Multiple Arrangements Research Articles

Shape Optimization for Lithium-Ion Battery with Porous Electrodes

In this presentation, we introduce a gradient-based shape optimization framework to design porous electrodes for maximum energy storage. Lithium-ion batteries are becoming an increasingly important energy source and storage device. Large surface area that advocates high reaction rates often leads to small porosities that deteriorate electrochemical transport, which significantly restricts ion penetration depth, limiting the material utilization in planar electrodes. Consequently, architected electrodes are required to optimize performance.We consider a model with two materials, namely porous electrode and pure electrolyte. Density-based topology optimization with continuous material volume fraction has previously been implemented on lithium-ion battery system for both half-cell and full-cell model to maximizes its energy storage. Despite the capability of producing complex interdigitated structures, an appropriate penalization scheme for intermediate materials is required for the optimizer to provide near binary designs. Setting up such a penalization is often time-consuming due to the large number of design-dependent variables that affect the forward model differently. Alternatively, the shape optimization approach used in this work produces binary designs naturally by morphing conformal meshes, circumventing inaccuracies associated with fuzzy interfaces. Shape sensitivities are computed via the adjoint method and leveraging automatic differentiation. The optimization problem is solved using a nonlinear programming technique.In this presentation, we perform shape optimization on a half-cell model to maximize its energy storage when a fixed charging current is applied. We study multiple arrangements of physical parameters and compare their performance against a monolithic electrode. Both 2D and 3D results are presented.

Theoretical analysis of using multiple borehole heat exchangers for production of heating and cooling energy in shallow geothermal reservoirs with underground water flow

In this work the feasibility of using the double-U borehole heat exchangers (BHE) in multiple arrangements for production of heating and cooling energy has been investigated.Theoretical case studies are given for a few hypothetical lithological cases corresponding to the lithology that can be found in City of Zagreb. The results show interference between the borehole heat exchangers and limits of use of shallow reservoir with respect to slow convection and loss of accumulated energy in the reservoir. Special emphasis is placed on the description of the groundwater flow determined by the parameters of the shallow geothermal reservoir, such as permeability, water saturation, thermal conductivity, specific heat capacity and soil density, topography, precipitation, etc. Simulations have been performed in FeFlow coupled with Python user-scripts for individual control of the BHE’s, and the surface equipment is modelled using RES2GEO. To assess the accuracy of numerical predictions in simulating thermal responses, FeFlow software was utilized to conduct Thermal Response Tests (TRT) for individual Borehole Heat Exchangers (BHEs). These numerical results were then juxtaposed with empirical TRT data collected from a site near Velika Gorica, a town within the City of Zagreb. For each case simulation is done for one year with one hour resolution. The temperature distribution analysis highlights notable differences between scenarios, where the temperature field with lower permeability experiences significant variations, particularly near the BHE. Here, temperatures can soar to 20 °C during cooling periods and plummet to 4 °C in heating seasons. These fluctuations cause overheating and subcooling of the reservoir, impairing the heat pump’s efficiency and necessitating increased electricity consumption. By using Multivariate linear regression and Multi-layer perceptron regressor method, the main parameter for determination of COP of ground source heat pump. The analysis reveals that the majority of errors fall within the range of ± 5 %, although the MLA prediction method exhibits slightly more frequent errors. Additionally, the R2 scores demonstrate strong performance: the MLA procedure achieves 0.95 for heating and 0.99 for cooling, while the MLP procedure attains 0.99 for both heating and cooling phases.

