Binary nanodroplet collisions have received increasing attention, whilst the identification of collision outcomes and viscous dissipation mechanism remained poorly understood. Using molecular dynamics simulations, this study investigates binary over wide ranges Weber number ( We ), Ohnesorge Oh ) off-centre distances. Coalescence, stretching separation shattering are identified; however, bouncing, reflexive rotational reported for millimetre-sized not observed, which is attributed to...

The impact dynamics of water nanodroplets on flat solid surfaces was studied by molecular simulations over a wide range Weber numbers (We) and surface wettability (θ0), where θ0 is the Young contact angle. A phase diagram in parameter space We vs established accommodating eight outcomes noted final stage impact, with three them, holes rebound, partial-rebound splash, rebound for first time being identified reported. were classified into categories, i.e., non-bouncing, bouncing, splash....

Facing dataset quality problems, small target detection challenges, and computational resource constraints in the field of pest disease detection, we propose a comprehensive solution. First, high-quality data support for model training is provided by constructing specialized datasets to overcome problems inaccurate labels, lack sample diversity, insufficient coverage instances publicly available datasets. Second, challenge, introduces spatial pyramid pooling efficient local aggregation...

On a rectangular-ridged superhydrophobic surface, the contact time of rebounding-coalescing droplet is for first investigated via lattice Boltzmann method simulations, where caused by an impinging coalescing with adhesive droplet. The simulation results show that at constant initial radii droplets, R0, and various R1, rebounding–coalescing droplets depends not only on impact condition but also surface condition. Under conditions, is, increased Weber numbers We = 1–30, gradually reduced, then...

Nanodroplet impacts have attracted significant attention, while the effect of surface wettability on contact time is evaluated poorly. Utilizing molecular dynamics simulations, current work with a special focus studies nanodroplets impacting solid surfaces in wide range static angles (θ0 = 105°–175°) and Weber number (We 0.1–200). The complete trends restitution coefficient are analyzed reported for first time. For θ0 > 160°, four different regimes identified as function number. 110°...

Photovoltaic (PV) power generation is a form of clean, renewable, and distributed energy that has become hot topic in the global field. Compared to terrestrial solar PV systems, floating photovoltaic (FPV) systems have gained great interest due their advantages conserving land resources, optimizing light utilization, slowing water evaporation. This paper provides comprehensive overview recent advancements research application FPV systems. First, main components as well disadvantages are...

Efficient droplet shedding from surfaces is fundamentally interesting and important due to its promising potential in numerous applications, such as anti-erosion, anti-icing, self-cleaning. In this work, the bouncing dynamics of head-on impact two nanodroplets on superhydrophobic are investigated through molecular simulations. Three patterns, including regular-coalescence-bouncing, coalescence-hole-bouncing, ring-bouncing, identified at a wide range impacting Weber numbers. For three time...

Intense interest has been given to the fabrication of micro-through-holes with smaller tapering and higher aspect ratios in engineering ceramics due their wide range applications MEMS aerospace. A semi-water-immersed laser micro-trepanning (SWILT) scheme is proposed investigated this paper alumina as target material, its performance assessed compared direct trepanning method. Relevant processing parameters influencing process are explored through an orthogonally designed experiment, effects...

Rising nanoscale technologies arouse interest in investigating the impact dynamics of nanodroplets. In this work, nanodroplets on solid spheres is investigated by molecular simulation method, to comprehensively report outcome regimes and reveal curvature effect, wide ranges Weber numbers (We) from 1.5 235.8, diameter ratios (λ) 0.3 5, contact angles (θ) 105° 135°. Five outcomes are identified, including deposition, bouncing, splash, covering, dripping. The former three found high ratio range...

The good indoor light environment and comfort of the teaching space are very important for students’ physical mental health. Meanwhile, China advocates energy conservation emission reduction policies. However, in order to obtain lower building consumption, higher thermal comfort, daylighting, architects use performance simulation software repeatedly simulate refine, which is time-consuming difficult best results from three performances. Given this problem, we constructed design framework...

In this paper, the one-dimensional consolidation of soft ground is studied with impeded boundaries under a depth-dependent ramp load. First, an analytical solution obtained by using method separation variables and orthogonal relations infinite series. A computational program then developed according to solution. Lastly, examples are analyzed program. The can be treated as completely drained boundary when parameter greater than 100 not affected load duration. effects on average degree depend...

ABSTRACTThe complex electricity transmission process and transfer passenger demand in the rail transit system make it challenging to formulate optimal timetables train speed profiles meet needs of system. This study optimizes timetable energy conservation service quality cross-mode during different operation periods. Firstly, based on spatiotemporal travel data passengers, train-time matrix is proposed construct a bi-objective optimization model (BOOM) that incorporates total consumption...

As testing the marine large-scale low-speed two stroke engine to determine performance map for different working conditions costs too much time and money. So prediction of exhaust emissions modelling is developed define how inputs affect outputs. The were measured loads conditions. Using Radial Basis Function Neural Networks (RBFNNs) model, a diesel was predicted. According results, network sufficient all emission In network, speed (N), load (L), fuel flow rate (FFR), air mass (AMR),...

On nanopillar-arrayed superhydrophobic surfaces, the contact time of oblique nanodroplet impacts is for first investigated via molecular dynamics simulations. Here, are triggered by nanodroplets impacting surfaces under various impact angles, α. The simulation results show that owing to non-axisymmetry spreading factors on always less rather than smooth same angles. As angle increased from 5° 65°, is, different conditions, more remarkable as α > 35° instead < at low, medium,...

In consideration of the fact that most ships adopt prevailing static hydrocyclone slop treatment system with a low efficiency, present research tries to design dynamic ship-born bilge water system. By use high-speed rotation cyclone wall, enables different components oily separate due centrifugal forces generating during process. According characteristics slop, structure parameters for single separator are designed. And in order realize real-time monitoring system's working condition,...

In view of the resonance phenomenon caused by LCL filter introduced voltage pulse width modulation (PWM) rectifier as well inability traditional PI adjustment to meet needs different load changes, this article proposed a segmented synergetic control strategy for based on proportional-integral manifold form strategy. First all, controller was constructed; secondly, particle swarm optimization used optimize parameters under conditions; thirdly, optimized were establish trigger database, taking...

From design and management, the significance main ways of ship energy-saving is proposed. The designer should inject low carbon idea into design. officers on board not only ensure safe operation vessel, but also strengthen maintenances, work hard to keep it in good condition. costs can be reduced energy saved.

The flow refueling location model is adopted to describe the traffic network considering shortest and second paths.Three objective functions of electric vehicle charging station placement optimal are defined maximize captured flow, minimize investment cost, average voltage deviation.Then, non-dominated sorting genetic algorithm-Ⅱ used solve multi-objective model.With example IEEE 33node power distribution 25-node network, basic characteristics presented solving method illustrated.