Drag Reduction Through Air-Trapping Discrete Grooves in Underwater Applications
Journal of Marine Science and EngineeringVehicles travelling underwater experience drag and the frictional drag costs 60% of the total energy consumption. Using trapped air serving as a lubricant is a promising way to reduce drag.
You Nie, Ding Weng, Jiadao Wang
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Comparative computational analysis of drag-reducing devices for tractor-trailers [PDF]
, 2008 Constant rise in fuel price in recent times has caused manufacturers of heavy commercial vehicles (HCV) to turn to efficient aerodynamic design of trucks, wagons, tractors as well as trailers.
Malviya, Vihar +2 more
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String Shooter’s overall shape in ambient air
Emergent Scientist, 2020 In this article, we study the behaviour of a looped string launched in ambient air using motorised wheels. We show that the loop, once it reaches its stationary state, is either in the pulley or the air-lifted state.
Abello Margaux +3 more
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Change in drag, apparent slip and optimum air layer thickness for laminar flow over an idealised superhydrophobic surface [PDF]
, 2013 Analytic results are derived for the apparent slip length, the change in drag and the optimum air layer thickness of laminar channel and pipe flow over an idealised superhydrophobic surface, i.e. a gas layer of constant thickness retained on a wall.
Newton, M.I. +13 more
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Impact of Variable Atmospheric and Oceanic Form Drag on Simulations of Arctic Sea Ice [PDF]
, 2014 Over Arctic sea ice, pressure ridges and floe and melt pond edges all introduce discrete obstructions to the flow of air or water past the ice and are a source of form drag.
Laxon, Seymour W. +19 more
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Experimental and modelling investigation of the deformation, drag and break-up of drizzle droplets subjected to strong aerodynamics forces in relation to SLD aircraft icing [PDF]
, 2005 The distortion, drag and break-up of drizzle droplets subjected to strong aerodynamic forces was investigated to understand the pre-impact behaviour of droplets in aircraft icing from supercooled freezing drizzle.
Luxford, Geoffrey
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Study On the Drag of a Cylinder with Air Blowing in an Air Stream
Bulletin of JSME, 1971 It is well known that the value of a drag acting on a body in an air stream may change or be controlled with the blowing air from its surface. In this study, the change of the drag acting on the cylinder with and without blowing was studied. Three types of blowing were applied i. e.
UEMATSU, Tokio +3 more
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Drag Area, Frontal Area and Drag Coefficient in Cross-Country Skiing Techniques
Proceedings, 2018 The aim of this study was to investigate the air drag, frontal area and coefficient of drag of cross-country skiing classical and free style techniques. One highly skilled cross-country skier performed skiing-like classical and free style techniques on a
Mats Ainegren, Patrik Jonsson
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Effectiveness of Using Compression Garments in Winter Racing Sports: A Narrative Review
Frontiers in Physiology, 2020 Nowadays, compression garments (CGs) are widely used in winter racing sports, such as speed skating, short-track speed skating, alpine skiing, and cross-country skiing.
Chenhao Yang +5 more
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An investigation into unsteady base bleed for drag reduction in bluff two-box SUVs [PDF]
, 2009 This paper discusses a preliminary investigation into the use of base bleed on a production SUV using CFD analysis. The paper shows the methods used in creating the computational model and conducting the analysis, and present the findings to date.
Kennedy, Johnathan J. +2 more
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