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This paper investigates the effect of model scale and particle size distribution on the simulated macroscopic mechanical properties, unconfined …
In the entire particle size range of 120 nm–10 μm, the scattering efficiency calculated through PMT1 counting was consistent with the theoretical simulation. In the particle size range of 200 nm–10 μm, the transmission efficiency of PM was close to . The scattering efficiency of PM below 200 nm showed a downward trend.
From the fitting results of the particle size distribution in Fig. 2, the MMAD obtained in the experiment is between 0.36 and 0.59 µm, which is close to 0.78 µm obtained by Surya Narayana et al., indicating that metallic zinc can effectively simulate the particle size distribution of uranium aerosols generated from uranium materials under ...
In general, smaller particles improve the capacity retention as they reduce the diffusion length. 32-34 Besides from experimental studies, Mei et al. 35 and Du et al. 36 simulated the effect of particle size, in which they showed that the energy and power density increase with smaller particle size due to lower overpotential.
EDEM calculates the smallest particle size in the simulation (Rmin). You then set a grid cell size based on this particle size. 3 Rmin is the default value, typical ranges are 3-6 Rmin, the Estimate Cell Size option provides guidance on the optimal Cell Size for a specific simulation Time Step. The grid does not impact on the simulation results ...
It is noted that the inlet water is dyed with 0.5% mass concentration of methylene blue and does not alter the flow characteristics in simulation [69, 70] therefore, no advection-diffusion nor density differential are considered in simulation. Particle size of D/5 and D/10 are modeled and the artificial sound speed set as C 0 = 10(gH s) 0.5.
Simulations of in vitro population bioequivalence trials were conducted across a range of representative D 50 (number-weighted median particle diameter from a log-normal particle size distribution) and span (which is defined as ( frac{D_{90}-{D}_{10}}{D_{50}} ) where D 90 and D 10 are the number-weighted 90th and 10th …
In this work, a CFD–VMS–PBM combined model was developed to comprehend the characteristics of particle size distribution in a gas–liquid–solid …
But the porosity is still almost the same. The number of particles in the LB simulation NP ranges from 324 to 805, depending on porosity. A denser packing has a high number of particles. ... Macroscopically, many correlations have been proposed to estimate k as a function of porosity and particle size. Probably the most widely recognized is the ...
Johann Brehmer explains how simulation-based inference is used in particle physics and how tools such as the open-source Python library MadMiner can enhance the capabilities of data analysis.
A simulation of ice cloud particle size, humidity, and temperature measurements from the TWICE CubeSat Jonathan H. Jiang 1, Qing Yue, Hui Su1, Steven C. Reising2, Pekka P. Kangaslahti, William R. Deal3, Erich T. Schlecht1, Longtao Wu1, and K. Franklin Evans4 1Jet Propulsion Laboratory, California Institute of Technology, …
The CPFD simulation results of the riser are different (Shi et al., 2014), that is, the particle diameter is larger than the monodisperse particle size in certain small areas. The discrepancies result from this study being conducted on a full-loop CFB.
Table 2 presents details of the DEM simulations, including the size ratios, number and diameter of small and large particles. The large particle diameter was fixed at 6.3 mm.In each simulation, the total volumes of the small and large particles were assumed to be equal, which is similar to the authors' previous work (Menbari & …
Thus, a simulation study is performed to understand the influence of various microstructural properties such as particle size, porosity, and tortuosity on the transport …
The variations of total and local packing density with vibrations and particle size were investigated. The simulation results suggest that there are optimal values for the two vibration parameters at which the closest packing is obtained. Further increase in the particle size decreases the density and slightly shifts these peaks to the lower ...
