Application of Improved Graph Theory in Planning of River and Lake System Connection by JIANG Yu, ZHANG Qionghai, YAN Meng

“…This paper first analyzes the river system characteristics,hydrodynamic conditions,and status quo of water environment in the tidal river network area.On this basis,a preliminary connection scheme is then drawn up by the concept of connectivity in the graph theory based on “flow resistance” and the connectivity diagnosis and optimization method of river systems based on the “shortest path” idea.The scheme is further refined by a one-dimensional hydrodynamic mathematical water quality model.The results reveal that the scheme of minimum resistance connection by the graph theory is the optimal scheme of structural connectivity,and the problem of connection failure caused by the sluice control mode is solved after the scheme is refined by the mathematical model.This method can quickly diagnose the structural connectivity of river and lake systems,enrich the diagnostic means of river and lake connectivity,and provide a reference for the planning of river system connectivity in the tidal river network area of the Pearl River Delta.…”
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Linear and nonlinear resonant properties of electron gas in n-InSb and graphene layers in terahertz range in bias magnetic fields by V Grimalsky, Yu Rapoport, S Koshevaya, A Nosich, J Escobedo-Alatorre

“…Thus, the nonlinear hydrodynamic equations are valid to describe the nonlinear dynamics of the electron gas in graphene and in n- InSb. …”
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B-Spline Impulse Response Functions of Rigid Bodies for Fluid-Structure Interaction Analysis by S. Zhou-Bowers, D. C. Rizos

“…Hydrodynamic effects on the massless rigid body generated by an arbitrary transient acceleration of the body are computed by a mere superposition of BIRFs. …”
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Integration of a Low Gas-Saturated Zone in Creating a 3D Model of the Medvezhye Field by Artem Shirjaev, Yuri Vaganov, Vitaliya Naumenko

“…A total of three models are constructed, and a 400*400*0.4 m grid is recommended for further hydrodynamic modeling. A comparison of the three grids suggests that a more detailed model delivers more thorough results, however, heavy models cannot be applied to hydrodynamic modeling. …”
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Conceptual Model for Simulating the Adjustments of Bankfull Characteristics in the Lower Yellow River, China by Yuanjian Wang, Xudong Fu, Guangqian Wang

“…Basic conservation equations for mass, friction, and sediment transport capacity and the Exner equation were adopted to simulate the hydrodynamics underlying fluvial processes. The relationship between changing rates in bankfull width and depth, derived from quasiuniversal hydraulic geometries, was used as a closure for the hydrodynamic equations. …”
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On Nonlinear Simulation Methods and Tools for Evaluating the Performance of Ships and Offshore Structures in Waves by Shukui Liu, Apostolos Papanikolaou

“…The developed alternative set of time domain methods simulate the hydrodynamic forces acting on ships advancing in waves with constant speed. …”
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Multimessenger study of baryon-charged QCD matter in heavy-ion collisions by Lipei Du

“…Methods for extracting temperature from photon and dilepton spectra are examined by comparison with the underlying hydrodynamic temperature. The possibility of combining photon and dilepton spectra to extract radial flow is also investigated. …”
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Simulation on Water Diversion Regulation Effect in the Central Ditch of Hengqin New District,Zhuhai by LONG Xiaofei, WU Yaju, FAN Qunfang, ZHU Song, WANG Hua, ZHU Jinhe

“…The tidal river network area of the Pearl River Delta uses the ebb-and-flow differences between tidal level of the outer river and water level of the inland river to divert clear water for regulation.This is an effective way to improve the water environment of the tidal river network.The central ditch of Hengqin New District is in the tidal river network area of the Pearl River Delta.To improve the water environment of the central ditch in Hengqin New District,this study builds a one-dimensional hydrodynamic mathematical model of water quality and investigates the hydrodynamic regulation scheme for improving the regional water environment.Then,the water exchange effects of the original regulation scheme and the optimized regulation scheme are calculated and analyzed.The simulation results show that the optimized regulation scheme increases the regional flow rate by 0.20 m/s,shortens the half-exchange period by 101.5 h,and increases the water exchange rate by a factor of 1.1,which demonstrates a great improvement effect on the regional water environment.The results can be used as a reference for the implementation of the water diversion regulation scheme in the tidal river network area.…”
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Alignment-induced self-organization of autonomously steering microswimmers: Turbulence, clusters, vortices, and jets by Segun Goh, Elmar Westphal, Roland G. Winkler, Gerhard Gompper

“…In fluid environments, collective self-organization is governed by hydrodynamic interactions. By large-scale mesoscale hydrodynamics simulations, we study the collective motion of polar microswimmers, which align their propulsion direction by hydrodynamic steering with that of their neighbors. …”
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Sloshing of Liquid in Rigid Cylindrical Container with a Rigid Annular Baffle. Part II: Lateral Excitation by J.D. Wang, D. Zhou, W.Q. Liu

