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Dec 5, 2024 | 
pubs.aip.org | Crystal Owens |Zengshun Chen |A-Man Zhang
where Introducing a viscous effect similar to that of turbulent viscosity might effectively scale the experimental liquid film thickness. Therefore, we assume that the dimensionless turbulent viscosity in the numerical calculations corresponds to the actual Reynolds number.
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Dec 4, 2024 | 
pubs.aip.org | Politecnico di Torino |Crystal Owens |Zengshun Chen |A-Man Zhang
In this study, computational fluid dynamics simulation was used to derive full understanding of a bubble rising in liquid metals with the presence of an external horizontal magnetic field. The major aim of the study was to develop new correlations for bubble velocity and stability in liquid metals. In-house code PSI-BOIL (Parallel SImulator of BOILing phenomena, developed by Paul Scherrer Institute, Switzerland) has been used for the simulations.
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Dec 4, 2024 | 
pubs.aip.org | Aerospace Engineering |Crystal Owens |Zengshun Chen |A-Man Zhang
Direct numerical simulations (DNSs) are conducted to investigate the modulations of large-scale motions (LSMs) on the turbulent/non-turbulent interfaces (TNTIs) in spatially developing compressible mixing layers with convective Mach numbers ( ) of 0.4 and 0.8. Turbulent statistics, including velocity profiles, turbulent Mach number, normalized growth rate, Reynolds stress, and velocity spectrum, are analyzed to validate the DNS data.
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Dec 4, 2024 | 
pubs.aip.org | Crystal Owens |Zengshun Chen |A-Man Zhang
The last few years have witnessed an explosion of new numerical methods for filament hydrodynamics. Aside from their ubiquity in biology, physics, and engineering, filaments present unique challenges from an applied-mathematical point of view. Their slenderness, inextensibility, semiflexibility, and meso-scale nature all require numerical methods that can handle multiple lengthscales in the presence of constraints.
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Dec 2, 2024 | 
pubs.aip.org | Chongqing Jiaotong |Crystal Owens |Zengshun Chen |A-Man Zhang
The study of fish swimming behavior and locomotion mechanisms holds substantial scientific and engineering significance. With the rapid progression of artificial intelligence, the integration of artificial intelligence with high-precision numerical simulation methods presents a novel and highly efficient tool for investigating fish behavior. In this paper, we proposed a fish perception model that more closely reflects natural logic.
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Nov 22, 2024 | 
pubs.aip.org | Crystal Owens |A-Man Zhang |Zengshun Chen
Radial borehole fracturing is a kind of reservoir transformation technology combining radial borehole and hydraulic fracturing. The research on the influencing mechanism and main control factors of fracture propagation in radial borehole fracturing is still incomplete. This paper establishes a three-dimensional fracture propagation model of radial borehole fracturing based on the discrete lattice method, and carries out numerical simulation.
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Nov 22, 2024 | 
pubs.aip.org | Harcourt Butler Technical |Crystal Owens |A-Man Zhang |Zengshun Chen
The effect of tissue porosity on anomalous blood flow behavior in micro-blood vessels is investigated in this study. This model includes the effects of tissue porosity on the two-phase flow of blood in narrow tubes. It consists of a core region of erythrocyte suspension with non-Newtonian fluid and a peripheral layer of plasma surrounding the core. The governing partial differential equations are solved using the mathematical and analytical approach.
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Nov 19, 2024 | 
pubs.aip.org | Crystal Owens |A-Man Zhang |Zengshun Chen
Topics
Mechanical stress,
Polymers,
Viscoplasticity,
Non Newtonian fluids,
Viscoelastic flows,
Fluid flows,
Flow dynamics,
Rheology and fluid dynamics,
Viscoelastic fluid
Elastoviscoplastic (EVP) fluids represent a unique class of non-Newtonian fluids, exhibiting complex rheological behavior characterized by a combination of elastic, viscous, and plastic properties.
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Nov 13, 2024 | 
pubs.aip.org | Polymer Materials |Crystal Owens |A-Man Zhang |Zengshun Chen
All-polystyrene nanocomposites have been proved as an ideal model system due to the identical chemistry of the nanoparticles and the polymer matrix. Previous neutron scattering measurements have confirmed that the nanoparticles are homogeneously dispersed in the polymer matrix when the radius of the nanoparticles is smaller than the radius of gyration of the polymer chains.
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Nov 12, 2024 | 
pubs.aip.org | Materials Engineering |Crystal Owens |A-Man Zhang |Zengshun Chen
The use of thermal waves as a potential propulsion method has been investigated. The test flow system involves two horizontal parallel plates, one fixed and exposed to thermal waves and the other allowed to move. The propulsive effect is quantified using the velocity of this plate. It is shown that, in general, the plate moves opposite to the wave direction, but its characteristics depend on whether the waves have subcritical or supercritical amplitudes.
