Discrete phase method study of ball grid array underfill process using nano-silica filler-reinforced composite-encapsulant with varying filler loadings

2017 ◽  
Vol 72 ◽  
pp. 45-64 ◽  
Author(s):  
Fei Chong Ng ◽  
Aizat Abas ◽  
Z.L. Gan ◽  
M.Z. Abdullah ◽  
F. Che Ani ◽  
...  
Keyword(s):  
Ball Grid Array ◽  
Phase Method ◽  
Nano Silica ◽  
Reinforced Composite ◽  
Silica Filler ◽  
Discrete Phase Method ◽  
Discrete Phase

scholarly journals Concrete Erosion Modelling by Water Jet using Discrete Phase Method

2021 ◽  
Vol 1058 (1) ◽  
pp. 012032
Author(s):  
Rawaa H. Ismaeil ◽  
Ali N. Hilo ◽  
Thaar S. Al-Gasham ◽  
Ali Hameed Abd
Keyword(s):  
Water Jet ◽  
Phase Method ◽  
Discrete Phase Method ◽  
Discrete Phase ◽  
Erosion Modelling

Modelling coal gasification with CFD and discrete phase method

2006 ◽  
Vol 79 (4) ◽  
pp. 217-221 ◽  
Author(s):  
S.-P. Shi ◽  
S. E. Zitney ◽  
M. Shahnam ◽  
M. Syamlal ◽  
W. A. Rogers
Keyword(s):  
Coal Gasification ◽  
Phase Method ◽  
Discrete Phase Method ◽  
Discrete Phase

scholarly journals DPM model segregation validation and scaling effect in a rotary drum

2021 ◽  
Author(s):  
Amit V. Patil ◽  
Jesse Hofsteenge ◽  
Jakub M. Bujalski ◽  
Stein T. Johansen
Keyword(s):  
Experimental Data ◽  
Particle Size ◽  
Scaling Limit ◽  
Phase Method ◽  
Segregation Behavior ◽  
Discrete Phase Method ◽  
Discrete Phase ◽  
Parcel Size ◽  
Rotary Drum ◽  
Dynamic Segregation

AbstractDiscrete phase method (DPM) model was used to analyse rotary drum systems for segregation behavior. DPM simulations were performed for comparison with a dynamic segregation experimental measurement from the literature. This included dynamic segregation and time-averaged particle velocity field, which were validated with experimental data. In addition, a direct DPM and parcel scaled DPM simulation study was performed to analyse the effect of drum and particle parcel size scaling. The segregation dynamics was evaluated using the Lacey mixing index. This work shows segregation dynamics decreases with increasing drum size while keeping the same particle size. It further shows that for a given drum size the segregation dynamics deviate after a certain particle parcel scaling limit. The parcel scaling limit also increases with increasing drum size.

scholarly journals Simulation on Air-Fly Ash Particles Using Discrete Phase Method

2020 ◽  
Vol 920 ◽  
pp. 012021
Author(s):  
N.M. Zahari ◽  
Mastika Falsha Harun ◽  
Mahyun Zainoodin ◽  
Daud Mohamad ◽  
Agusril Syamsir ◽  
...  
Keyword(s):  
Fly Ash ◽  
Phase Method ◽  
Discrete Phase Method ◽  
Discrete Phase

scholarly journals A numerical simulation of wheel spray for simplified vehicle model based on discrete phase method

2015 ◽  
Vol 7 (7) ◽  
pp. 168781401559719 ◽  
Author(s):  
Xingjun Hu ◽  
Lei Liao ◽  
Yulong Lei ◽  
Hanbo Yang ◽  
Qingyin Fan ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Phase Method ◽  
Vehicle Model ◽  
Model Based ◽  
Discrete Phase Method ◽  
Discrete Phase

scholarly journals Numerical prediction of short-cut flows in gas-solid reverse flow cyclone separators

