Article
Engineering, Civil
Xiaoran Fu, Jiahong Liu, Zhonggen Wang, Dong Wang, Weiwei Shao, Chao Mei, Jia Wang, Yan-fang Sang
Summary: In this study, the changes in infiltration characteristics of three green infrastructures (GIs) were simulated during a rain event in Xiamen, China. The maximum infiltration rate (MIR) and cumulative infiltration (CI) of permeable pavements, vegetative swales, and rain gardens were found to differ under different scenarios of permeable material thickness. Comparisons between GIs with and without barriers revealed that the MIR remained unchanged, while the CI varied with the depth to the impervious layer. Identifying the potential impacts of infiltration processes beneath GIs can be beneficial in urban stormwater management.
JOURNAL OF HYDROLOGY
(2023)
Article
Agronomy
Yanwei Fan, Wen Shi, Xiaoxia Shao, Changyan Zhang, Weifan Yin
Summary: The research indicated that the infiltration amount of film hole interference infiltration (FHII) significantly decreased, mainly influenced by soil texture, film hole diameter, and film hole spacing. The reduction volume of infiltration is in proportional relationship with the interfering time, with the proportional coefficient related to the diameter and spacing of the film holes.
IRRIGATION AND DRAINAGE
(2022)
Review
Environmental Sciences
Giasemi Morianou, Nektarios N. Kourgialas, George P. Karatzas
Summary: Orchards play a critical role in the global economy and environment, providing long-term productivity without replanting and better adaptability to extreme climatic conditions. However, climate change is posing new challenges to tree production and water supply. Drip irrigation, using comprehensive numerical models like HYDRUS 2D/3D, can save water and optimize irrigation management and design. This study reviews the applications of HYDRUS 2D/3D in simulating water dynamics, root uptake, and solute transport under drip irrigation in common tree crops, offering insights into its effectiveness and future challenges.
Article
Agronomy
Eva Hyankova, Michal Kriska Dunajsky, Ondrej Zednik, Ondrej Chaloupka, Miroslava Pumprlova Nemcova
Summary: The study found that using pre-treated wastewater for supplemental irrigation may have minimal impact on groundwater quality, especially under strict operating conditions. This is beneficial for the design and practical application of wastewater irrigation systems.
Article
Engineering, Civil
Zahra Jafari, Sayed Hamid Matinkhah, Mohammad Reza Mosaddeghi
Summary: In arid lands, efficient irrigation is crucial for managing limited water supplies and irregular precipitation events to ensure seedling establishment. This study used the HYDRUS-2D/3D software to simulate wetting patterns around reservoirs with different permeabilities and found that soil water content was highest near the reservoir and decreased with distance. The software also accurately simulated soil water content, showing high correspondence with measured data.
WATER RESOURCES MANAGEMENT
(2022)
Article
Engineering, Environmental
Yanwei Fan, Changyan Zhang, Hujun Wei, Wen Shi
Summary: The importance of enhancing rainwater infiltration to reduce urban waterlogging risk and improve the utilization of urban rainwater resources is highlighted. Through the use of the HYDRUS model, a mathematical model of soil water movement, the study examines the effects of a banded sand ditch pattern on soil infiltration rate. The findings indicate that the sand ditch pattern increases permeation and a reliable estimation model for soil infiltration rate is proposed.
WATER SCIENCE AND TECHNOLOGY
(2022)
Article
Agricultural Engineering
Lei Geng, Li Li, Wei Li, Chengfei Yang, Fanjia Meng
Summary: This study used an improved model to simulate water movement and root water uptake under drip irrigation conditions, and validated the results with sensor measurements. The model accurately predicted the movement and position of water in the substrate, providing a basis for soilless substrate culture under drip irrigation.