Poetic imagery in L. Tolstoy’s Resurrection [Voskresenie

The article examines three principal devices of L. Tolstoy’s poetics in the novel Resurrection [Voskresenie]: metaphorization, contrasts and oppositions, and repetition and rhetorical climax. Repetition of certain fragments marks a turning point in the plot, as well as a return to the true nature of things, with multiple arrangements gradually intensifying to amplify the effect. The use of such devices can be observed in the metaphorization of nature which accompanies transformations of the male and female protagonists, for example, in the description of the garden with lilac bushes and the nightingale, the ice breaking on the river, or a sweltering day on the train and in the city. The repeated images conjure up parallels between the fragments describing the characters’ falling in love and committing a sin, as well as between the scenes of train journeys — to the army and to the prison camp. The characters’ intellectual and spiritual development is expressed through tropes and repetitions of motifs and sounds, which shifts the focus from the ideological to the poetic dimension, and helps create new images that complement the narration’s ideological foundation.

Evaluation of Buffel Grass Forage Production, Soil Microbial Biomass, and Enzymatic Activity in Silvopastoral Systems

The adoption of silvopastoral systems enables the achievement of sustainable intensification using multiple arrangements and species in the same area. This study aimed to evaluate the forage production of buffel grass and determine soil microbial biomass and enzymatic activity in two arrangements of a silvopastoral system. The study design was a randomized block with four replicates using a 2 x 4 factorial arrangement. The factors were two arrangements of the silvopastoral systems (buffel + Eucalyptus urograndis = SPS1 and buffel + pigeon pea + E. urograndis = SPS2) and four distances from the E. urograndis trees (2, 4, 6, and 8 m). Soil sampling was carried out at 0–5, 5–10, and 10–20 cm depths to evaluate microbial nitrogen (Nmic) and carbon (Cmic), while the activity of β-glucosidase and urease enzymes was evaluated at 0–5 and 5–10 cm. Buffel grass in the SPS1 showed higher canopy height, total dry mass, and root mass values. In SPS1, the highest total dry mass (3290.7 kg·ha−1) was observed at 8 m from the trees. At a 5–10 cm depth, Cmic was higher at 2 m than 8 m from the trees. The highest value of Nmic was found at 5–10 cm, at a distance of 2 m. The SPS2 showed a higher Nmic than the SPS1 at the 10–20 cm depth. The β-glucosidase activity was higher at a distance of 2 m in SPS1 at 0–5 and 5–10 depths. Urease activity was lower at 8 m at both depths. Thus, we observed the highest values of root-and-shoot biomass of buffel grass in SPS1 system at 8 m from the E. urograndis trees. However, the soil microbial response indicated that the intensification using tree, legume and grass in silvopastoral systems increased soil microbial activity.

Perceived similarity as a window into representations of integrated sentence meaning.

When perceiving the world around us, we are constantly integrating pieces of information. The integrated experience consists of more than just the sum of its parts. For example, visual scenes are defined by a collection of objects as well as the spatial relations amongst them and sentence meaning is computed based on individual word semantic but also syntactic configuration. Having quantitative models of such integrated representations can help evaluate cognitive models of both language and scene perception. Here, we focus on language, and use a behavioral measure of perceived similarity as an approximation of integrated meaning representations. We collected similarity judgments of 200 subjects rating nouns or transitive sentences through an online multiple arrangement task. We find that perceived similarity between sentences is most strongly modulated by the semantic action category of the main verb. In addition, we show how non-negative matrix factorization of similarity judgment data can reveal multiple underlying dimensions reflecting both semantic as well as relational role information. Finally, we provide an example of how similarity judgments on sentence stimuli can serve as a point of comparison for artificial neural networks models (ANNs) by comparing our behavioral data against sentence similarity extracted from three state-of-the-art ANNs. Overall, our method combining the multiple arrangement task on sentence stimuli with matrix factorization can capture relational information emerging from integration of multiple words in a sentence even in the presence of strong focus on the verb.

