Bioinspired Drag Reduction of Cavities Induced by Janus Nanostructure Interfaces on Hydrophobic Spheres Plunging into Water with a Low Speed
Sign Up to like & getrecommendations! Published in 2023 at "Advanced Materials Interfaces"
DOI: 10.1002/admi.202202372
Abstract: Form drag of the blunt object occurs from the pressure difference due to the physical dimensions of the object obstructing and altering the flow of the fluid. The innovative approach of form drag reduction is… read more here.
Keywords: janus nanostructure; water; drag reduction; nanostructure ... See more keywords
Influence of perforated gas diffusion layer micropore shape parameters on water removal in a proton exchange membrane fuel cell flow channel
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Energy Research"
DOI: 10.1002/er.6724
Abstract: To investigate and optimize the water‐gas transport performance of microporous gas diffusion layer (GDL) flow channel, the simulation of computational fluid dynamics (CFD) is implemented with the volume of fluid method (VOF). The impact of… read more here.
Keywords: flow channel; water; water removal; drag reduction ... See more keywords
Research on the drag reduction mechanism of antlion (Myrmeleon sagax) larvae nonsmooth structural surface
Sign Up to like & getrecommendations! Published in 2019 at "Microscopy Research and Technique"
DOI: 10.1002/jemt.23419
Abstract: Antlion (Myrmeleon sagax) larvae live in sandy soil and possess the ability to enter soil quickly. In this article, the hierarchical structure of the nonsmooth surface of antlion larvae was obtained using a scanning electron… read more here.
Keywords: structural surface; nonsmooth structural; surface; drag reduction ... See more keywords
Parametric investigation of friction drag reduction in turbulent flow over a flexible wall undergoing spanwise transversal traveling waves
Sign Up to like & getrecommendations! Published in 2018 at "Experiments in Fluids"
DOI: 10.1007/s00348-018-2559-3
Abstract: Active friction drag reduction by spanwise transversal traveling surface waves is investigated experimentally in a fully developed zero-pressure gradient (ZPG) turbulent boundary layer (TBL). The spanwise transversal traveling wave of an aluminum surface is generated… read more here.
Keywords: reduction; friction; transversal traveling; spanwise transversal ... See more keywords
Bubbly drag reduction accompanied by void wave generation inside turbulent boundary layers
Sign Up to like & getrecommendations! Published in 2018 at "Experiments in Fluids"
DOI: 10.1007/s00348-018-2621-1
Abstract: Frictional drag reduction, a technique by which bubbles are injected into the turbulent boundary layer surrounding the hull of a marine vessel, is now at the stage of practical applications. In achieving drag reduction, void… read more here.
Keywords: reduction; void waves; void wave; turbulent boundary ... See more keywords
Effect of bubble distribution on wall drag in turbulent channel flow
Sign Up to like & getrecommendations! Published in 2019 at "Experiments in Fluids"
DOI: 10.1007/s00348-019-2773-7
Abstract: Skin-friction drag reduction in (water) turbulent boundary layers using bubble injection has been studied for some time. Ceccio (Annu Rev Fluid Mech 42:183–203, 2010) and Murai (Exp Fluids 55(7):1–28, 2014) have compiled drag reduction data… read more here.
Keywords: wall; drag reduction; injection; channel ... See more keywords
Investigation and optimization of appendage influence on the hydrodynamic performance of AUVs
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Marine Science and Technology"
DOI: 10.1007/s00773-018-0558-y
Abstract: Navigational range is an important attribute of autonomous underwater vehicles (AUVs), and drag reduction efforts have been pursued to improve overall efficiency. Improved efficiency results in a more capable vehicle over all. Historically, the majority… read more here.
Keywords: optimization; drag reduction; influence; hydrodynamic performance ... See more keywords
Turbulent Drag Reduction by Uniform Blowing Over a Two-dimensional Roughness
Sign Up to like & getrecommendations! Published in 2017 at "Flow, Turbulence and Combustion"
DOI: 10.1007/s10494-017-9858-2
Abstract: Direct numerical simulation (DNS) of turbulent channel flow over a two-dimensional irregular rough wall with uniform blowing (UB) was performed. The main objective is to investigate the drag reduction effectiveness of UB on a rough-wall… read more here.
Keywords: rough wall; two dimensional; wall; drag ... See more keywords
Wall Oscillation Induced Drag Reduction Zone in a Turbulent Boundary Layer
Sign Up to like & getrecommendations! Published in 2019 at "Flow, Turbulence and Combustion"
DOI: 10.1007/s10494-018-9979-2
Abstract: Spanwise oscillation applied on the wall under a turbulent boundary layer flow is investigated using direct numerical simulation. The temporal wall-forcing produces a considerable drag reduction (DR) over the region where oscillation occurs. Three simulations… read more here.
Keywords: wall; drag reduction; oscillation; boundary layer ... See more keywords
Drag-reducing underbody flow of a heavy vehicle with side skirts
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Visualization"
DOI: 10.1007/s12650-016-0401-7
Abstract: Aerodynamic drag reduction in heavy vehicles is a very interesting research topic that is relevant for both the industries and the environment. The underbody flow induces considerable drag as it passes through the underside of… read more here.
Keywords: drag reduction; vehicle; side skirts; underbody flow ... See more keywords
Drag reduction methods at solid-liquid interfaces
Sign Up to like & getrecommendations! Published in 2021 at "Friction"
DOI: 10.1007/s40544-021-0502-8
Abstract: Friction drag is a nonnegligible matter when relative motion happens between solid and liquid phase, which brings many inconveniences in ship navigation, fluid transportation, microfluid devices, etc. Thereby various methods have been developed focusing on… read more here.
Keywords: reduction methods; reduction; friction drag; solid liquid ... See more keywords