Assessment of Drag Reduction Devices Mounted on a Simplified Tractor-Trailer Truck Model [PDF]
Journal of Applied and Computational Mechanics, 2021 Aerodynamic drag reduction of tractor-trailer combination trucks is critically important to improve their fuel consumption which consequently results in lower emissions.
Terrance Charles, Zhiyin Yang, Yiling Lu
doaj +3 more sources
Computational Analysis of Turbulent Flow over a Bluff Body with Drag Reduction Devices [PDF]
Journal of Applied and Computational Mechanics, 2020 Reducing aerodynamic drag of heavy trucks is crucially important for the reduction of fuel consumption and hence results in less air pollution. One way to reduce the aerodynamic drag is the deployment of drag reduction devices at the rear of trucks and ...
Adam Abikan, Zhiyin Yang, Yiling Lu
doaj +2 more sources
Comparison of the Effectiveness of Drag Reduction Devices on a Simplified Truck Model through Numerical Simulation [PDF]
Modelling, 2022 The aerodynamic efficiency of trucks is very low because of their non-streamlined box shape, which is subject to practical constraints, leaving little room for improvement in terms of aerodynamic efficiency.
Terrance Charles, Zhiyin Yang
doaj +2 more sources
Active Control for Wall Drag Reduction: Methods, Mechanisms and Performance
IEEE Access, 2020 Active reducing the skin friction drag of vehicles (such as missiles, rockets, aircraft, high-speed train, submarines, etc.) during the navigation process can improve the respond speed effectively, save the energy consumption and increase the endurance ...
Lu Zhang, Xiaobiao Shan, Tao Xie
doaj +3 more sources
A novel aerodynamic drag-reduction mechanism using dolphin-inspired ultrasonic microvibrations [PDF]
Scientific ReportsAerodynamic drag, particularly viscous drag, is a significant source of energy loss in aircraft, with its reduction being critical for improving overall aerodynamic performance.
Dongyue Wang, Hao Liu
doaj +2 more sources
Synthesis and drag reduction properties of a hydrophobically associative polymer containing ultra-long side chains [PDF]
BMC Chemistry, 2023 Different from common hydrophobic associative polymers, a new hydrophobic associative polyacrylamide (HAPAM) with ultra-long side chains was synthesized and aimed to be used as drag reducer in this work.
Xianwu Jing +3 more
doaj +2 more sources
Prediction of Drag Reduction Rate in Turbulent Channel Flow Based on BP Neural Network [PDF]
E3S Web of Conferences, 2020 The technology of turbulent drag reduction by viscoelastic additives cannot be widely applied in practical engineering due to the difficulty in judging the effect of drag reduction.
Cao Yuchen, Yang Yongwen
doaj +1 more source
Research Progress of Air Lubrication Drag Reduction Technology for Ships
Fluids, 2022 Air lubrication is a promising drag reduction technology for ships because it is considered to reduce the skin-friction resistance of ships by changing the energy of turbulent boundary layers.
Hai An, Haozhe Pan, Po Yang
doaj +1 more source
Drag Characteristics and Reduction Test for Hub of Coaxial-rotor Helicopter
Hangkong gongcheng jinzhan, 2020 The drag of coaxial helicopter hub accounts is more than 50% of the total helicopter's waste drag, so it is necessary to research the drag characteristics and reduction design of the hub. Wind tunnel test is carried out for a coaxial helicopter hub model,
LONG Haibin, WU Yuping
doaj +1 more source
Coherent Near-Wall Structures and Drag Reduction by Spanwise Forcing [PDF]
, 2022 The effect of streamwise-traveling waves of spanwise wall velocity (StTW) on the quasistreamwise vortices (QSV) populating the near-wall region of turbulent channels is studied via a conditional averaging technique applied to flow snapshots obtained via ...
Gatti, D. +5 more
core +1 more source