INTERNATIONAL JOURNAL OF AGRICULTURAL AND BIOLOGICAL ENGINEERING
(2022)
Article
Agronomy
Yanhui Jia, Wei Gao, Xiulu Sun, Yayang Feng
Summary: Mulch drip irrigation (MDI) technology effectively solves the problem of insufficient temperature accumulation during the pre-fertility period and facilitates efficient water and fertilizer supplementation in spring corn planting. This study investigates the impact of MDI technology on the water and salt environment of farmland, with simulated scenarios comparing MDI, shallowly buried drip irrigation (SBDI), and sprinkler irrigation (SI) under variable rainfall and initial salt content. The results indicate that water and salt distribution and variation in the soil are similar under MDI and SBDI, with the change near the drip tape mainly affected by irrigation and the soil between drip tapes correlated with irrigation and rainfall. The risk of secondary salinization is minimal with reasonable irrigation management in the West Liaohe Plain.
Article
Agronomy
Xu Dou, Haibin Shi, Ruiping Li, Qingfeng Miao, Jianwen Yan, Feng Tian, Bo Wang
Summary: Controlled drainage is an important measure to improve salinized soil in arid and semi-arid areas. This study found that a drainage depth of 50 cm during the growth period is optimal for sunflower cultivation in moderately saline soils.
AGRICULTURAL WATER MANAGEMENT
(2022)
Article
Environmental Sciences
Mahmoud Abdel-Sattar, Rashid S. Al-Obeed, Saad A. Al-Hamed, Abdulwahed M. Aboukarima
Summary: This study evaluated and modeled the water infiltration rate in clay soils under different tillage practices. The research found that tillage practices can significantly reduce the water infiltration rate into the soil, providing a theoretical basis for improving cumulative infiltration models. These findings support irrigation management and water conservation efforts in agriculture.
Article
Environmental Sciences
Xiaoyu Dong, Fucang Qin, Long Li, Zhenqi Yang, Yan Li, Yihan Wu
Summary: Studying the water infiltration process in hilly and gully areas of the Loess Plateau in China is crucial for understanding hydrological processes and controlling soil erosion. This research focuses on the simulation of water infiltration characteristics and movement patterns of sandstone slopes covered with thin layers of loess. The study reveals that the transition layer between loess and sandstone reduces water infiltration rate and affects the wetting front speed, thus impacting water infiltration ability. The Hydrus-1D model accurately simulates water content in the vertical infiltration process of sandstone covered by loess.
Article
Engineering, Environmental
Yanwei Fan, Liangjun Ma, Hujun Wei, Pengcheng Zhu
Summary: Vertical line source irrigation (VLSI) is an underground irrigation method suitable for deep-rooted plants. Understanding the characteristics of the soil wetting body of the VLSI is crucial for designing the irrigation system. Factors such as soil texture, initial water content, line source diameter, and line source length have significant impacts on the migration of the wetting front in VLSI.
Article
Environmental Sciences
Xiaoying Sun, Juxiu Tong, Cong Liu, Yanbao Ma
Summary: In recent years, agricultural non-point source pollution (ANPSP) has become increasingly prominent, with nitrogen playing a significant role. This study conducted traditional flooded irrigation (TFI) experiments in a paddy field and used HYDRUS-2D model to simulate nitrogen transport. The results showed that the model effectively simulated ponding water depth and NH4+-N concentrations, but had some discrepancies in simulating NO3--N concentrations.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Civil
Zhiqiang Zhang, Zijian Wang, Sheping Wang, Yanping Ding, Zhiming Yuan, Jinsuo Lu
Summary: The study introduced an enhanced seepage well (ESW) technology, which showed significantly better infiltration performance compared to conventional permeable pavement (PP) and conventional rainwater seepage well (CSW). ESW effectively enhances infiltration and water retention capacity, particularly showing good results under heavy rainfall intensities.
JOURNAL OF HYDRO-ENVIRONMENT RESEARCH
(2021)
Article
Environmental Sciences
Antonio Jesus Zapata-Sierra, Jose Roldan-Canas, Rafael Reyes-Requena, Maria Fatima Moreno-Perez
Summary: The study aims to calibrate and validate the Hydrus-3D model for moisture evolution in wet bulbs in stratified sanded soils with intensive pepper crop under drip irrigation. Experimental measurements of soil properties have been conducted, showing that including previous day data in simulations improves predictions. The Hydrus-3D model accurately reproduces the behavior of soil under greenhouse growing conditions and could be used for future irrigation strategies in intensive agriculture.