This paper investigates the effect of model scale and particle size distribution on the simulated macroscopic mechanical properties, unconfined compressive strength (UCS), Young's modulus and Poisson's ratio, using the three-dimensional particle flow code (PFC3D). Four different maximum to minimum particle size (d max/d min) …
Ansys Rocky fosters particle mechanics simulation beyond traditional DEM. In 2023 R2, new SPH (Smoothed-Particle Hydrodynamics) ... You can set up particle groups with particle size distributions and mix simulations of different particle shapes. Rocky comes with default shapes that you can use out-of-the-box or modify to match your particles ...
Viewed 2k times. 1. I try to use 2.82 to play fluid simulation. First I use default size and run simulation and get some result. The particles seem well in view port (as my Screenshot). My domain size is 1.919 and my flow behavior is Geometry. It seem the particles are separate. Here is my question. When I scale down both domain and flow …
Pump gas molecules to a box and see what happens as you change the volume, add or remove heat, and more. Measure the temperature and pressure, and discover how the properties of the gas vary in relation to …
The breakage characteristics of BPM with different single particle sizes and mixed particle sizes during the compaction process were simulated and analyzed. On …
Johann Brehmer explains how simulation-based inference is used in particle physics and how tools such as the open-source Python library MadMiner can …
A particle in this simulation is represented as a small sphere: blue for nitrogen (78% of the particles in air), red for oxygen (21% of the particles in air) and yellow for argon (about 1% of the particles in air). ... We've made the box smaller by a factor of eight, but the particles are still the same size as those in the previous section ...
The particle-size distribution of adsorbents usually plays an important role on the adsorption performance. In this study, population balance equation (PBE) is utilized in the simulation of an adsorption process to model the time-dependent adsorption amount distribution on adsorbent particles of a certain size distribution.
In addition, during the particle size influence studying, only a single particle size is considered and the influence of mixed particle size on mechanical characteristics is hardly studied. Thus, based on the discrete element numerical simulation, a novel method for the broken coal sample compaction simulation was proposed in this paper.
Therefore, an NPV seemed more accurate in predicting dissolution in high solubility than low solubility conditions, although other simulation parameters, such as particle size and particle motion definition can affect the accuracy of the prediction, as will be discussed. 4.3.2. Particle size distribution vs median particle size
For particle simulation, there is an option for storing three-dimensional positions, forces, torques, etc., as an array of structures (AoS) or as a structure of arrays (SoA). In the …
An ensemble machine learning model was created to predict dried particle size across pilot and production scale spray dryers, with prediction errors between −7.7% and 18.6% (25th/75th percentiles) for a hold-out evaluation set. Shapley additive explanations identified how changes in formulation and process parameters drove …
The particle size is too huge and the simulation is broken (the fluid disappears). I have set the Resolution Divisions to 100 and Time scale to 0.2. The Particle Radius is 0.0001. I tried to play with this value, but it didn't do anything. Look at the screenshot. fluid-simulation;
Herein, a micromechanical approach for DEM simulation has been used to evaluate the drained/undrained behavior of binary-graded soil by considering the effect of particle size ratio, fines content, initial packing density and confining pressure. ... Increasing the particle size ratio from 2.5 to 7.1 reduced the percentage of coarse–fine ...
Laser powder bed fusion (LPBF) has the advantages of rapid and customized production and has gradually been used in aerospace, biomedicine, and other fields. However, the current LPBF technology still faces many obstacles, such as the failure to fully explore the influence of the powder layer parameters (particle size distribution, thickness …
Simulation details. We perform Monte Carlo ... Pulkkinen, O. & Merikoski, J. Cluster size distributions in particle systems with asymmetric dynamics. Phys. Rev. E 64, 056114 (2001).
It is presumed that the particle size itself, ... The presented simulation results indicate the highest current densities in coarse and large-scale PSDs at the larger particles, which can also explain why a significantly lower degree of exfoliation is found at the smaller particles in experiments. 9.
Considering the effect of particle size distribution of electrode materials, it is necessary to weighted average of three sets of simulation results according to the proportion of different particle sizes to obtain the final terminal voltage. ... The stress distribution of the electrode particles obtained by simulation can provide a basis for ...
