Results 11 to 20 of about 696,670 (191)

Recent developments on manufacturing and characterization of fused quartz crucibles for monocrystalline silicon for photovoltaic applications

open access: yesOpen Ceramics, 2023
The dominating technology of solar cell production today is based on monocrystalline silicon, produced mostly by the Czochralski process. Recently, the solar cell industry, has started to move towards growing larger and better-performing ingots.
Gabriela Kazimiera Warden   +3 more
doaj   +1 more source

Investigation of a drag reduction on a circular cylinder in rotary oscillation [PDF]

open access: yes, 2001
Drag reduction in two-dimensional flow over a circular cylinder, achieved using rotary oscillation, was investigated with computational simulations. In the experiments of Tokumaru & Dimotakis (1991), this mechanism was observed to yield up to 80% drag ...
Leonard, A., Shiels, D.
core   +1 more source

Passive Control of Base Pressure: A Review

open access: yesApplied Sciences, 2021
In the present world, passive control finds application in various areas like flow over blunt projectiles, missiles, supersonic parallel diffusers (for cruise correction), the engine of jets, static testbeds of rockets, the ports of internal combustion ...
Ambareen Khan   +2 more
doaj   +1 more source

Spacecraft rendezvous by differential drag under uncertainties [PDF]

open access: yes, 2016
At low Earth orbits, differentials in the drag forces between spacecraft can be used for controlling their relative motion in the orbital plane. Current methods for determining the drag force may result in errors due to inaccuracies in the density models
Bevilacqua, Riccardo   +3 more
core   +1 more source

Model-based electrospinning process design for nanofibers production

open access: yesITM Web of Conferences, 2018
The main concept of the electrospinning process modeling is to overcome difficulties associated with the experimental-based optimization procedure. Thus, 3-dimensional polynomial models were discussed in this work.
Drąg Marlena, Drąg Paweł
doaj   +1 more source

Bubbly Turbulent Drag Reduction Is a Boundary Layer Effect [PDF]

open access: yes, 2007
In turbulent Taylor-Couette flow, the injection of bubbles reduces the overall drag. On the other hand, rough walls enhance the overall drag. In this work, we inject bubbles into turbulent Taylor-Couette flow with rough walls (with a Reynolds number up ...
Berg, Thomas H. van den   +3 more
core   +2 more sources

A Direct Optimization Algorithm for Problems with Differential-Algebraic Constraints: Application to Heat and Mass Transfer

open access: yesApplied Sciences, 2020
In this article, an optimization task with nonlinear differential-algebraic equations (DAEs) is considered. As a main result, a new solution procedure is designed. The computational procedure represents the sequential optimization approach.
Paweł Drąg
doaj   +1 more source

Drag enhancement and drag reduction in viscoelastic flow [PDF]

open access: yes, 2018
Creeping flow of polymeric fluid without inertia exhibits elastic instabilities and elastic turbulence accompanied by drag enhancement due to elastic stress produced by flow-stretched polymers.
Steinberg, Victor, Varshney, Atul
core   +4 more sources

Jenny Offill’s Dept. of Speculation and the Revival of Fragmentary Writing

open access: yesMiscelánea: A Journal of English and American Studies, 2017
The last decade has seen a revival of interest in novels that follow a fragmentary structure. David Mitchell’s Cloud Atlas (2005), J. M. Coetzee’s Diary of a Bad Year (2007) and Richard McGuire’s graphic novel Here (2014) are among the most notable ...
Wojciech Drąg
doaj   +1 more source

The Goldsmiths Prize and Its Conceptualization of Experimental Literature [PDF]

open access: yesPolish Journal of English Studies, 2019
In the aftermath of a critical debate regarding the Man Booker Prize’s adoption of ‘readability’ as the main criterion of literary value, Goldsmiths College established a new literary prize. The Goldsmiths Prize was launched in 2013
Wojciech Drąg
doaj  

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