Article
Geosciences, Multidisciplinary
Seyed Mohammad Fattahi, Abbas Soroush, Ning Huang, Jie Zhang, Sona Jodari Abbasi, Yang Yu
Article
Geography, Physical
Ning Huang, Panli He, Jie Zhang
Article
Engineering, Chemical
Xin Yin, Ning Huang, Cong Jiang, Eric J. R. Parteli, Jie Zhang
Summary: This work is motivated by the lack of a model for the splash function associated with the collision of wind-blown sand grains onto an inclined granular surface. Numerical simulations using the Discrete-Element-Method (DEM) show that the effect of the bed slope on the splash function depends on the size of the impacting particle, which has implications for grain trajectories formative of ripples and dunes.
Article
Chemistry, Physical
Wei He, Ning Huang, Jie Zhang
Summary: The study reveals that the turbulent intensity of aerodynamic wall shear stress increases rapidly with the sand mass flux in particle-laden flow. Anomalies observed in sand-laden flow include an increase in power of aerodynamic wall shear fluctuation, an increase in the skewness of the probability density function, and a decrease in convective velocity. The local and spatio-drifting forces acting on the stochastic system of wall shear fluctuation in sand-laden flow differ, indicating significant variations in flow condition near the wall caused by sand streamers.
EUROPEAN PHYSICAL JOURNAL E
(2021)
Article
Environmental Sciences
Hongchao Dun, Ning Huang, Jie Zhang
Summary: Brick arrays are effective in reducing wind velocity and blocking sand intrusion, with an effective protection distance of 3-4 meters; building arrays increase near-surface wind velocity among buildings, resulting in less deposition of sand particles; solar panel arrays are similar to building arrays in most cases, but sand deposition on solar panels negatively affects energy utilization efficiency.
JOURNAL OF ARID LAND
(2021)
Article
Chemistry, Multidisciplinary
Hongchao Dun, Guowei Xin, Ning Huang, Guangtian Shi, Jie Zhang
Summary: Wind-break walls along the Lanxin High-Speed Railway II have been studied and proven to be effective in reducing wind damage to high-speed trains, but sand sedimentation on the leeward sides in the Gobi Desert could pose a threat to train safety. Different terrains along the walls exhibit varying rates and distributions of sand deposition, with proposed measures to prevent sedimentation.
APPLIED SCIENCES-BASEL
(2021)
Article
Physics, Multidisciplinary
Xinghui Huo, Hongchao Dun, Ning Huang, Jie Zhang
Summary: The coupling effects between the wind field, bed surface topology, and sand particle transportation lead to the formation of regular sand ripples. Despite numerous theoretical and numerical models established for studying aeolian sand ripples, none of them directly reproduces the 3D long-term development. The simplified bed surface particle size description procedure used in the model plays a crucial role in the final steady state of sand ripples.
FRONTIERS IN PHYSICS
(2021)
Article
Chemistry, Physical
Guang Li, Wei He, Bo Yang, Hongxiang Yu, Ning Huang, Hans J. Herrmann, Jie Zhang
Summary: In this study, the application of superstatistics to particle-laden turbulent flow was reported. It was found that the sand-laden flow exhibited more intermittency and had smaller long time scales compared to sand-free flow. The probability density of the fluctuating energy dissipation rate in sand-laden flow followed a log-normal distribution with higher variances than for sand-free flow. The variance of this dissipation rate was shown to be a power law of the corresponding time scale. The superstatistics model accurately predicted the structure function exponents for sand-free flow but tended to overestimate them for sand-laden flow, especially at higher Reynolds numbers.
EUROPEAN PHYSICAL JOURNAL E
(2022)
Article
Chemistry, Multidisciplinary
Peng Wang, Jie Zhang, Ning Huang
Summary: The influence of gravity flow on the dynamics of sand ripples formation stage is significant, leading to a decrease in the growth rate of sand ripples, stabilization of the sand bed, and longer wavelengths. The competition between destabilizing reptation flow and stabilizing gravity flow affects pattern selection and results in sand ripples with straighter and more continuous crests. The impact angle has little effect on sand ripples characteristics at the initial stage of their development.
