Results 91 to 100 of about 208,538 (280)

Biomimetic bluff body drag reduction by self-adaptive porous flaps [PDF]

, 2011
The performances of an original passive control system based on a biomimetic approach are assessed by investigating the flow over a bluff-body. This control device consists in a couple of flaps made from the combination of a rigid plastic skeleton coated
Alben, Audrey Feuvrier, Azeddine Kourta, Bearman, Bearman, Bechert, Bruneau, Choi, de Langre, Dickinson, Favier, Fish, Gad-el Hak, Gosselin, Gosselin, Groth, Laws, Liebe, Lyn, Morse, Nicolas Mazellier, Norberg, Owen, Pastoor, Roshko, Shao, Stanewsky, Taylor, Triantafyllou, Triantafyllou   +29 more
core   +4 more sources

Self‐Assembled Monolayers in p–i–n Perovskite Solar Cells: Molecular Design, Interfacial Engineering, and Machine Learning–Accelerated Material Discovery

Advanced Materials, EarlyView.
This review highlights the role of self‐assembled monolayers (SAMs) in perovskite solar cells, covering molecular engineering, multifunctional interface regulation, machine learning (ML) accelerated discovery, advanced device architectures, and pathways toward scalable fabrication and commercialization for high‐efficiency and stable single‐junction and
Asmat Ullah, Ying Luo, Stefaan De Wolf
wiley   +1 more source

Analyzing the Efficacy of Nickel Plating Coating in Hydraulic Pipeline Drag Reduction

Lubricants
This study delves into the drag-reducing properties of nickel plating coatings applied to hydraulic pipelines. To investigate the drag reduction characteristics of pipeline coatings, we designed a specialized experimental apparatus to conduct ...
Xue Wang, Junjie Zhou, Bowen Yao, Wenbo Liao   +3 more
doaj   +1 more source

Performance of polyacrylamide as drag reduction polymer of crude petroleum flow

Ain Shams Engineering Journal, 2014
The influence of polyacrylamide (PAM) as drag reducing polymer on flow of Iraqi crude oil in pipe lines was investigated in the present work. The effect additive concentration, pipe diameter, solution flow rate and the presence of radius elbows on the ...
Anees A. Khadom, Ali A. Abdul-Hadi
doaj   +1 more source

Photochemical Fuel Carrier Molecules for Robotic Embodied Energy

Advanced Materials, EarlyView.
We designed a novel fuel carrier photoresponsive molecule for on‐demand energy storage and release. Carrier molecules undergo bond scission under UV light to release chemical fuel and locally generate propulsive Marangoni flows. We demonstrate this photochemical embodied energy strategy in small‐scale robots and active matter systems, enabling ...
Chuqi Huang, Songah Jeong, Ji Woo Kim, Kanyarat Mantala, Zenghao Zhang, Hyungwoo Kim, Abdon Pena‐Francesch   +6 more
wiley   +1 more source

High‐Gain Ag2Te/MoS2 Hybrid Photodetectors for Short‐Wave Infrared Imaging

Advanced Materials, EarlyView.
A precision‐engineered short‐wave infrared image sensor based on a 0D/2D Ag2Te/MoS2 hybrid structure is demonstrated in this work. The device exploits photodoping at the nanoscale interface to achieve broadband detection from visible to infrared wavelengths with high responsivity and fast response.
Seock‐Jin Jeong, Hyun Woo Ko, Suyeon Jo, Joicy Selvaraj, Jung‐Min Kim, Namji Lee, Jae‐Hyeon Ahn, Hyeonchae Lee, Seungmin Jeong, Heedae Kim, Paul Hongsuck Seo, Jae Won Shim, Yonghun Kim, Hyun‐Soo Ra, Min‐Chul Park, Jong‐Soo Lee   +15 more
wiley   +1 more source

A perturbative model for predicting the high-Reynolds-number behaviour of the streamwise travelling waves technique in turbulent drag reduction

, 2013
The background of this work is the problem of reducing the aerodynamic turbulent friction drag, which is an important source of energy waste in innumerable technological fields.
Belan, Marco, Quadrio, Maurizio
core   +1 more source

Effect of Surface‐Lubricant Compatibility on Bubble Formation in Lubricant‐Infused Surfaces

Advanced Materials Interfaces, EarlyView.
Lubricant‐infused surfaces reduce drag partly through bubbles that form when lubricant depletes. Using laser‐textured steel infused with silicone oil, we show that microbubble nucleation occurs even on surfaces fully wetted by the lubricant, regardless of chemistry.
Leo James, Isaac J. Gresham, Georg Schnell, Hermann Seitz, Chiara Neto   +4 more
wiley   +1 more source

Performance Parameters of Hydro-oscillator and Their Impacts on Drag Reduction Rate

Shiyou jixie
In order to rationally optimize the parameter design of hydro-oscillator and operating parameter setting in field application, a model of drill string oscillation in horizontal section was built for numerical simulation, and the numerical simulation ...
Jiang Hua, Li Jun, Chen Jie, Zha Chunqing, Yin Chuanzhong   +4 more
doaj  

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