A new approach to fluid–structure interaction within graphics hardware accelerated smooth particle hydrodynamics considering heterogeneous particle size distribution

Eghtesad, Adnan; Knežević, Marko

doi:10.1007/s40571-017-0176-1

Cited by 11 publications

(3 citation statements)

References 75 publications

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“…Among the different grades of aluminum, the alloy 6061 (AL6061) is inexpensive, readily available, corrosion resistant, and highly machinable. The speed of sound in AL6061 is 6320 m/s (vs. 1482 m/s in water), which assures a high acoustic impedance mismatch between microchannel walls (17.06 × 10 6 kg m −2 s −1 ) and the aqueous solutions (water ~ 1.48 × 10 6 kg m −2 s −1 ) in the channel [18, 25]. This is particularly useful in bulk acoustofluidic devices that require a rigid material to serve as an efficient carrier of acoustic energy that is launched into the channel to create a resonance acoustic field within the fluid.…”

Section: Resultsmentioning

confidence: 99%

“…While we expect these devices will be useful in general for microfluidic applications, our implementation in aluminum based devices has specific relevance for BAW applications. Aluminum exhibits a high acoustic impedance relative to aqueous solutions typically of interest in acoustofluidic applications [18, 25]. The efficacy of this new method is demonstrated via acoustic focusing of microspheres and cells in single and multinode acoustic focusing modes.…”

Section: Introductionmentioning

confidence: 99%

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Simple and inexpensive micromachined aluminum microfluidic devices for acoustic focusing of particles and cells

et al. 2018

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We introduce a new method to construct microfluidic devices especially useful for bulk acoustic wave (BAW)-based manipulation of cells and microparticles. To obtain efficient acoustic focusing, BAW devices require materials that have high acoustic impedance mismatch relative to the medium in which the cells/microparticles are suspended and materials with a high-quality factor. To date, silicon and glass have been the materials of choice for BAW-based acoustofluidic channel fabrication. Silicon- and glass-based fabrication is typically performed in clean room facilities, generates hazardous waste, and can take several hours to complete the microfabrication. To address some of the drawbacks in fabricating conventional BAW devices, we explored a new approach by micromachining microfluidic channels in aluminum substrates. Additionally, we demonstrate plasma bonding of poly(dimethylsiloxane) (PDMS) onto micromachined aluminum substrates. Our goal was to achieve an approach that is both low cost and effective in BAW applications. To this end, we micromachined aluminum 6061 plates and enclosed the systems with a thin PDMS cover layer. These aluminum/PDMS hybrid microfluidic devices use inexpensive materials and are simply constructed outside a clean room environment. Moreover, these devices demonstrate effectiveness in BAW applications as demonstrated by efficient acoustic focusing of polystyrene microspheres, bovine red blood cells, and Jurkat cells and the generation of multiple focused streams in flow-through systems. Graphical abstract The aluminum acoustofluidic device and the generation of multinode focusing of particles.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Simple and inexpensive micromachined aluminum microfluidic devices for acoustic focusing of particles and cells

et al. 2018

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“…The Smooth Particle Hydrodynamics method [12][13][14][15][16][17][18][19][20][21][22] is commonly used to describe a continuous fluid (or solid) as a group of interacting particles, despite each of these particles carries independent physical features such as different mass and dissimilar velocity. This method tends to characterize the continuous fluid by solving the behavior of the entire group of particles to simplify the problem and to determine the mechanical behavior of the entire system.…”

Section: Smooth Particle Hydrodynamics (Sph) Methodologymentioning

confidence: 99%

SPH Simulation of Interior and Exterior Flow Field Characteristics of Porous Media

Song

Rubinato

Gui

2020

Water

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At the present time, one of the most relevant challenges in marine and ocean engineering and practice is the development of a mathematical modeling that can accurately replicate the interaction of water waves with porous coastal structures. Over the last 60 years, multiple techniques and solutions have been identified, from linearized solutions based on wave theories and constant friction coefficients to very sophisticated Eulerian or Lagrangian solvers of the Navier-Stokes (NS) equations. In order to explore the flow field interior and exterior of the porous media under different working conditions, the Smooth Particle Hydrodynamics (SPH) numerical simulation method was used to simulate the flow distribution inside and outside a porous media applied to interact with the wave propagation. The flow behavior is described avoiding Euler’s description of the interface problem between the Euler mesh and the material selected. Considering the velocity boundary conditions and the cyclical circulation boundary conditions at the junction of the porous media and the water flow, the SPH numerical simulation is used to analyze the flow field characteristics, as well as the longitudinal and vertical velocity distribution of the back vortex flow field and the law of eddy current motion. This study provides innovative insights on the mathematical modelling of the interaction between porous structures and flow propagation. Furthermore, there is a good agreement (within 10%) between the numerical results and the experimental ones collected for scenarios with porosity of 0.349 and 0.475, demonstrating that SPH can simulate the flow patterns of the porous media, the flow through the inner and outer areas of the porous media, and the flow field of the back vortex region. Results obtained and the new mathematical approach used can help to effectively simulate with high-precision the changes along the water depth, for a better design of marine and ocean engineering solutions adopted to protect coastal areas.

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Field fluctuations viscoplastic self-consistent crystal plasticity: Applications to predicting texture evolution during deformation and recrystallization of cubic polycrystalline metals

Riyad,

Knezevic

2023

Acta Materialia

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A new approach to fluid–structure interaction within graphics hardware accelerated smooth particle hydrodynamics considering heterogeneous particle size distribution

Cited by 11 publications

References 75 publications

Simple and inexpensive micromachined aluminum microfluidic devices for acoustic focusing of particles and cells

Simple and inexpensive micromachined aluminum microfluidic devices for acoustic focusing of particles and cells

SPH Simulation of Interior and Exterior Flow Field Characteristics of Porous Media

Field fluctuations viscoplastic self-consistent crystal plasticity: Applications to predicting texture evolution during deformation and recrystallization of cubic polycrystalline metals

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