APPLIED SCIENCES-BASEL
(2021)
Article
Energy & Fuels
Xing Li, Ning Huang, Guanyan Chen, Yanli Zhang, Yang Zhao, Jie Zhang, Ding Tong
Summary: Although inlet bent pipes are commonly used in limited installation space, their effects on the inlet flow characteristics and performance of centrifugal compressors are still uncertain. This study numerically simulated a centrifugal compressor with a straight inlet pipe, and then examined the internal flow characteristics with a 90-degree bent pipe (p(90)) and a Z-shaped bent pipe (p(z)). The results indicated that using two inlet bent pipes reduces the compressor's performance to some extent, particularly with p(z), which resulted in a maximum reduction of 6.82% in pressure ratio and 14.83% in efficiency. The reduction in pressure ratio and efficiency increased with increasing distortion degree and maintained an increasing trend with higher flow rates. The flow characteristics at the impeller inlet were influenced by the flow field distribution at the outlet section of the inlet pipe, with the distortion areas ranging from 72(degrees) to 144(degrees) in the circumferential direction for p(90) and from 108(degrees) to 180(degrees) and 288(degrees) to 360(degrees) for p(z). The high distortion flow entering the impeller created a large area of high turbulent kinetic energy in the downstream flow channel, leading to increased flow loss.
Article
Environmental Sciences
Yong Wang, Jie Zhang, Hongchao Dun, Ning Huang
Summary: This article summarizes the process of sand drift erosion in the Gobi desert and finds that the erosion amount of saltating particles is closely related to friction velocity and gravel coverage. The peak value of saltation erosion rate increases with friction velocity and follows a power-law relationship. It is also found that the damage height caused by saltation erosion is primarily concentrated in the range of 0.03 to 0.15 meters and increases linearly with friction velocity.
Article
Meteorology & Atmospheric Sciences
Yong Wang, Jie Zhang, Ning Huang, Haitao Sun, Hongchao Dun
Summary: Raindrops impacting on soil can generate aerosol, which contains viruses and microorganisms and can affect the content and composition of aerosol in the atmosphere. This study proposes a mathematical model to describe the generation of soil aerosol and analyzes its vertical transport in the air. The results show that aerosol content in the atmosphere initially increases, reaches a peak, and then slowly decreases, with small-sized soil aerosol lasting longer in the atmosphere and posing more harm to human life and industry. The study provides a simplified model for analyzing soil aerosol movement and predicting its vertical transport during rainfall.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Geography, Physical
Hongxiang Yu, Guang Li, Benjamin Walter, Michael Lehning, Jie Zhang, Ning Huang
Summary: The study investigates the impact of wind speed on snow cornice growth through ring wind tunnel experiments. It finds that cornice size growth is mainly determined by the combined effects of mass accumulation and erosion under moderate wind speeds. This provides new insights into the formation mechanism of snow cornices and is significant for predicting cornice-induced avalanche activity.
Article
Environmental Sciences
Jie Zhang, Guang Li, Li Shi, Ning Huang, Yaping Shao
Summary: This study hypothesizes that large eddies are crucial in the entrainment of aeolian particles. Wind-tunnel experiments were conducted to measure the particle entrainment rate under various conditions. By using a fluttering cloth, large eddies similar to convective eddies, referred to as quasi-convective turbulence, were generated. The results show that quasi-convective turbulence increases surface shear stress and enhances the entrainment of sand and dust particles.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2022)
Article
Environmental Sciences
Xin Yin, Cong Jiang, Yaping Shao, Ning Huang, Jie Zhang
Summary: This study investigates the influence of atmospheric-boundary-layer stability (ABLS) on particle deposition through large-eddy simulation. The results show that shear stress can be well approximated using a Weibull distribution, and the ABLS effects on particle deposition can be estimated by considering shear stress fluctuations.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2022)