Alternative Splicing Outcomes Across an RNA-Binding Protein Concentration Gradient

Alternative splicing (AS) is a dynamic RNA processing step that produces multiple RNA isoforms from a single pre-mRNA transcript and contributes to the complexity of the cellular transcriptome and proteome. This process is regulated through a network of cis-regulatory sequence elements and trans-acting factors, most-notably RNA binding proteins (RBPs). The muscleblind-like (MBNL) and RNA binding fox-1 homolog (RBFOX) are two well characterized families of RBPs that regulate fetal to adult AS transitions critical for proper muscle, heart, and central nervous system development. To better understand how the concentration of these RBPs influences AS transcriptome wide, we engineered a MBNL1 and RBFOX1 inducible HEK-293 cell line. Modest induction of exogenous RBFOX1 in this cell line modulated MBNL1-dependent AS outcomes in 3 skipped exon events, despite significant levels of endogenous RBFOX1 and RBFOX2. Due to background RBFOX levels, we conducted a focused analysis of dose-dependent MBNL1 skipped exon AS outcomes and generated transcriptome wide dose–response curves. Analysis of this data demonstrates that MBNL1-regulated exclusion events may require higher concentrations of MBNL1 protein to properly regulate AS outcomes compared to inclusion events and that multiple arrangements of YGCY motifs can produce similar splicing outcomes. These results suggest that rather than a simple relationship between the organization of RBP binding sites and a specific splicing outcome, that complex interaction networks govern both AS inclusion and exclusion events across a RBP gradient.

Millimeter wave array-HIS antenna for imaging applications

The combination of a patch array antenna with a High Impedance Surface (HIS) metasurface at mmWave frequencies has been studied. The antenna is intended for a collision avoidance imaging application, which will help blind or visually impaired people in their daily lives. A compact and cost-effective uniplanar design, operating in the mmWave unlicensed frequency band (24.05–24.25 GHz), has been reached. Multiple arrangements and dispositions of the HIS unit-cells with the array have been explored in order to improve the radiation parameters of the basic design. Both, the basic array and the array-HIS combination, have been manufactured using laser micromachining. Prototypes have been measured in an anechoic chamber and measurement results have been confronted with the simulation ones in terms of bandwidth and radiation properties. A comparison with the state-of-the-art antennas at 24 GHz has been performed to endorse the achievements of this work.

The effect of spoilers on flow around tandem circular cylinders

Examining the flow characteristics around the cylindrical elements, such as offshore (submarine) pipelines which can be used in single or multiple arrangements, has a prominent place in fluid mechanics. The use of spoilers for self-embedding of these structures has been a subject that researchers have studied for many years. In this study, (a) the flow around a cylinder without and with a spoiler and (b) the effect of adding spoiler(s) to the tandem cylinders on the flow was experimentally investigated. In these experiments, where the ratio of the distance between the cylinders to the cylinder diameter is 2, the Reynolds number is 14000, which remains in the subcritical region. Four experiments were performed: the smoke-wire method was used for flow visualization, aerodynamic force measurement, velocity measurement by hot-wire anemometer, and pressure measurement to determine the pressure distribution on the cylinders. Pressure, velocity, and force results were recorded with the time histories in this study for the first time. Experimental studies show that when a spoiler is added to a single cylinder, an opposing lift force acts on that and the drag force increases due to the enlargement of the low-pressure region at the wake of the cylinder. In a tandem situation, when the upstream cylinder has a spoiler, no drag force acts on the downstream cylinder. The forces exerted on the upstream cylinder are not affected by whether the downstream cylinder has a spoiler. In the case of the downstream cylinder with the spoiler, the fluctuations in the aerodynamic forces of the upstream cylinder decrease owing to the downstream cylinder with the spoiler. The force fluctuations are more in the downstream cylinder, and unlike other tandem and single-cylinder cases, the vortex shedding becomes complex.

Biological, morphological, and molecular characterization of the baculovirus PlxyMNPV_LBIV-11, and its virulence towards Plutella xylostella, Trichoplusia ni, and Spodoptera frugiperda larvae.

