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Shear Thickening of Concentrated Suspensions: Recent
Shear thickening is the increase of the apparent viscosity as shear rate or shear stress increases This phenomenon is pronounced in concentrated (dense) suspensions of both colloidalscale and larger particles, with an abrupt form, known as discontinuous shear2022年8月1日· Shear thickening in dense suspension: A mastercurve and “roll” of friction The mechanism of shear thickening in dense suspensions has been linked to aShear thickening in dense suspension: A mastercurve and “roll” of
(PDF) Tuning the shear thickening of suspensions through surface
2022年7月19日· PDF | Shear thickening denotes the reversible increase in viscosity of a suspension of rigid particles under external shear This ubiquitous phenomenon|of the suspensions generally leads to an uncontrollable change ofrheologicalbehaviorandotherproperties;thus,adjustingthe thickening behavior in aControlling the shear thickening behavior of suspensions by
Tunable shear thickening in suspensions | PNAS
2016年9月12日· 113 ( 39) 1077410778 https://doi/101073/pnas 0 0 Significance When a concentrated suspension is strained, its viscosity can increase radically2022年7月19日· Shear thickening denotes the reversible increase in viscosity of a suspension of rigid particles under external shearTuning the shear thickening of suspensions through surface
Shearthickening of dense bidispersed suspensions | Meccanica
2023年3月13日· Shear thickening has been classified into two regimes, named after the macroscopic behaviour of the dense suspensions: continuous shear thickening (CST),Shear thickening in stable dense colloidal suspensions is a reversible phenomenon and no hysteresis is observed in the flow curve measurements However, a reduction in theShear thickening behavior in dense repulsive and
Shear thickening behavior in dense repulsive and
Shear thickening in stable dense colloidal suspensions is a reversible phenomenon and no hysteresis is observed in the flow curve measurements However, a reduction in the stability of colloids promotes2019年1月25日· The thickening degree could be interpreted by friction theory The critical volume fraction corresponding to the onset of discontinuous shear thickening is determined by the friction coefficientControlling the shear thickening behavior of
(PDF) Tuning the shear thickening of suspensions through
2022年7月19日· Shear thickening denotes the reversible increase in viscosity of a suspension of rigid particles under external shear This ubiquitous phenomenon has been documented in a broad variety of2021年3月1日· Semidilute manyparticle suspensions up to a particle volume fraction of 01 are investigated The presented numerical results regarding the bulk rheological properties of the shearthickening behaviour agree quantitatively with recent experimental results of semidilute suspensions in a Boger fluidPrediction of shear thickening of particle suspensions in
Exploring the roles of roughness, friction and adhesion in Nature
2021年3月5日· Dense suspensions of colloidal or granular particles can display pronounced nonNewtonian behaviour, such as discontinuous shear thickening and shear jamming The essential contribution of2020年7月3日· Figure 1b shows the suspension viscosity \(\eta =\sigma /\dot{\gamma }\) plotted against \(\dot{\gamma }\), illustrating an increasing degree of shear thickening with increasing ϕ as well as theFlowtofracture transition and pattern formation in a discontinuous
Study of mechanical property of shear thickening fluid (STF) for
2021年4月28日· For lower suspension depth, thickening behavior of STF is earlier and more obvious Thickening characteristics of STF were observed at different interface conditions, which revealed that mechanical property of STF is nearly linear with larger cross area of the rod; and the roughness of the rod surface has a slight effect on theSuspensions of polymeric nano and microparticles are fascinating stressresponsive material systems that, depending on their composition, can display a diverse range of flow properties under shear, such as drastic thinning, thickening, and even jamming (reversible solidification driven by shear) However, investigations to date have almost exclusivelyLeveraging the Polymer Glass Transition to Access Thermally
Shearthickening of dense bidispersed suspensions | Meccanica
