Results 151 to 160 of about 37,322 (309)

Nacelle drag reduction: An analytically-guided experimental program

, 1975
Modifications are proposed to standard estimating procedures, as well as the BODY computer program, which predict that the drag of two nacelles will equal the drag of the fuselage.
Smetana, F. O.
core  

Imaging Electric Polarization Switching in Multilayer Graphene

Advanced Science, EarlyView.
Domain wall sliding‐induced electric polarization switching is directly observed for the first time in multilayer graphene, enabled by a novel optical readout method. The polarization switching is realized upon application of global and local electric fields, and mechanical forces between neighboring polar domains of opposite out‐of‐plane polarizations
Zhou Zhou, Xiyao Peng, Jianfeng Bi, Jing He, Fei Xue, Jie Jiang, Huizhen Wu, Zhiwen Shi, Haoliang Qian, Toshikaze Kariyado, Sihan Zhao   +10 more
wiley   +1 more source

Drag Reduction of Crude Oil Flow in Pipelines Using Sodium Dodecyl Benzene Sulfonate Surfactant

Iraqi Journal of Chemical and Petroleum Engineering, 2007
In the present work, a closed loop circulation system consist of three testing sections was designed and constructed. The testing sections made from (3m) of commercial carbon steel pipe of diameters(5.08, 2.54 and 1.91 cm) .
G. A. R. Rassou, Ali A. A. Hadi
doaj  

A Multimodal Magnetically Driven Soft Robot With Integrated Actuation‐Sensing Based on Photothermal Reprogramming Technology

Advanced Science, EarlyView.
This work reports a thermally safe, photothermally reprogrammable magnetic soft robot with its reprogramming temperature tuned to ∼39.5°C for biocompatibility. It achieves multimodal locomotion (max speed of 1.8 BL/s) and integrates liquid‐metal capacitive sensing to monitor self‐motion and detect environmental changes in simulated gastric environments,
Liu Yang, Yuliao Dong, Kangning Li, Cheng Jing, Ben Wang, Lin Xu   +5 more
wiley   +1 more source

Study on Drag Reduction of Ti6Al4V with Different Shaped Microstructures via Femtosecond Laser Processing. [PDF]

Materials (Basel)
Sun M, Wang Y, Li J, Wu J.
europepmc   +1 more source

Deep reinforcement learning for turbulent drag reduction in channel flows. [PDF]

Eur Phys J E Soft Matter, 2023
Guastoni L, Rabault J, Schlatter P, Azizpour H, Vinuesa R.   +4 more
europepmc   +1 more source

Turbulator Diameter and Drag on a Sphere

, 2009
A sphere with turbulators of varying diameter was pulled through water with constant force. The relationship between the diameter of the turbulators and the ball’s total coefficient of drag was determined.
Nicholas Robson
core  

Photonic‐Enabled Energy‐Efficient Transparent Neuromorphic Computing Devices: A Review

Advanced Science, EarlyView.
Transparent photonic neuromorphic computing devices merge optics and brain‐inspired computing to overcome von Neumann bottlenecks with ultrafast, low‐energy processing. By exploiting transparent oxides, 2D materials, phase‐change materials, and hybrid heterostructures, these platforms enable photonic synapses, memory, and logic for see‐through edge ...
Shuvaraj Ghosh, Ki‐bum Lee, Junghyeon Lee, Seunghee Cho, Malkeshkumar Patel, Hangfei Li, Yu Wen, Ye Zhou, Joondong Kim   +8 more
wiley   +1 more source

Green and Flexible Superhydrophobic Surfaces for Friction and Drag Reduction Using "Pattern Elongated" Nanoimprinting. [PDF]

Langmuir
Sarkiris P, Kaloudis E, Gogolides E, Ellinas K.   +3 more
europepmc   +1 more source

Correction to: Deep reinforcement learning for turbulent drag reduction in channel flows. [PDF]

Eur Phys J E Soft Matter, 2023
Guastoni L, Rabault J, Schlatter P, Azizpour H, Vinuesa R.   +4 more
europepmc   +1 more source