PlxyMNPV_LBIV-11 is an alphabaculovirus strain, isolated from Plutella xylostella larvae. This work characterized this strain at a biological, morphological, and molecular level to evaluate its similarity with other baculoviruses. Its ultrastructure showed a multiple arrangement of nucleocapsids within enveloped virions, all occluded within large cubical polyhedra. PlxyMNPV_LBIV-11 showed infectivity on the Hi5 and Sf9 cell lines, despite these being from heterologous origin. This in vitro infectivity was observed using either BVs or by transfection with genomic DNA. Restriction fragment patterns of PlxyMNPV_LBIV-11, using the enzymes EcoRI, BamHI and HindIII, showed a high relationship with those patterns shown by AcMNPV, except for one or two differential bands with each enzyme. Sequences of core genes lef-8 and lef-9 and the conserved polh gene showed identities ranging from 98 to 100% when compared with those of AcMNPV. Somewhat lower was the sequence identity of the gp64 gene (94%) as compared with those of AcMNPV and PlxyMNPV_CL3, which might be related to the difference in virulence. Besides, the presence of this gene in PlxyMNPV_LBIV-11 indicates that it belongs to group 1 of alphabaculoviruses. A phylogram was estimated with the core and conserved gene sequences, corroborating its high relationship with AcMNPV and PlxyMNPV_CL3. Bioassays were performed with P. xylostella larvae reared on a meridic diet, whose LC50 values indicated lower virulence than AcMNPV when tested against P. xylostella, Spodoptera frugiperda, and Trichoplusia ni larvae. Its virulence against S. frugiperda was only seven times lower than AcMNPV. Its potential as a biological control agent is discussed.

Informality on the rise: Dissecting quasi-formal employment in the EU

AbstractIn spite of a growing body of literature on quasi-formal employment in the European Union (EU), there is still limited knowledge regarding the exact functioning of this illegal employment scheme. To fill this gap, we report data from the 2019 Special Eurobarometer on undeclared work, which reveals that 30.1% of European workers have higher income from employment than reported to tax authorities. Explicitly, 2.6% of registered dependent employees are entitled to cash top-ups to the official wage, for 7.8% of them the amount of supplementary payments depends on the work efforts, whereas 9.2% receive informal remuneration under multiple arrangements. In addition to these ‘regular recipients’, we also found that 10.5% of employees in the EU can be classified as ‘sporadic quasi-formal workers’. Besides showing that wage underreporting is far more pervasive than previously assumed, the study also offers a more nuanced insight into different manifestations of this illicit practice in the EU. Results of a two-level random intercept multinomial logit model reveal that women are less likely to receive fixed and variable cash-in-hand payments, whereas older individuals have a lower propensity to receive work-time-related income. The analysis also highlights that professionals, service sector employees, manual job workers and individuals whose jobs require travelling are more prone to variable wages compared to the rest of the population. Given a modest success in combating the phenomenon to this date, these findings will be particularly valuable for policymakers in their endeavours to devise tailored policy measures.

Quantum dimer model on fullerenes: Resonance, scarring, and confinement

The earliest known examples of quantum superposition were found in organic chemistry -- in molecules that `resonate' among multiple arrangements of $\pi$-bonds. Small molecules such as benzene resonate among a few bond arrangements. In contrast, a large system that stretches over a macroscopic lattice may resonate among an extensive number of configurations. This is analogous to a quantum spin liquid as described by Anderson's resonating valence bond (RVB) picture. In this article, we study the intermediate case of somewhat large molecules, the C$_{20}$ and C$_{60}$ fullerenes. We build a minimal description in terms of quantum dimer models, allowing for local resonance processes and repulsion between proximate $\pi$-bonds. This allows us to characterize ground-states, e.g., with C$_{60}$ forming a superposition of 5828 dimer covers. Despite the large number of contributing dimer covers, the ground state shows strong dimer-dimer correlations. Going beyond the ground state, the full spectrum of C$_{60}$ shows many interesting features. Its Hilbert space is bipartite, leading to spectral reflection symmetry. It has a large number of protected zero-energy states. In addition, the spectrum contains many scar-like states, corresponding to localized dimer-rearrangement-dynamics. Resonance dynamics in QDMs can manifest in the behaviour of defects, potentially binding defects via an effective attractive interaction. To test this notion, we introduce pairs of vacancies at all possible separations. Resonance energy reaches its lowest value when the vacancies are closest to one another. This suggests confinement of monomers, albeit within a finite cluster. We discuss qualitative pictures for understanding bonding in fullerenes and draw connections with results from quantum chemistry.

