Results 91 to 100 of about 897,659 (282)

Biomimetic interfaces for drag reduction: From mechanism to applications

Friction
With the global population growing, energy demand has increased drastically. Simultaneously, environmental concerns have been increasing at an alarming rate.
Anhui Yu, Ye Fu, Shangzhen Xie, Zhiguang Guo, Feiyan Fu, Weimin Liu   +5 more
doaj   +1 more source

An investigation on the drag reduction performance of bioinspired pipeline surfaces with transverse microgrooves

Beilstein Journal of Nanotechnology, 2020
A novel surface morphology for pipelines using transverse microgrooves was proposed in order to reduce the pressure loss of fluid transport. Numerical simulation and experimental research efforts were undertaken to evaluate the drag reduction performance
Weili Liu, Hongjian Ni, Peng Wang, Yi Zhou   +3 more
doaj   +1 more source

Evaluation of Sodium Alginate as a Drag Reduction Agent in Flowing Fluids: Effects of Concentration, Temperature, and Flow Rate

Abstract Sodium alginate, a natural polymer, is widely utilized in various fields due to its exceptional drag reduction properties. This study systematically investigates the effects of sodium alginate concentration, flow rate, and temperature on the drag reduction rate.
Zhensong Cheng, Yunxia Chang, Xiaodong Dai, Xin Zhang, Xudong Wang, Liang Gao, Jingwen Li, Xinwang Song   +7 more
openaire   +1 more source

Optical investigation of flow rate induced drag reduction in partially substrateless microchannels with opposing shear-free meniscus surfaces

Physics of Fluids
Conventional drag-reducing microchannels with superhydrophobic or liquid-infused surfaces are often limited by complex fabrication processes, mechanical fragility, and chemical hazards. This study introduces a partially substrateless microchannel (PSM) featuring a single slit or a set of parallel slits spanned by shear-free air/water meniscus ...
E. Bold, E. Oesterschulze
openaire   +1 more source

Magnetic Droplet Manipulation on Open Surfaces

Advanced Materials Technologies, EarlyView.
Recent advances in the manipulation of magnetic droplets demonstrate various manipulations on open surfaces, including transport, splitting, merging, and force‐controlled motion, enabled by magnetic particles and external fields. ABSTRACT Manipulation of liquids on a smaller scale enables applications in various fields, particularly diagnostics and ...
Robab Jahangir, Vahid Nasirimarekani
wiley   +1 more source

In-flow Stability and Flow Drag Reduction Performance of Resident Electrolyzed Microbubble Array

工程科学与技术, 2022
Aiming at the problem of stable high-efficiency underwater drag reduction for the vehicle surface, an experimental study on the flow drag reduction performance of autostable electrolyzed microbubble array was carried out. The test piece of electrode-wall
Rui ZHU, Huanbin ZHANG, Qibin ZHUANG, Weiqi WEN, Zijie ZHANG, Xingyu HE, Zhirong LIU   +6 more
doaj  

Co-simulation of drag reduction of placoid scale oscillation driven by micro Stewart mechanism

The Physics of Fluids
To reduce the drag of underwater vehicles during navigation, this paper proposes a skin imbricated with bionic placoid scale based on micro-Stewart mechanism.
Shuai Li, Shaogang Liu, J. Cui, Linhui Zhou, Tangqi Lv, Dan Zhao, Liqiang Dong, Hongyue Jiao   +7 more
semanticscholar   +1 more source

On–Off Switchable Micromotors for Use in Steerable Microvehicles

Advanced Robotics Research, EarlyView.
Electrically controllable micromotors and microvehicles are developed by tuning the diffusion of the fuel. Self‐propelled micromotors using bubble propulsion show great promise for miniaturized devices with multiuse purposes such as cargo delivery and sensing. However, there is currently no method to electrically switch the micromotors on or off. Here,
Hugo Severinsson, Eswaran Murugasen, Jose G. Martinez, Edwin W. H. Jager   +3 more
wiley   +1 more source

Modulus‐Switchable Miniature Robots for Biomedical Applications: A Review

Advanced Robotics Research, EarlyView.
Materials, robot designs, proof‐of‐concept functions, and biomedical applications of modulus‐switchable miniature robots. Miniature soft robots have shown great potential in biomedical applications due to their excellent controllability and suitable mechanical properties in biological environments.
Chunyun Wei, Yibin Wang, Jiangfan Yu
wiley   +1 more source

Drag Reduction in Compressible Channel Turbulence with Periodic Interval Blowing and Suction

Applied Sciences
This paper employs direct numerical simulation (DNS) to investigate the influence of blowing and suction control on the compressible fully developed turbulent flow within an infinitely long channel.
Shibo Lee, Chenglin Zhou, Yang Zhang, Yunlong Zhao, Jiaqi Luo, Yao Zheng   +5 more
doaj   +1 more source