2023年3月13日· Considering bidispersed suspensions, several parameters can be used to control the shearthickening regime Surely, one of those is the friction coefficient of the particles, that can be tuned to increase or reduce the viscosity in the thickened regime [ 23, 24, 37, 40 ] Among the other parameters, the dispersion ratio and the relative2018年6月1日· The preparation of liquid oral dosage forms for paediatric patients may pose a challenge on pharmacies Marketed readytouse suspension vehicles do have advantages and disadvantages In order to overcome the disadvantages a dedicated suspension vehicle, which can be prepared by every pharmacy, was cooperativelyDevelopment and Preparation of Oral Suspensions for Paediatric
Revealing the frictional transition in shearthickening suspensions
The sudden and severe increase in the viscosity of certain suspensions above an onset stress is one of the most spectacular phenomena observed in complex fluids This shear thickening, which has major implications for industry, is a longstanding puzzle in softmatter physics Recently, a frictional transition was conjectured to cause this2020年12月18日· Previous studies on shearthickening suspensions have based their analysis on this feature to explain for instance the emergence of random fluctuations 37 reported initially by Boersma et al 38Surfacewave instability without inertia in shearthickening suspensions
Physics Friction’s Role in Shear Thickening
2013年11月18日· What has not been known is how interactions between the particles in suspension lead to this behavior, called discontinuous shear thickening (DST) And so far, simulations haven’t been able to predict2018年5月1日· Shear thickening is a ubiquitous rheological phenomenon whereby dense suspensions of particles in a fluid exhibit a viscosity increase at high shear, which can turn into a viscosity divergenceRoughnessdependent tribology effects on
PHYSICAL REVIEW RESEARCH4, (2022)
PHYSICAL REVIEW RESEARCH4, (2022) Tuning the shear thickening of suspensions through surface roughness and physicochemical interactions Philippe Bourrianne ,1 Vincent Niggel , 1Gatien Polly,1,2 Thibaut Divoux ,2,3 and Gareth H McKinley 1Hatsopoulos Microfluids Laboratory, Department of Mechanical Engineering, MIT, 77Shear thickening is the increase of the apparent viscosity as shear rate or shear stress increases This phenomenon is pronounced in concentrated (dense) suspensions of both colloidalscale and larger particles, with an abrupt form, known as discontinuous shear thickening, observed as the maximum flowable solid fraction is approached AnShear Thickening of Concentrated Suspensions: Recent
Discontinuous shear thickening in Brownian suspensions by
2015年11月30日· The rheology of dense suspensions is of considerable theoretical and technological importance, yet the shear rheology of even the simplest case of a suspension of hard spheres in a Newtonian suspending fluid is incompletely understood ()Many of the features observed in these suspensions, including shear thinning or thickening (3, 4)2022年9月5日· The thickening behavior of the suspension, that is, the time change in the interface position between the supernatant and suspension was observed by a digital camera applying a DC electric field for 1 h Then, the DC electric field was terminated, and the electrodes were removed from the suspension containerThickening of aqueous nanoparticle suspension using DC electric
Discontinuous shear thickening in dense suspensions:
2022年8月1日· Data from simulation method of Mari et al [10] illustrating shear thickening regimes Download : Download highres image (121KB) Download : Download fullsize image; Fig 6 Shear rate dependence from Stokesian Dynamics simulations of Brownian hard sphere suspensions at the volume fractions ϕ shown, in comparison with2023年9月4日· More generally, it illustrates how the hydrodynamics of a shearthickening suspension with a strongly reentrant rheology can lead to a marginally reentrant, although steep, drag curve JFM classification Complex Fluids: Suspensions Instability: TaylorCouette flow TypeDrag of a shearthickening suspension on a rotating cylinder
(PDF) The Physics of Dense Suspensions ResearchGate
2022年3月10日· Here, we reveal how shearthickening suspensions flow, shedding light onto as yet nonunderstood complex dynamics reported in the literature When shear thickening is important,2022年5月25日· Fig 1 Dense suspension rheology: Representative rheology curves showing the evolution of discontinuous shear thickening (DST) with an increase in the volume fraction The presented data is for cornstarch particles suspended in a solution of 85% glycerol and 15% water by weight, for several values of mass fraction ϕ m (a)Shear thickening in dense suspension: A mastercurve and “roll”