Thermally Driven Atmospheric Escape: Transition from Diffusion-limited to Drag-off Escape by Jack C. Evans, Shane Robert Carberry Mogan, Robert E. Johnson, Orenthal J. Tucker

“…We examine the transition from diffusion-limited to drag-off escape using a direct simulation Monte Carlo (DSMC) model developed to simulate planetary atmospheres, referred to as Harrah. …”
Get full text

Prediction and Analysis of PDC Bit Wear in Conglomerate Layer with Machine Learning and Finite-Element Method by Li-qiang Wang, Ming-ji Shao, Wei Zhang, Zhi-peng Xiao, Shuo Yang, Ming-he Yang

“…To achieve efficient drilling and prolong the bit service life, a simplified model of a PDC bit with double cutting teeth was established by using finite-element numerical simulation technology, and the rock-breaking process of PDC bit cutting teeth was simulated using the Archard wear principle. …”
Get full text

Pulsed GMAW-based WAAM–Influence of droplet detachment mode on the geometry and mechanical properties of 308 L stainless steel by R.F. Rezende, A.R. Arias, E.J. Lima, II, F.G.F. Coelho

Get full text

A Modified Newmark Methodology for Permanent Deformation Analysis of Rock-Fill Dams by Hongjun Li, Hong Zhong, Zuwen Yan, Jianming Zhao

Get full text

Dynamic Guidance Strategy for Pedestrian Travel in Large-Scale Activity under Harsh Environment by Wenbo Huang, Yanyan Chen, Shushan Chai, Huibo Bi

“…To evaluate the effectiveness of the strategy, a multiagent-based simulation method is proposed. Through numerical simulation, it is found that the guidance strategy can improve the movement efficiency by adjusting releasing duration of VMS information or improving the information obedience rate of pedestrians. …”
Get full text

A numerical model based on ALE formulation to predict crack propagation in sandwich structures by Marco Francesco Funari, Fabrizio Greco, Paolo Lonetti, Saverio Spadea

“…The model incorporates shear deformable beams to simulate high performance external skins and a 2D elastic domain to model the internal core. …”
Get full text

Safety Detection and Assessment of Aqueduct Supporting Structure under Lateral Impact Load by LI Jun, CUI Dehao, YOU Ri, HAO Jie, PAN Wenming

“…In view of the structural damage of an aqueduct pile-pillar supporting structure caused by ship collisions,relevant engineering data were collected,and on-site detection and monitoring analysis were carried out.In addition,the finite element method was used to establish a three-dimensional entity analytical model of the aqueduct pile-pillar structure.Under the joint action of the coupled foundation and pile foundation and superstructure,numerical simulation and calculation analysis were carried out on the pile-pillar collision process.The distribution and characteristics of the damage of the supporting structure caused by collisions were studied and verified.The finite element numerical simulation results show that the high-stress area of the aqueduct pile-pillar structure during the ship collision process can be divided into two categories according to the cause.One is the high-stress area caused by the direct contact load,which occurs in the collision contact surface and the adjacent area between the ship in a collision and the bearing platform,and the other is caused by the overall bending deformation of the pile-pillar structure,which occurs in the dangerous section of the pile-pillar structure and the bearing platform connection.In addition,the simulation analysis and on-site detection results are consistent.By assessing the influence of ship collisions and checking the potential safety hazards of the aqueduct,the research results lay a foundation for the maintenance,reinforcement,and design of the aqueduct.…”
Get full text

The Integral Test Facility Karlstein by Stephan Leyer, Michael Wich

“…Integral system tests, including also the Passive Pressure Pulse Transmitter, will be performed to simulate transients and Loss of Coolant Accident scenarios at the test facility. …”
Get full text

RESEARCH ON THE DESIGN OF A NOVEL HIGHYWAY CRASH CUSHION BASED ON THE MINMIAL SURFACE SANDWICH STRUCTURE (MT) by SUN Nan, ZHOU KaiFa, WANG Shuai, MA WenYi, GUO DongLing

“…Then, the quasi-static compression finite element simulation is carried out. Finally, the vehicle-crash cushion collision model system is established, and the full scale crash simulation is carried out at the speed of 100 km/h. …”
Get full text

Dynamics Analysis and Experiment of Novel Compound Dry Separator by Li Hongxi, Zhou Enhui, Zhang Bo, Jiang Haishen, Shen Ling, Yin Zixin

