Electro-Structured Fluid Seals

Atkin, R. J.; Ellam, D. J.; Bullough, W. A.

doi:10.1106/104538902030331

Cited by 2 publications

(1 citation statement)

References 4 publications

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“…Nevertheless, in practice, with common fluids and macroscopic components, using a variable viscosity concept might not be possible or would be difficult to implement in several cases. For this reason, magnetorheological (MR) [1,2] and electrorheological (ER) [3][4][5][6][7][8] fluids have emerged, which have the ability to control the fluid viscosity with external magnetic and electric fields, respectively. A continuous control of the viscosity would require additives, when using a common fluid [9][10][11] but without applying external force fields.…”

Section: Introductionmentioning

confidence: 99%

Colloidal Shear-Thickening Fluids Using Variable Functional Star-Shaped Particles: A Molecular Dynamics Study

Salehin

Papanikolaou

2021

Materials

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Complex colloidal fluids, depending on constituent shapes and packing fractions, may have a wide range of shear-thinning and/or shear-thickening behaviors. An interesting way to transition between different types of such behavior is by infusing complex functional particles that can be manufactured using modern techniques such as 3D printing. In this paper, we perform 2D molecular dynamics simulations of such fluids with infused star-shaped functional particles, with a variable leg length and number of legs, as they are infused in a non-interacting fluid. We vary the packing fraction (ϕ) of the system, and for each different system, we apply shear at various strain rates, turning the fluid into a shear-thickened fluid and then, in jammed state, rising the apparent viscosity of the fluid and incipient stresses. We demonstrate the dependence of viscosity on the functional particles’ packing fraction and we show the role of shape and design dependence of the functional particles towards the transition to a shear-thickening fluid.

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Section: Introductionmentioning

confidence: 99%

Colloidal Shear-Thickening Fluids Using Variable Functional Star-Shaped Particles: A Molecular Dynamics Study

Salehin

Papanikolaou

2021

Materials

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Smart fluids: current and future developments

Stanway

2004

Materials Science and Technology

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A smart fluid comprises a suspension of micrometre-sized particles in a dielectric carrier liquid. The application of a suitable stimulus -either electrical or magnetic -causes a significant increase in the resistance to flow of the fluid. Current and future developments in smart fluids are reviewed, paying particular attention to electro-rheological (ER) and magneto-rheological (MR) fluids. ER fluids have been the focus of intense academic interest over several decades. However, not until the re-discovery of MR fluids did commercial exploitation finally occur. Both microscopic and macroscopic models of smart fluids will be described. The link with industrial applications is established by introducing the three modes of operation through which smart fluids are harnessed. Insight into the behaviour of smart fluids is obtained through the development of relatively simple quasi-steady and dynamic models. A concise summary of the latest industrial applications is provided. Future trends are then considered under the headings of smart fluid technology, modelling of smart fluids and, finally, engineering devices.MST/6012

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Electro-Structured Fluid Seals

Cited by 2 publications

References 4 publications

Colloidal Shear-Thickening Fluids Using Variable Functional Star-Shaped Particles: A Molecular Dynamics Study

Colloidal Shear-Thickening Fluids Using Variable Functional Star-Shaped Particles: A Molecular Dynamics Study

Smart fluids: current and future developments

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