Obstacles Preventing the Off-Site Prefabrication of Timber and MEP Services: Qualitative Analyses from Builders and Suppliers in Australia

Limited empirical and qualitative studies focus on the detailed processes and obstacles for coordinating off-site prefabrication between builders and suppliers. This research aims to identify and address the obstacles that currently prevent the further expansion of off-site prefabrication, with a research scope on timber and mechanical/electrical/plumbing (MEP) services in construction projects. The focal point of this research is to highlight their obstacles. A total of forty interviews were conducted and analyzed from four builders’ organizations and four suppliers’ organizations to ascertain their obstacles in coordinating the practice of off-site prefabrication. The results found the builder’s obstacles were sustainability, quality assurance (QA), mass production, CAD/BIM, technological support, commercial arrangements, system building, buffering in supply, schedule monitoring, productivity, flexibility, engagement, risks, and multiple supply arrangements. The supplier’s obstacles were design, financing and subcontracting, coordination, recognized practices, risks, multiple supply arrangements, and constraints. Moreover, the builders and suppliers had identified some ways to harmonize off-site prefabrication of timber. Some examples of timber prefabrication technology include joinery, doors and/or windows, structural floor/wall/roof frames, partitions, trusses, stairs, balustrades, and others. MEP services with in situ construction comprise the use of power sources and working coordination. The most important outcome of this investigation is that these obstacles can be addressed through collaboration and coordination. This is because there is a traditionally a lack of collaboration amongst builders and their suppliers. Furthermore, there is a lack of coordination between them in general. The research contributes to the improved timber and MEP services collaboration and coordination in off-site prefabrication, which can be referred to by other approaches of modular construction.

Effects of Splitting Airfoil’s Aspect Ratio on the Control of Separation and Loss Distribution in a Distortion Generator

The effects of aspect ratio (AR: opposite diameter to width) reduction on the total pressure loss distribution of horizontally arranged splitting airfoils are investigated experimentally and numerically. The array arrangement of airfoils is proposed as a novel distortion generator mechanism. The upgrade feasibility study of the single airfoil loss repeatability in combined pattern was the aim of the present research. Modification of 90° splitting airfoil as a representative of the airfoils category with AR > 1 was a corrective approach to eliminate or delay the downstream wake axis rotation destructive effects on the combined loss predictability. The results of the modified airfoil (single and multiple arrangements) wake simulations based on hybrid turbulence model demonstrate a good agreement with wind tunnel measurements. It was observed that the aspect ratio reduction below the limiting value of “1” for selected opening angle provides the quasi-2D behavior of downstream flow structure related to AR < 1 airfoil category along with relatively higher value of loss related to AR > 1 category. Elimination of the side separation for modified 90° airfoil and the resulting similarity of maximum loss lobes positioning in arrangement of airfoils lead to the reduction of combined flow structure complexity and the improvement of loss predictability. It has appeared that combined loss pattern of the triple arrangement of the airfoils can be reconstructed from dual arrangement, and it can be reproduced from a single pattern in a hierarchical process. Concerning the maximum loss coefficient “values,” an overprediction of velocity recovery rate was observed in simulation results at the fully developed wake region that led to approximately 15% lower maximum loss values in comparison with the experiments.

