Results 11 to 20 of about 19,450 (267)

Drag coefficient of vertically moving popcorns [PDF]

open access: yesRevista Brasileira de Ensino de Física
To take the students attention in physics lectures is always a challenge. The projectile motion is not an exception. Then, study of popcorn motion can be a way to introduce and motivate the students in this subject.
Eduardo do Carmo   +1 more
doaj   +1 more source

Aerodynamic study of three cars in tandem using computational fluid dynamics

open access: yesJournal of Mechanical Engineering and Sciences, 2021
Aerodynamics of vehicles account for nearly 80% of fuel losses on the road. Today, the use of the Intelligent Transport System (ITS) allows vehicles to be guided at a distance close to each other and has been shown to help reduce the drag coefficients ...
H. Abdul-Rahman   +2 more
doaj   +1 more source

Vortex shedding, flow separation, and drag coefficient in the flow past an ellipsoid of different aspect ratios at moderate Reynolds number

open access: yesAIP Advances, 2022
Incompressible viscous flow past an ellipsoid of different aspect ratios (ARs, the ratio of the vertical to the horizontal axis of the ellipsoid, is ranged from 0.5 to 2) at a Reynolds number of 300 is investigated numerically by a finite volume method ...
Junwei Li, Benmou Zhou
doaj   +1 more source

Numerical studies influence configuration fairing flap track airfoil type naca 4412 and naca 6412 character unmanned aerial vehicle (UAV)

open access: yesMATEC Web of Conferences, 2018
Wings have a function of changing the air flowing into force lift, and drag. It can reduce the drag is fairing flap track, where its function can reduce the obstacles caused by the effects of compressibility, fairing flap track also has a major influence
Pratama Handrico Ramelan   +1 more
doaj   +1 more source

Sources of Uncertainty in Atmospheric Drag: The Drag Coefficient

open access: yes, 2020
Atmospheric drag describes the main perturbing force of the atmosphere on the orbital trajectories of near-Earth orbiting satellites. The ability to accurately model atmospheric drag is critical for precise satellite orbit determination and collision avoidance.
Valerie Bernstein   +2 more
openaire   +1 more source

Drag Area, Frontal Area and Drag Coefficient in Cross-Country Skiing Techniques

open access: yesProceedings, 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
doaj   +1 more source

A Novel Canopy Drag Coefficient Model for Analyzing Urban Wind Environments Based on the Large Eddy Simulation

open access: yesEnergies, 2021
It is very challenging to capture the drag effects for the computational fluid dynamics numerical simulations of the urban canopy wind environment.
Lian Shen   +5 more
doaj   +1 more source

Determination of Seebeck coefficient originating from phonon-drag effect using Si single crystals at different carrier densities

open access: yesScientific Reports, 2023
The phonon-drag effect is useful for improving the thermoelectric performance, especially the Seebeck coefficient. Therefore, the phonon and electron transport properties of Si single crystals at different carrier densities were investigated, and the ...
Masataka Hase   +5 more
doaj   +1 more source

Drag Reduction Research on Fusion Winglet

open access: yesHangkong gongcheng jinzhan, 2018
Effectively decreasing induced drag is of important significance for the aircraft to reduce the fuel consumption and increase the flight range. Numerical simulation with CFD methods are carried out to obtain the aerodynamic characteristics, especially ...
Ma Yumin, Wei Jianlong
doaj   +1 more source

Predicting the Drag Coefficient Characteristics of Ocean Bottom Unit (OBU) Float Array Model for Early Warning Tsunami Systems Using Computational Fluid Dynamics (CFD) Method

open access: yesMekanika, 2023
The early tsunami warning system encompasses several complex components, one of which is the Ocean Bottom Unit (OBU) floater. This paper discusses the performance of various types of floater arrays for tsunami early warning systems using Computational ...
Yudiawan Fajar Kusuma   +4 more
doaj   +1 more source

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