“…The mathematical model and simulation model based on ADAMS of the NCDS were established. …”
Get full text

Hybrid Model: An Efficient Symmetric Multiprocessor Reference Model by Shupeng Wang, Kai Huang, Tianyi Xie, Xiaolang Yan

“…The greatest challenge of simulation-based verification is the creation of the reference model of the symmetric multiprocessor. …”
Get full text

Hysteresis Modeling of Magnetic Shape Memory Alloy Actuator Based on Krasnosel'skii-Pokrovskii Model by Miaolei Zhou, Shoubin Wang, Wei Gao

“…In order to demonstrate the validity of the proposed modeling approach, simulation experiments are performed, simulations with improved gradient correction algorithm and variable step-size recursive least square estimation algorithm are studied, respectively. …”
Get full text

Experimental and numerical assessment of the effect of speed and loading conditions on the nominal wake of a containership by Carlo Giorgio Grlj, Nastia Degiuli, Ivana Martić

“…The nominal wake is determined with numerical simulations that model the effects of the free surface and without the free surface included, i.e., double body simulations. …”
Get full text

Optimization and Design of Hammerheads and Fenders on Scrap Metal Shredders Based on Improved Genetic Algorithm by He Tian, Guoqiang Wang, Kangkang Sun, Zeren Chen, Chuliang Yan, Da Cui

“…A novel optimization algorithm combining genetic algorithm and simulated annealing algorithm is proposed to improve the dynamic balance of scrap metal shredders. …”
Get full text

Electronic Structure of Hydrogenated and Surface-Modified GaAs Nanocrystals: Ab Initio Calculations by Hamsa Naji Nasir, Mudar A. Abdulsattar, Hayder M. Abduljalil

“…Two methods are used to simulate electronic structure of gallium arsenide nanocrystals. …”
Get full text

Richards equation for the assessment of landslide hazards by Ramesh Chandra Timsina

“… In this work, we study the numerical simulation models for water ow in variably saturated (unsaturated) soils. …”
Get full text

Design of a Flapping Aircraft with Variable Angles of Attack Based on a RC/RRU Parallel Mechanism by Wang Yujin, Hu Rui, Xia Youchang, Xu Luyou, He Miao

“…In order to simulate the flapping flight with variable angles of attack in nature, a flapping aircraft with variable angles of attack based on a RC/RRU parallel mechanism is proposed. …”
Get full text

Synergistic Optimization Method for URT Network Train Connection Scheme in Peak and Off-Peak Periods by Ruihua Xu, Xuyang Song, Feng Zhou, Fangsheng Wang

“…A mathematical model was developed to simulate the interaction between passengers and trains. …”
Get full text

Surface plasmon resonance detection of anti-cancer drug flutamide by graphitic carbon nitride/chitosan nanocomposite by Hassan Nasiri, Karim Abbasian

“…The intricate simulations ultimately reveal the optimal combination, tested under three different pH conditions (6.2, 7.2, and 8). …”
Get full text

Research and Application of SWAT Model in Basin Without Reservoir Outflow Data by LIANG Guixing, CUI Yali, HUANG Qibo, WANG Yaru, ZHOU Yan, ZHANG Yin

“…Due to human factors such as reservoirs,the hydrological cycle of natural basins will change.During the establishment of a basin hydrological model,the reservoir factors should be considered.However,the lack of reservoir outflow data will affect the accuracy of the model to a certain extent.Based on the SWAT (Soil and Water Assessment Tool) distributed hydrological model,long-term daily-scale hydrological model under natural conditions,and Muskingum principle,this paper establishes the upstream and downstream flow response relationships,and obtains the reservoir outflow to improve the accuracy of the simulated hydrological cycle,applies the method to the Guijiang River Basin in Guilin City,Guangxi Zhuang Autonomous Region for verification,and identifies and verifies the hydrological model parameters of the Guijiang River Basin through SWAT-CUP.The results show that the simulated runoff at each hydrological station after the availability of the reservoir outflow is close to the measured runoff.Among them,the monthly runoff simulation evaluation factors R² and NS of Guilin Station are increased from 0.85 and 0.83 to 0.98 and 0.93 respectively,and the accuracy of the model is effectively improved,which provide technical means for hydrological management of the Guijiang River Basin.…”
Get full text