Understanding a lower limb length inequality in your child

This testimony tells the story of alittle boy with leg length inequality. From his complex medical course to the long term follow-up, from the emotions felt in front of this diagnosis to the multiple arrangements of the family life, wetake the measure of the tireless work of accompaniment led by his parents.

Plural Policing in Papua New Guinea: More Than the Sum of Its Parts?

Scholars increasingly acknowledge that policing involves multiple actors and diverse institutional arrangements. Although the global expansion of private security has prompted much of the current interest in plural policing in the Global North, relatively little attention has been paid to this phenomenon in the Global South despite the manifestly plural character of policing in many such countries. This article examines plural policing in Papua New Guinea (PNG) in the Southwest Pacific. Policing in PNG involves a bewildering array of different actors and institutional forms, ranging from transnational police to unofficial urban settlement committees. Investigating the shifting pattern of pluralization in the context of broader structural changes and the intersections between different providers illuminates how policing actually works in this socially diverse nation, as well as highlighting some of its implications for state and society in this understudied part of the world.

Flash Smelting Settler Design Modifications to Reduce Copper Losses Using Numerical Methods

A mathematical modeling approach was used to test different design modifications in a flash smelting settler to reduce the copper losses in slag, which is economically disadvantageous for copper processing using the pyrometallurgical route. The main purpose of this study was to find ways to reduce copper losses in slag by improving the settling and coalescence of copper matte droplets, in particular, the smallest droplet sizes of ≤100 µm. These improvements inside the flash smelting (FS) settler were targeted through different settler design modifications. Three different design schemes were tested using the commercial computational fluid dynamics (CFD) software, Ansys Fluent. These settler design modification schemes included the impact of various baffle types, positioning, the height inside the settler, and settler bottom inclinations. Simulations were carried out with and without coalescence and the results were compared with normal settler design. The results revealed that the settling phenomenon and coalescence efficiency were improved significantly with these design modifications. It was concluded that a single baffle design was optimal for reducing copper losses and increasing coalescence efficiency instead of using multiple baffle arrangements. The top-mounted baffle outperformed the bottom-mounted baffle and inclined settler design.

Tuning and sensing with Korsakow: the ecocritical potentials of multilinear nonfiction

ABSTRACT The world is precarious and changing, yet we continue to find ways to order and understand these entanglements; taming the complexity out there. In linear documentary, shots by necessity need to be ordered and fixed by the edit, whilst some shots do not make the cut at all. Due to the affordances of the online network, multilinear documentary allows multiple possible arrangements of audiovisual nonfiction content without the time restrictions to leave content out. How can we conceive an audiovisual nonfiction practice which senses the entanglements of the fluxing world around us? Over the past six years I have been experimenting with the affordances of the Korsakow authoring system to make multilinear nonfiction. Korsakow works with fragments of audiovisual content and allows multiple possible relations to form between parts. Through the development of two major projects, I have found Korsakow offers a way of maintaining the world in fragments as soft multiple relations, reflecting an ecocritical world as entangled continually doing things. By sketching out the practice I developed through this body of work, I will propose that Korsakow provides an audiovisual nonfiction tool to tune into and sense the indeterminate patterns and rhythms of the world.

Endovascular catheter manometry reliability: a benchtop validation study.

