulent aircraft wake. The methods described in the work have the potential to improve current models for aerial spraying and will help in the development of new spraying procedures. In this study, the CFD models are used to describe the phenomenon of sprays released from atomizers mounted on the plane. A parametric study of the aircraft model examines the effects of crosswind on the aircraft’s vortex structures and the resulting droplet trajectories. The study shows, that such influence is underestimated in the current models. A comparison of the present results to AGDISP predictions is provided.

show abstract

A Computational Study on Spray Dispersal in the Wake of an Aircraft

Cited by 5 publications

References 0 publications

Fluid Dynamic Approaches for Prediction of Spray Drift from Ground Pesticide Applications: A Review

Fluid Dynamic Approaches for Prediction of Spray Drift from Ground Pesticide Applications: A Review

Aerial treatments in forest protection – research methodology

CFD Analysis of the Fluid Particles Distribution by Means of Aviation Technique

Contact Info

Product

Resources

About