2017 ◽  
Vol 23 (4) ◽  
pp. 483-493 ◽  
Author(s):  
Ali Sakin ◽  
Irfan Karagoz
Keyword(s):  
Collection Efficiency ◽  
Reverse Flow ◽  
Reynolds Stress Model ◽  
Solid Particles ◽  
Phase Method ◽  
Geometrical Parameters ◽  
Pressure Drops ◽  
Discrete Phase Method ◽  
Discrete Phase ◽  
Vortex Finder

The effect of operational and geometrical parameters on the short-cut flow in cyclone separators has been investigated computationally using the Reynolds stress model (RSM). The motion of solid particles in the flow field was simulated using the Eulerian-Lagrangian approach with one way discrete phase method (DPM). Eleven cyclones with different cone tip diameters, vortex finder lengths and diameters were studied and the simulation results were analyzed in terms of velocity fields, pressure drops, cut-off diameters and short-cut flows. The numerical simulation was verified with the published experimental results. The results obtained demonstrate that all three parameters, particularly, vortex finder diameter, have significant effects on the cut-off diameter (collection efficiency), the short-cut flow and the pressure drop.

scholarly journals A Three-Dimensional Simulation of Particle Distribution in a Separator and Structure Optimization with the Statistical Approach of Taguchi Method

2018 ◽  
Vol 2018 ◽  
pp. 1-10
Author(s):  
Jinjin Liu ◽  
Kai Liu ◽  
Tong Zhao ◽  
Zhuofei Xu
Keyword(s):  
Taguchi Method ◽  
Three Dimensional ◽  
Optimal Solution ◽  
Structure Design ◽  
Dust Particles ◽  
Surface Element ◽  
Phase Method ◽  
Discrete Phase ◽  
Distribution Uniformity ◽  
Dimensional Simulation

A three-dimensional numerical simulation combining discrete phase method (DPM) and porous media based on the theory of Euler-Lagrange has been employed to investigate particles distribution in a separator. The DPM model is applied to monitor the movement of individual particles and calculate the contact force between them in the separator. The simulation results display the migration feature of dust particles over time and the distribution of particles on the surface element in porous region and reveal that the flow field influences the distribution uniformity of the particles in porous area directly. Based on the analysis, the structure of separator is optimized by the Taguchi method. An orthogonal relation motion has been established. The optimal solution is achieved by the calculation of the weight relationship. The calculated optimal structure is evaluated by the signal to noise (SNR). The result reveals that the values of SNR in case are eligible. As a result, the research of the separator points out a useful and improvable method for the parameter optimization of structure design.

The Thermal Properties of Modified Nano-Silica with Diluent/Epoxy Composites

2013 ◽  
Vol 677 ◽  
pp. 49-54 ◽  
Author(s):  
Huey Ling Chang ◽  
Chih Ming Chen
Keyword(s):  
Thermal Properties ◽  
Composite Materials ◽  
Pyrolysis Temperature ◽  
Gravimetric Analysis ◽  
Processing Conditions ◽  
Post Processing ◽  
Nano Silica ◽  
Nano Composite ◽  
Silica Filler ◽  
Negative Effect

In this paper, we present the function of the processing conditions (the amount of filler or diluent in epoxy resin, whether post-curing or not) in thermal properties of the modified silica/epoxy nano-composite materials based on thermal gravimetric analysis (TGA).The results is showed that after post-processing for the nanocomposite materials have a better thermal properties, and adding 3.2wt.% epoxy diluent can be taken a convenience operation, but has a negative effect on thermal properties. Nano-composite materials of diluent 3.2 wt.% plus nano-silica powder 2 wt.% will reach pyrolysis temperature 278.66°C. This reinforcement reaches the highest level observed of the decomposition temperatures of 2wt.% silica filler with no diluent cases nano-composite materials, after post-processing the decomposition temperatures could be enhanced to pyrolysis temperature 308.69 °C.

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