A5066889961- Fluid Dynamics Simulations and Interactions
- Numerical methods in engineering
- Lattice Boltzmann Simulation Studies
- Advanced Mathematical Modeling in Engineering
- Advanced Numerical Methods in Computational Mathematics
- Solidification and crystal growth phenomena
- Numerical methods in inverse problems
- Fluid Dynamics and Heat Transfer
- Optical measurement and interference techniques
- Erosion and Abrasive Machining
- Heat and Mass Transfer in Porous Media
- Dam Engineering and Safety
- Computational Geometry and Mesh Generation
- Geotechnical Engineering and Underground Structures
- Surface Modification and Superhydrophobicity
- High-Temperature Coating Behaviors
- Topology Optimization in Engineering
- Nuclear materials and radiation effects
- Nonlinear Dynamics and Pattern Formation
- Metallurgy and Material Forming
- Intermetallics and Advanced Alloy Properties
- Particle Dynamics in Fluid Flows
- Aerosol Filtration and Electrostatic Precipitation
- Radioactive element chemistry and processing
- Optical Coherence Tomography Applications
Pacific Northwest National Laboratory
2023-2025
Chengdu University of Information Technology
2022-2023
University of Cincinnati
2017-2021
Texas A&M University
2021
University of Notre Dame
1985
ABSTRACT In nature, many complex multi‐physics coupling problems exhibit significant diffusivity inhomogeneity, where one process occurs several orders of magnitude faster than others temporally. Simulating rapid diffusion alongside slower processes demands intensive computational resources due to the necessity for small time steps. To address these challenges, we have developed an efficient numerical solver named Finite Difference informed Random Walker (FDiRW). this study, propose a...
The extraction of critical metals, such as rare earth elements (REEs), from dilute feedstocks like geothermal brine, mine tailings, and produced water is crucial for advancing clean energy technologies sustainable manufacturing. However, the efficient separation REE ions these sources remains challenging due to their similar chemical properties complex interactions within mixtures. This study explores an electrohydrodynamic-based approach separating a feedstock containing competing cations...
Summary A novel Lagrangian gradient smoothing method (L‐GSM) is developed to solve “solid‐flow” (flow media with material strength) problems governed by form of Navier‐Stokes equations. It a particle‐like method, similar the smoothed particle hydrodynamics (SPH) but without so‐called tensile instability that exists in SPH since its birth. The L‐GSM uses technique approximate field variables, based on standard GSM was found working well Euler grids for general fluids. Delaunay triangulation...
The phase field method is an effective tool for modeling microstructure evolution in materials. Many efficient implicit numerical solvers have been proposed simulations under uniform and time-invariant model parameters. We use Eyre's theorem to develop unconditionally stable solver spatially non-uniform time-varying accuracy, unconditional stability, efficiency of the validated against benchmarking examples. In its current form, requires a mesh may only be applied problems with periodic,...
Porous materials present significant advantages for absorbing radioactive isotopes in nuclear waste streams. To improve absorption efficiency treatment, a thorough understanding of the diffusion-advection process within porous structures is essential material design. In this study, we advancements volumetric lattice Boltzmann method (VLBM) modeling and simulating pore-scale geopolymer structures. These are created using phase field (PFM) to precisely control pore architectures. our VLBM...
Summary A novel smoothing particle hydrodynamics (SPH)‐like Lagrangian meshfree method, named as gradient method (L‐GSM), has been proposed to avoid the “tensile instability” issue in SPH simulation by replacing particle‐summation approximation technique with a local grid‐based GSM operator. The L‐GSM model proven effective and efficient when applied wide range of large deformation problems for fluids flowing solids two‐dimensional case. In this study, three‐dimensional (3D) numerical...
Centreline extraction is one of the critical processes structured light systems that play an increasingly important role in industry 4.0. This paper proposes a novel algorithm to extract centreline by combining improved skeleton thinning initial and grey centroid establish final centreline. It consists several steps: Firstly, image difference operation thresholding are undertaken, Canny edge detection applied locate approximate position laser stripe reduce matrix calculation cost; Secondly,...
With the development of intelligent manufacturing, production and assembly accuracy components in factories is increasing line with growing demand. However, traditional manual quality inspection inefficient, inaccurate, costly. To this end, digital optical imaging techniques are used to achieve inspection. during reconstruction process, high reflectivity object materials affects speed results. overcome these problems, study investigated three-dimensional (3D) based on laser scanning. It...
Modeling and studying the impact of angular particles are very helpful in understanding fundamental mechanisms erosive wear. However, majority previous studies focused on well-defined symmetrical particles, which not well representative abrasive particles. Hence, this study develops a mesh-free model based smoothed particle hydrodynamics (SPH) method to simulate impact(s) single multiple irregularly shaped ductile material. A novel procedure is proposed as polygonal rigid body through...
Abstract In this paper, we consider the optimal control of material microstructures. Such microstructures are modeled by so-called phase-field model. We study underlying physical structure model and propose a data-based approach for its control, along with comparison to using state-of-the-art reinforcement learning (RL) algorithm. Simulation results show feasibility optimally controlling such attain desired properties complex target
In this paper, the driven cavity problem was solved using finite difference scheme in stream function-vorticity formulation. A variable grid is adopted to capture more details and information area nearby wall. The Navier-Stokes equation rewritten as a particular form suitable grids. simulation, Reynolds number set 100 an example. velocity, vorticity streamline contour are produced by CFD developed paper then compared with those Ghia et. al. (1982) validate numerical scheme. It shows that...
In nature, many complex multi-physics coupling problems exhibit significant diffusivity inhomogeneity, where one process occurs several orders of magnitude faster than others in temporal. Simulating rapid diffusion alongside slower processes demands intensive computational resources due to the necessity for small time steps. To address these challenges, we have developed an efficient numerical solver named Finite Difference informed Random Walker (FDiRW). this study, propose a...
Erosion debris particles produced by particle impact erosion of pure Ni and a stainless steel have been examined in the scanning electron microscope for purpose determining whether micro-machining is an operative mechanism alumina particles. Macroscopic machining chips generally exhibit well-defined lamellae on side chip away from tool face, such are also observed micromachining abrasion or scratch testing. The aspect ratio large. In present work, ratios shapes formed at angles incidence...