Catheter manometry is used frequently in neuroendovascular surgery for assessing cerebrovascular pathology. The accuracy of pressure data with different catheter setups requires further validation. In a silicone human vascular model with a pulsatile pump, pressure measurements were taken through multiple arrangements of 2 guide catheters and 6 microcatheters. The systolic pressure, diastolic pressure, mean pressure, pulse pressure, and area under the curve of the waveform were recorded through catheters with controls at arterial blood pressure ranges. Linear regression modeling was performed, correlating transduction area and relative pulse pressure. Thresholds for acceptable accuracy were ≥ 90%. Mean pressure demonstrated < 4% variation between all 24 catheter setups and respective controls. A strong linear correlation (r2 = 0.843, p < 0.0005) between microcatheter transduction area and relative pulse pressure with a threshold of 0.50 mm2 was seen (i.e., 0.031-inch inner diameter [ID]). For guide catheters with indwelling microcatheters, there was also a strong linear correlation (r2 = 0.840, p < 0.0005) of transduction area to pulse pressure. The guide catheters with obstructing microcatheters required a transduction area over fourfold higher compared with unobstructed microcatheters (2.21 mm2 vs 0.50 mm2). Mean pressure measurements are accurate through microcatheters as small as 0.013-inch ID. Pulse pressure and waveform morphology may require a microcatheter ≥ 0.031-inch ID to achieve 90% accuracy, although the 0.027-inch ID microcatheter reached 85% accuracy. A 0.070-inch guide catheter with a microcatheter ≤ 0.042-inch outer diameter (e.g., Marksman 0.027-inch ID or smaller) allows accurate transduction of pulse pressure. Further validation of these benchtop findings is necessary before application in a clinical setting.

Video-Island

This practice-based research focuses on the film Ínsula (Insular in English) to explore ways of conducting, intertwining, and assembling performing bodies with audio-visual performance, through the creation of original dispositifs. It expands relations between different types of performance with cinematographic methodology and unique approaches to editing, to suggest a new term, “cine-performance,” centered on the action and modification of the performing body by the cinematographic apparatus. Performance is an embodied intervention in the world, an instrument for assembling / disassembling territories and languages, a visual and sound composition of the cinematic apparatus. Cine-performance is an expressive potential of the multiple compositions between bodily and audio-visual performance. Through it, live performance is embodied in image through audio-visual capture and the camera eye’s and the editing process’s reconfiguration of the human body. Performances can be reassembled on a single screen, or through multiple arrangements on a variety of screens. I therefore propose the construction of cinematic montage in spatial and temporal layers, which combines poetic potentialities between bodily and audio-visual performances. Cine-performance uses the language of cinema to expose and investigate the relationship between performance and its specific context (site, environment, historicity) in order to materialize in sound and image the most ephemeral and immaterial aspects of any action involving the body. And this relationship depends on a performing body that assembles and conceives of a cinematic enunciation within the performance itself, which activates and calls upon cinematic genres to transduce performance into an audio-visual work.

Simulating Airflow Around Flexible Vegetative Windbreaks

AbstractVegetative windbreaks play an important role in reducing soil erosion and sand storms, which are widely applied in arid/semiarid regions. An optimal design of vegetative windbreaks is essential in aeolian engineering practice. In this study, three‐dimensional airflows around multiple arrangements of vegetative windbreaks were simulated using a modified Reynolds‐Average Navier‐Stokes (RANS)‐based computational fluid dynamics (CFD) model, based on which, optimal designs of vegetative windbreaks were discussed. We proposed a correction factor in the source terms of the momentum and turbulent transport equations representing the effects due to the vibration of the vegetative windbreaks, which was further calibrated using both simulated and wind tunnel experimental results. Moreover, a quantitative expression of the correction factors associated with structural parameters of vegetative windbreaks was established and verified. For optimal designs to reduce wind erosion, a suite of numerical experiments was conducted to find the optimal height, leaf area density, and vegetation fraction of the vegetative windbreaks under different free‐stream wind speeds. The results identified that under low free‐stream wind speed (6.4 m/s), the optimal parameters are 9.0 cm, 0.45 cm2/cm3, and 3.92%. Under moderate free‐stream wind speed (8.0 m/s), those optimal parameters are 12.4 cm, 0.47 cm2/cm3, and 3.92%. Under relatively high free‐stream wind speed (10.8 m/s), the optimal parameters are 12.4 cm, 0.47 cm2/cm3, and 8.00%. The results of the current study will aid in optimizing vegetative windbreak designs and preventing wind erosion in aeolian engineering.