“…The sloshing surface displacement, the hydrodynamic pressure distribution, the resultant hydrodynamic force and moment are discussed for the containers subjected to harmonic and seismic lateral excitation, respectively.…”
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Processes controlling the dispersion and beaching of floating marine debris in the Barcelona coastal region by Ivan Hernandez, Leidy M. Castro-Rosero, Leidy M. Castro-Rosero, Manuel Espino, Jose M. Alsina, Jose M. Alsina

“…The complexity of the beaching process makes it difficult to establish relationships with hydrodynamic variables, although a clear association between the coastline orientation and wave direction was established. …”
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SOLUTION AND ANALYSIS OF THERMAL ELASTOHYDRODYNAMIC LUBRICATION MODEL FOR TOOTH AND SLIDING RING COMBINED SEAL by ZHANG Yi, YANG Qiang, YANG Lin, WANG HaiJuan, XIONG ZiJie, XIONG SiYang, ZHONG SiPeng

“…Combined with the hydrodynamic lubrication equation, the temperature field energy equation and the viscosity temperature equation, the finite difference method is used to solve the thermoelastic flow pressure lubrication model. …”
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Study on the Relationship between Chlorite Clay Film Diagenesis and Sedimentary Facies in Reservoir Sandstones by Rui Zhang, Guangsheng Qin, Minglong Nie

“…The results show that the sandstones developed by chlorite clay films are closely related to the strong hydrodynamic deposition condition. The formation of chlorite clay film is a gradual process, and the particle coating is mainly formed in the early stage. …”
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The role and mechanisms of intraocular infusion during microinvasive guillotine and ultrasonic vitrectomy by B.M. Aznabaev, T.R. Mukhamadeev, T.I. Dibaev, T.N. Ismagilov

“…</p> <p> <b>Keywords</b>: vitrectomy, intraocular pressure, hydrodynamic balance, forced infusion, microsurgical systems, ultrasonic vitrectomy. …”
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Comparison of Microfluidic Synthesis of Silver Nanoparticles in Flow and Drop Reactors at Low Dean Numbers by Konstantia Nathanael, Nina M. Kovalchuk, Mark J. H. Simmons

“…The results demonstrate that both microfluidic approaches produced AgNPs of similar sizes when the hydrodynamic conditions defined by the values of De and the residence time within the reactor were similar.…”
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Application of MIKE11 Model in River Network Area of Pearl River Delta for Water Quality Improvement by LI Qingfeng, GUO Shan, ZHANG Ruyu, YAN Xiaoman, ZHANG Xuelin

“…The water quality improvement in the river network area of the Pearl River Delta is an important part of the comprehensive management of the river basin,and it is necessary to study the compliance of water quality improvement measures.Taking the Beicun river system of Nanhai district,Foshan city in the Pearl River Delta as an example,this paper chooses COD,NH₃-N and TP as the characteristic indexes based on the MIKE11 one-dimensional hydrodynamic water quality model to study the hydrodynamic force of rivers and water quality improvement effect under different engineering schemes.The results show that measures such as pollution interception,silt removal,and water diversion can improve the overall water quality of the studied river reach in varying degrees,and thus the water quality improvement is achieved.As the projects of pollution interception and fresh water are implemented,the water quality in typical cross sections of main rivers in the Beicun river system can meet the requirement of class Ⅴ.After the implementation of water diversion and transfer,as well as CSO storage pool,the pollutant concentration in the observed cross section of seriously polluted rivers decreases by more than 70%.As a result,this paper can provide a basis for improving water quality in the river network area of the Pearl River Delta.…”
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Understanding the influence of stratification for mine water management: a comparative study by Elke Mugova, Christian Wolkersdorfer

“…To understand the complex chemical and hydrodynamic processes within the mine pool, it is critical to establish effective practices and management strategies. …”
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Experimental Investigation of Wave-Induced Ship Hydroelastic Vibrations by Large-Scale Model Measurement in Coastal Waves by Jialong Jiao, Huilong Ren, Shuzheng Sun, Christiaan Adika Adenya

“…Ship hydroelastic vibration is an issue involving mutual interactions among inertial, hydrodynamic, and elastic forces. The conventional laboratory tests for wave-induced hydroelastic vibrations of ships are performed in tank conditions. …”
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Analysis on Mixed Lubrication Performance of Pin-bush Pairs in Large-sized Marine Chain by Liu Yi, Liu Xiaoling, Liu Guoliang, Li Qun

“…The results show that when the large-sized roller-chain assembly operates under low-speed and light-load conditions, the pin-bush pair is essentially in a hydrodynamic lubrication state, and thermal effects can be neglected. …”
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Finite Element Modeling and Analysis of Nonlinear Impact and Frictional Motion Responses Including Fluid—Structure Coupling Effects by Yong Zhao

“…The submerged free standing rack system and surrounding water are coupled due to hydrodynamic fluid-structure interaction (FSI) using potential theory. …”
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