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Giancarlo Alfonsi, Stefania A. Ciliberti, Marco Mancini and Leonardo Primavera
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Yung-Li Wang, Qun-Zhan Huang and Shao-Yiu Hsu
Understanding the displacement of the resident wetting fluid in porous media is crucial to the remediation strategy. When pollutants or nutrients are dissolved in the surface wetting fluid and enter the unsaturated zone, the resident wetting fluid in the...
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Dapeng Xiong, Yinxin Yang and Yanan Wang
An improved synthetic eddy method (SEM) is proposed in this paper for generating the boundary layer at the inlet of a computational domain via direct numerical simulation. The improved SEM modified the definition of the radius and the velocities of the e...
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Paolo Oresta, Laura Fabbiano and Gaetano Vacca
The multi-phase Rayleigh?Bènard convection has been weakly investigated, even though it plays a leading role in the theoretical and applied physics of the heat transfer enhancement. For the case of moderate turbulent convection, a rather unexpected resul...
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David Engelmann, Martin Sinkwitz, Francesca di Mare, Björn Koppe, Ronald Mailach, Jordi Ventosa-Molina, Jochen Fröhlich, Tobias Schubert and Reinhard Niehuis
This article provides a summarizing account of the results obtained in the current collaborative work of four research institutes concerning near-wall flow in turbomachinery. Specific questions regarding the influences of boundary layer development on bl...
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Shuai Tang, Zixuan Yang, Caixi Liu, Yu-Hong Dong and Lian Shen
Sea spray droplets play an important role in the momentum, heat and mass transfer in the marine atmospheric boundary layer. We have developed a new direct numerical simulation method to study the generation and transport mechanisms of spume droplets by w...
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Guobiao Cai, Lihui Liu, Bijiao He, Guilong Ling, Huiyan Weng and Weizong Wang
Chemical and electrical thrusters are generally utilized to control the attitude and orbit of spacecraft in aerospace. When they are firing, the exhaust expands into the vacuum environment, known as the vacuum plume. The plume flow can collide with space...
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Junru Li, Shengshi Xie, Fei Liu, Yaping Guo, Chenglong Liu, Zhenyu Shang and Xuan Zhao
To improve the accuracy of discrete element simulation in the process of separating potato?soil mixtures, the contact parameters of sandy soil with 3, 6, 9, and 12% water content were calibrated in DEM simulation using EDEM software simulation. The error...
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German Ardul Munoz-Hernandez, Gerardo Mino-Aguilar, Jose Fermi Guerrero-Castellanos and Edgar Peralta-Sanchez
This paper presents a design of a cruise control based on a fractional-order proportional and integral (PI) direct torque control applied to the traction system of an electric vehicle (EV). The paper also discusses the modeling, control design and simula...
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Galia Faingold, Leonid Tartakovsky and Steven H. Frankel
In the reported study, various aspects of dimethyl ether/hydrogen combustion in a Reactivity Controlled Compression Ignition (RCCI) engine are numerically evaluated using Reynolds Averaged Navier-Stokes (RANS) and Large Eddy Simulation (LES). Early direc...
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Galia Faingold, Leonid Tartakovsky and Steven H. Frankel
In the reported study, various aspects of dimethyl ether/hydrogen combustion in a Reactivity Controlled Compression Ignition (RCCI) engine are numerically evaluated using Reynolds Averaged Navier-Stokes (RANS) and Large Eddy Simulation (LES). Early direc...
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Foad Rahimidehgolan, Gholamhossien Majzoobi, Farhad Alinejad and Jalal Fathi Sola
Damage models, particularly the Gurson?Tvergaard?Needleman (GTN) model, are widely used in numerical simulation of material deformations. Each damage model has some constants which must be identified for each material. The direct identification methods a...
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Tianlong Jia, Hui Qin, Dong Yan, Zhendong Zhang, Bin Liu, Chaoshun Li, Jinwen Wang and Jianzhong Zhou
Traditional reservoir operation mainly focuses on economic benefits, while ignoring the impacts on navigation. Thus, the economic operation of reservoirs considering navigational demands is of great significance for improving benefits. A navigation capac...
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Jiaming Fan and Xuefeng Xu
The phenomenon of surface charging, known as contact electrification or tribocharging, has wide-ranging applications but also notable hazards. Precisely measuring surface charge density in insulating materials is crucial for optimizing tribocharging and ...
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Sang Hun Kang
To develop technologies for the stable operation of electric propulsion systems, the effects of charge exchange (CEX) on the exhaust plume of a Hall thruster were studied using the particle-in-cell direct simulation Monte Carlo (PIC-DSMC) method. For the...
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Andrea Maranzoni and Massimo Tomirotti
Numerical modelling is a valuable and effective tool for predicting the dynamics of the inundation caused by the failure of a dam or dyke, thereby assisting in mapping the areas potentially subject to flooding and evaluating the associated flood hazard. ...
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Zhou Yang, Yuwang Xu, Jionglin Jing, Xuepeng Fu, Bofu Wang, Haojie Ren, Mengmeng Zhang and Tongxiao Sun
Particle image velocimetry (PIV) is a widely used experimental technique in ocean engineering, for instance, to study the vortex fields near marine risers and the wake fields behind wind turbines or ship propellers. However, the flow fields measured usin...
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Zhaosheng Yu, Yutian Yang and Jianzhong Lin
Deterministic lateral displacement (DLD) is a popular technique for separating micro-scale and nano-scale particles continuously. In this paper, an efficient three-dimensional fictitious domain method is developed for the direct numerical simulation of t...
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Patrick Fillingham, Arjun Viswanathan and Igor V. Novosselov
Though inclined under-expanded planar jets are used in many practical applications, the wall stress resulting from their impingement has not been adequately characterized. Reduced-order models for wall shear as a function of jet parameters have not been ...
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Fei He, Qiuying Lai, Jie Ma, Geng Wei and Weixin Li
The Taipu River is an important cross-border river in the Yangtze River Delta region and a direct channel connecting Taihu Lake and Huangpu River. Along the main stream of the Taipu River are many sources of water, such as the Wujiang, Dingzha, and Liant...
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