, 2003 We report measurements of turbulent drag reduction of two different polyelectrolyte solutions: DNA and hydrolyzed Polyacrylamide. Changing the salt concentration in the solutions allows us to change the flexibility of the polymer chains.
Amarouchene, Yassine +3 more
core +2 more sources
Spin and Charge Control of Topological End States in Chiral Graphene Nanoribbons on a 2D Ferromagnet
Advanced Materials, EarlyView.Chiral graphene nanoribbons on a ferromagnetic gadolinium‐gold surface alloy display tunable spin and charge states at their termini. Atomic work function variations and exchange fields enabe transitions between singlet, doublet, and triplet configurations.
Leonard Edens +8 more
wiley +1 more source
Investigation of Heat and Drag Reduction Induced by Forward-Facing Cavity in Hypersonic Flow
AerospaceThe design of heat and drag reduction systems for hypersonic vehicles has garnered widespread global attention. In this study, the Navier–Stokes equations and the SST k-ω turbulence model are employed to establish a simulation model for heat and drag ...
Ning Ding, Jianlong Chang, Junhui Liu
doaj +1 more source
Review of mechanical research and aerodynamic drag reduction of bionic surface micro-structures
Journal of Hebei University of Science and Technology, 2017 Some typical living creatures with a non-smooth surface in nature are introduced. The law of the fact that an appropriate micro-structure surface can transform the turbulent structure of near-wall region is briefly stated. The research status of the type
Zheng WANG, Tian LI, Ming LI, Jiye ZHANG
doaj +1 more source
Emergent Motility of Self‐Organized Particle‐Giant Unilamellar Vesicle Assembly
Advanced Materials, EarlyView.Giant unilamellar vesicles (GUVs), when combined with silica particles under alternating electric fields, spontaneously self‐assemble into motile structures. Asymmetric particle decoration induces fluid flows that propel the assemblies, enabling persistent motion and reversible control.
Selcan Karaz +5 more
wiley +1 more source
An investigation of the feasibility of active boundary layer thickening for aircraft drag reduction [PDF]
The feasibility of using a forward mounted windmilling propeller to extract momentum from the flow around an axisymmetric body to reduce total drag has been studied.
Ash, R. L., Koodalattupuram, C.
core +1 more source
Experimental Study of Friction Factor for Iraqi Crude Oil by Using Nano-Al2O3 as Drag Reduction Agent (DRA) [PDF]
, 2019 Thamer J. Mohammed +2 more
openalex +1 more source
Recent Advances in Collective Behaviors of Micro/Nanomotor Swarms
Advanced Materials, EarlyView.This review describes the driving forces behind collective motion, explores the self‐organization of micro/nano swarms across zero‐dimensional (0D), one‐dimensional (1D), two‐dimensional (2D), and three‐dimensional (3D) spaces, and highlights their potential in drug delivery, environmental monitoring, and smart devices.
Siwen Sun +4 more
wiley +1 more source
Drag Reduction of Bacterial Cellulose Suspensions
Advances in Mechanical Engineering, 2011 Drag reduction due to bacterial cellulose suspensions with small environmental loading was investigated. Experiments were carried out by measuring the pressure drop in pipe flow.
Satoshi Ogata +2 more
doaj +1 more source
Mercury and frame-dragging in light of the MESSENGER flybys: conflict with general relativity, poor knowledge of the physical properties of the Sun, data reduction artifact, or still insufficient observations? [PDF]
, 2011 Lorenzo Iorio
openalex +1 more source