Results 111 to 120 of about 1,282,048 (295)

Drag modulation by inertial particles in a drag-reduced turbulent channel flow with spanwise wall oscillation

Harmonic oscillations of the walls of a turbulent plane channel flow laden with inertial particles are studied by point-particle direct numerical simulation to improve our understanding of the physical mechanism for friction drag reduction.
Gao, Wei, Parsani, Matteo, Wang, Minmiao
core   +1 more source

A Magnetic‐Driven Self‐Rotation‐Stabilized Miniature Swimming Robot

Advanced Science, EarlyView.
Inspired by the stable rotational descent of seeds in nature, this study designs a magnetic‐driven self‐rotation‐stabilized miniature swimming robot (MSMSR). Based on a resonance‐driven strategy, the robot exhibits high swimming performance, offering enhanced directional swimming and improved resistance to water flow disturbances compared to existing ...
Fujun Wang, Chuhan Zhang, Hao Zhang, Yanling Tian, Cunman Liang   +4 more
wiley   +1 more source

Enhancing the Efficiency of Horizontal Axis Wind Turbines Through Optimization of Blade Parameters

Journal of Engineering
In this research, we delve into the promising potential of horizontal axis wind turbines to effectively meet the electricity needs of developing countries.
Hossein Seifi Davari, Ruxandra Mihaela Botez, Mohsen Seify Davari, Harun Chowdhury   +3 more
doaj   +1 more source

Numerical Simulation of Aerodynamic Characteristics of a Leading-Edge Circulation-Control Airfoil

气体物理
Traditional circulation control method can enhance the lift and increase the lift-to-drag ratio of airfoils effectively. However, its failure at high angles of attack and the additional drag caused by airfoil geometry modification in circulation-control ...
Yongqiang TIAN, Zhengke ZHANG, Huan WANG, Xianshi YUAN, Haiqing LI   +4 more
doaj   +1 more source

Giant Direct Magnetoelectric Effect in Nanocomposite CoFe2O4:PVDF‐TrFE Thin Films

Advanced Science, EarlyView.
A novel three‐step grow‐etch‐fill fabrication approach creates structured cobalt ferrite/ferroelectric polymer nanocomposites with high interfacial areas. Driven by efficient strain‐mediated coupling, this crystalline system achieves a giant room‐temperature magnetoelectric coefficient nearly two orders of magnitude higher than other CFO/PVDF‐TrFE thin
Muireann de h‐Óra, Lynette Keeney, Rui Miguel Gonçalves Carvalho, Aliona Nicolenco, Tuhin Maity, Jordi Sort, Luís Amorim, Pedro Martins, Judith MacManus‐Driscoll   +8 more
wiley   +1 more source

A Preclinical Multifunctional Capsule Robot with Unified Diagnosis and Targeted Thermal Therapy for Gastrointestinal Diseases

Advanced Science, EarlyView.
A proof‐of‐concept multifunctional capsule robot integrates diagnostic imaging, magnetic navigation, wireless power transfer, and targeted thermotherapy for gastrointestinal applications. Magnetically guided positioning and stable wireless power enable localized thermal ablation, achieving controlled heating and high cell mortality in vitro.
Heng Zhang, Yichong Sun, Xiaoting Zhang, Chi‐Kwan Lee, Zheng Li, Yehui Li, Huarong Chen, Paul D. Mitcheson   +7 more
wiley   +1 more source

Aerodynamic Analysis of Marapi Electric Car Body Using Ansys Fluent

Rekayasa Mesin
Aerodynamic car design plays a crucial role in reducing drag, which in turn lessens fuel consumption. This study aims to investigate the effects of airflow around vehicles. This research simulated a 3D electric vehicle in unsteady conditions with various
Rina Rina, Rivanol Chadry, Daddy Budiman, Roni Kurniawan Putra, Abdillah Fadhil Wal Ikram   +4 more
doaj   +1 more source

Drag coefficients in hydraulic channel

, 2022
Experimental information is extremely useful in solving problems involving flow over bodies, as well as for determination of design parameters in aerodynamics and hydrodynamics, the drag coefficient being one of the most relevant as it allows to quantify the drag forces, that is, the total resistance of a body being dragged by a fluid. In this context,
openaire   +1 more source

The Drag Coefficient of a Sphere in a Square Channel

, 1989
The drag coefficient of a sphere in unconfined flow is given in most fluid mechanics texts, for example, Massey (1979). The drag coefficient, CD, is determined by measuring the force exerted on the sphere by the fluid when the relative velocity between ...
Beam, J. E., Mahefkey, E. T., Chow, Louis C., Leland, John E., J. E. Beam, L. C. Chow, E. T. Mahefkey, J. E. Leland   +7 more
core   +1 more source

Force‐Electric Nanotentacles of Tantalum Implant Accelerate Cellular Energy Metabolism/Crosstalk for Immunomodulation‐Vascularized Bone Integration

Advanced Science, EarlyView.
A biomimetic force‐electric nanotentacle‐enabled tantalum (Ta) implant with surface‐nanostructured LiTaO3 (n‐LiTaO3) was first developed via laser nanofabrication combined with Li+‐induced in situ reaction, enabling the transduction of ultrasound into bioelectrical cues.
Taixing Zhang, Ke Ma, Kangqing Zuo, Pandong Lin, Tailong Zhang, Rongliang Ding, Linbo Zhang, Aonan Li, Yinchuan Wang, Yanling Huang, Jichao Feng, Guiyong Xiao, Yupeng Lu, Bing Han, Zhiqiang Wang, Ningbo Li   +15 more
wiley   +1 more source