An apparent viscosity function for shear thickening fluids

Galindo-Rosales, Francisco J.; Rubio-Hernández, F.J.; Sevilla, A.

doi:10.1016/j.jnnfm.2011.01.001

Cited by 134 publications

(79 citation statements)

References 32 publications

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“…Because for both the N-parallel FENE-P constitutive model and the traditional model, it can be proved that the FENE-P constitutive model is monotonic for the relation of apparent viscosity and share rate. The shear thickening phenomenon of the surfactant solution can be depicted by using a piecewise definition, such as the work of Galindo-Rosales [16]. However, it requires the introduction of at least 11 parameters to determine the piecewise constitutive model, which is nearly not practical in the engineering application.…”

Section: Validation and Results Discussionmentioning

confidence: 99%

Study on an N-Parallel FENE-P Constitutive Model Based on Multiple Relaxation Times for Viscoelastic Fluid

Sun

et al. 2018

Lecture Notes in Computer Science

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Abstract. An N-parallel FENE-P constitutive model based on multiple relaxation times is proposed in this paper, which aims at accurately describing the apparent viscosity of viscoelastic fluid. The establishment of N-parallel FENE-P constitutive model and the numerical approach to calculate the apparent viscosity are presented in detail, respectively. To validate the performance of the proposed constitutive model, it is compared with the conventional FENE-P constitutive model (It only has single relaxation time) in estimating the apparent viscosity of two common viscoelastic fluids: polymer and surfactant solutions. The comparative results indicate the N-parallel FENE-P constitutive model can represent the apparent viscosity of polymer solutions more accurate than the traditional model in the whole range of shear rate (0.1s -1~1 000s -1 ), and the advantage is more noteworthy especially when the shear rate is higher (10s -1~1 000s -1 ). Despite both the proposed model and the traditional model can't capture the interesting shear thickening behavior of surfactant solutions, the proposed constitutive model still possesses advantage over the traditional one in depicting the apparent viscosity and first normal stress difference. In addition, the N-parallel FENE-P constitutive model demonstrates a better applicability and favorable adjustability of the model parameters.

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Section: Validation and Results Discussionmentioning

confidence: 99%

Study on an N-Parallel FENE-P Constitutive Model Based on Multiple Relaxation Times for Viscoelastic Fluid

Sun

et al. 2018

Lecture Notes in Computer Science

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“…It is shown in Figure 1 (Galindo-Rosales et al, 2009;Galindo-Rosales et al, 2011), where a slight shear thinning behaviour exists under low shear rate (zone 1). However, when the shear rate exceeds a critical shear rate ηc, the viscosity of STF increases rapidly with shear rate (zone 2) (Galindo-Rosales et al, 2011). STF are now used in bullet-proof and shock-absorption areas.…”

Section: Shear-thickening Effect Of Non-newtonian Fluidmentioning

confidence: 89%

Experimental study on shear thickening polishing method for curved surface

Lyu

Dong

Yuan

et al. 2017

IJNM

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Abstract:A new polishing method shear thickening polishing (STP) was proposed to improve the polishing efficiency in the process to obtain extremely smooth curved surfaces. A non-Newtonian fluid with shear thickening property was utilised as the base fluid of the polishing slurry, in which the abrasives were dispersed. In this study, the influence of polishing speed, abrasive concentration and abrasive size on the surface roughness and material removal rate were investigated by experiments. The experimental results revealed that the polishing speed has the greatest influence on the polishing effect. With the increase of the polishing speed, the material removal rate increases rapidly and smoother surfaces with better roughness can be obtained. Abrasive concentration affects the polishing results in a manner that is similar to polishing speed. Abrasive size seems to have no effect on the surface roughness, but material removal rate increases as the abrasive size decreases. Finally, surface roughness of bearing steel work-piece (Ø35 mm) was reduced rapidly from Ra = 105.95 nm to Ra = 6.99 nm after one hours' processing under the appropriate conditions. Keywords: polishing; non-Newtonian fluid; shear thickening; curved surface. 82 B. Lyu et al.Reference to this paper should be made as follows: Lyu, B., Dong, C., Yuan, J., Sun, L., Li, M. and Dai, W. (2017) Min Li is currently a PhD candidate in National Engineering Research Center for High Efficiency Grinding, Hunan University. His current research is curved surface polishing.Weitao Dai is currently a Master student of Ultra-Precision Machining Centre, Zhejiang University of Technology. His main field of study is curved surface polishing utilising non-Newtonian fluid. This paper is a revised and expanded version of a paper entitled 'Experimental study on shear thickening polishing method for curved surface' presented at

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“…Another alternative with a more suitable qualitative STF behavior was proposed by Galindo-Rosales et al 25 The equations for STF viscosity are given by Zð_ gÞ ¼…”

Section: Overview Of the Available Viscosity Modelingmentioning

confidence: 99%

Continuous phenomenological modeling for the viscosity of shear thickening fluids

Wei

Sun

et al. 2018

Nanomaterials and Nanotechnology

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In general, shear thickening fluids show a marked increase in viscosity beyond a critical shear rate, which can be attributed to the hydrodynamic clustering effects, where in any external energy acting on a shear thickening fluid is dissipated quickly. However, there is a lack of theoretical modeling to predict the viscosity curve of shear thickening fluids, which changes continuously with the increasing shear rate. In this article, a phenomenological continuous viscosity modeling for a class of shear thickening fluids is proposed. The modeling predicts shear thickening and thinning behaviors that are naturally exhibited by shear thickening fluids for high and high enough values of the shear rate. The result shows that the phenomenological modeling provides a very good fit for several independent experimental data sets. Therefore, the proposed modeling can be used in numerical simulations and theoretical analysis across different engineering fields.

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An apparent viscosity function for shear thickening fluids

Cited by 134 publications

References 32 publications

Study on an N-Parallel FENE-P Constitutive Model Based on Multiple Relaxation Times for Viscoelastic Fluid

Study on an N-Parallel FENE-P Constitutive Model Based on Multiple Relaxation Times for Viscoelastic Fluid

Experimental study on shear thickening polishing method for curved surface

Continuous phenomenological modeling for the viscosity of shear thickening fluids

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