Results 31 to 40 of about 376,515 (294)

Holography and drag force in thermal plasma of non-commutative Yang-Mills theories in diverse dimensions

, 2009
We use holography and a string probe approach to compute the drag force on a quark moving in a thermal plasma of non-commutative Yang-Mills (NCYM) theories in various dimensions.
Aharony, Alishahiha, Armesto, Benincasa, Benincasa, Brandhuber, Buchel, Buchel, Buchel, Buchel, Buchel, Buchel, Buchel, Cai, Casalderrey-Solana, Gubser, Gubser, Gubser, Hashimoto, Herzog, Itzhaki, Kovtun, Landsteiner, Lin, Liu, Liu, Maldacena, Maldacena, Maldacena, Mas, Mas, Matsuo, Policastro, Policastro, Policastro, Rey, Rey, Seiberg, Shibaji Roy, Shuryak, Shuryak, Son, Son, Witten   +43 more
core   +1 more source

Resistance Force on a Spherical Intruder in Fluidized Bed

Journal of Applied Fluid Mechanics, 2020
Insertion of large objects or intruders into granular material is common both in nature and industrial applications. During penetration due to collision between intruder and granular particles, intruder experiences resistance or drag force (analogy from ...
A. A. Zaidi
doaj  

Computational Fluid Dynamics and Experimental Analysis of a Wind Turbine Blade’s Frontal Section with and without Arrays of Dimpled Structures

Energies, 2022
Horizontal axis wind turbines are used for energy generation at domestic as well as industrial levels. In the wind turbines, a reduction in drag force and an increase in lift force are desired to increase the energy efficiency.
Shahid Aziz, Abdullah Khan, Imran Shah, Tariq Amin Khan, Yasir Ali, Muhammad Umer Sohail, Badar Rashid, Dong Won Jung   +7 more
doaj   +1 more source

Optimization of Drag Reducing Shark Inspired Blade-Shape Riblet Surfaces in External Flow

Journal of Applied Fluid Mechanics, 2020
The main goal of this research is to study the drag reduction capabilities of blade-shape riblet surfaces in external flows. For this purpose, the ability of riblet surfaces for drag reduction of an underwater hydrodynamic model has been investigated ...
M. Monfared, M. A. Alidoostan
doaj  

Granular Impact: A Grain-scale Approach

, 2015
This work summarizes a series of studies on two-dimensional granular impact, where an intruding object strikes a granular material at high speed. Many previous studies on granular impact have used a macroscopic force law, which is dominated by an ...
Allen, Ambroso, Atman, Bassett, Baxter, Bi, Brendel, Clark, Clark, Clark, Cundall, Da Silva, Daniels, Dantu, de Bruyn, Drescher, Drescher, Forrestal, Geng, Geng, Geng, Goldenberg, Goldman, Gómez, Howell, Kondic, Kondic, Krim, Liu, Majmudar, Majmudar, Nelson, Nesterenko, Nesterenko, Newhall, Pica Ciamarra, Poncelet, Puckett, Radjai, Ren, Schäfer, Seguin, Takehara, Tordesillas, Tsimring, Umbanhowar, Utter, Wakabayashi, Walsh, Zhang   +49 more
core   +1 more source

Preliminary study of software tracker usage to analyze inhibitory style on free fall movie events

MATEC Web of Conferences, 2018
This paper presents drag force analysis of free falling object using software tracker. We use video cupclips that have been embedded in this software. The video featured cupcakes to which hung a number of different paper clips were dropped simultaneously.
Susanti Seni, Mahen Ea Cahya Septia, Nuryantini Ade Yeti   +2 more
doaj   +1 more source

Drag Force, Jet Quenching, and AdS/QCD [PDF]

, 2006
In this note, two important transport observables in the RHIC experiment, relaxation time constant and jet quenching parameter, are calculated from an AdS/QCD model.
E. Witten, Eiji Nakano, J. M. Maldacena, Shunsuke Teraguchi, Wen-Yu Wen   +4 more
core   +5 more sources

Navigating new norms: a systematic review of factors for the development of effective digital tools in higher education

FEBS Open Bio, EarlyView.
What factors make for an effective digital learning tool in Higher Education? This systematic review identifies elements of a digital tool that published examples reveal to be features of an engaging and impactful digital tool. A systematic literature search yielded 25 research papers for analysis.
Akmal Arzeman, Jessica Haines, Connie Pritchard, Stephen Rutherford, Nigel Francis   +4 more
wiley   +1 more source

Modeling of indentation and slip of wedge punch

Инженерно-строительный журнал, 2017
To determine the load-carrying capacity of the drillpipe slip, it is necessary to calculate the drag force on the surface between the pipe and the slip. To improve such capacity, the grip surface is provided with teeth that can indent into the pipe body.
Artem Semenov, Sergey Semenov, Boris Melnikov, Vadim Tikhonov   +3 more
doaj   +1 more source

Effect of Biomimetic Surface Geometry, Soil Texture, and Soil Moisture Content on the Drag Force of Soil-Touching Parts

Applied Sciences, 2021
Soil adhesion is a major problem for agricultural machinery, especially in sticky soils within the plastic range. One promising and practical way to minimize soil–tool adhesion is to modify the surface geometry to one inspired by soil-burrowing animals ...
Abouelnadar El. Salem, Hongchang Wang, Yuan Gao, Xiantao Zha, Mohamed Anwer Abdeen, Guozhong Zhang   +5 more
doaj   +1 more source