Numerical simulation

This paper presents a design study of a wavelengthrouted optical router based on flat waveguide components on the Silicon-on-Insulator (SOI) platform compatible with CMOS fabrication processes. The design incorporates Arrayed Waveguide Gratings (AWG), Bragg scattering gratings, and is assisted by resonant ring couplers.

8p viengfa 28-10-2024 1 1   Download

In this paper, the type of obstacle micro mixer model was designed and investigated by numerical simulation to improve the mixing efficiency. Passive mixers with tail-added obstacles structures were studied and compared with other conventional T microstructures, and then their mixing performance was numerically evaluated.

14p viling 11-10-2024 1 0   Download

Turbines are the most common devices used in the field of wind energy and tidal energy. They are also the main research objectives of scientists worldwide. Different research methods are applied to study these devices, including the numerical simulation method. This is an advanced approach that helps to save costs of calculation, but it still keeps the accuracy.

9p viling 11-10-2024 2 1   Download

Calculating intra-aneurysm flow uses optical flow with computational fluid dynamics simulation on the numerical analysis. This is a new method to better understand the intravascular flow and aneurysm flow as well as factors related to the inflow vortex and the inflow jet which increase the rupture risk in patients with an aneurysm.

9p viling 11-10-2024 1 0   Download

This paper presents experimental and numerical investigations to assess the relative fire structural resistance of thermo-mechanically compressed (or densified) spruce wood. The simulated thermal profiles, the mass loss as well as the charring depths were compared to the experimented results showing a fairly good agreement.

5p vibecca 01-10-2024 0 0   Download

This study presents numerical results regarding subsonic flow characteristics over axisymmetric boattail models equipped with longitudinal grooves, with the number of grooves ranging from 2 to 12.

12p vibecca 01-10-2024 1 0   Download

In this study, a numerical model was developed to simulate the mechanical behavior of an orthotropic steel bridge deck (OSBD) strengthened with UHPC under localized loads based on the five-point bending beam test configuration.

10p vibecca 01-10-2024 2 0   Download

The paper's contributions can extend to optimizing concrete mixtures, formulating repair strategies, and improving structural assessments. Further research is suggested to improve the accuracy of simulations and investigate material properties under various conditions.

14p vibecca 01-10-2024 0 0   Download

Wood, an environmentally friendly construction material, is characterized by a critical attribute that significantly influences its mechanical properties and durability: its moisture absorption behavior. This study expands upon an existing one-dimensional model to develop an innovative two-dimensional numerical framework for simulating moisture propagation within wood.

15p vibecca 01-10-2024 2 0   Download

This work is devoted to conducting a new study for global dynamics and numerical simulation of a discrete-time computer virus propagation model, which was constructed in our recent work. By utilizing well-known results on asymptotic stability of discrete-time dynamical systems, we establish the global asymptotic stability of a unique viral equilibrium point, whereas only its local asymptotic stability was previously analyzed.

8p viyoko 01-10-2024 6 1   Download

One of the factors that greatly affects the flight safety of airships is weather conditions and in particular, discrete gust with a speed equivalent to the speed of the airship. This article presented a method of numerical simulation of discrete gust according to flight safety standards.

11p viyoko 01-10-2024 4 1   Download

The paper analyzes and determines the optimal parameters of tuned mass damper to reduce torsional vibration for the machine shaft. The research steps are as follows. First, the optimal parameters of tuned mass damper for the shafts are given by using the maximization of equivalent viscous resistance method. Second, a numerical simulation is performed for configuration of machine shaft to validate the effectiveness of the obtained analytical results.

9p vifilm 24-09-2024 1 1   Download

In this study, the response of salinity intrusion to the river mouth morphological changes induced by the 2011 Tsunami is investigated. The topographical changes caused by the tsunami are mainly divided into two stages.

16p vifilm 24-09-2024 1 1   Download

This paper presents a numerical analysis of the seismic behavior of square concrete filled steel tubular (CFST) columns. Finite element analysis (FEA) models in ABAQUS software were used to simulate a series of columns subjected to axial compression and cyclic lateral loading.

14p vifilm 24-09-2024 2 1   Download

The hydraulic rock splitter with a wedge-type splitting head has various advantages, such as simple operation, high work efficiency, safety, shortened work time, and minimal environmental impact. This paper introduces the general structure of the rock splitter machine and the hydraulic cylinder-driven splitting head, along with the method for selecting suitable parameters.

13p vifaye 20-09-2024 2 1   Download

The study aims to provide an in-depth awareness of the loading capacity, deflection characteristics, and failure mechanisms exhibited by these girders by applying finite element analysis (FEA) techniques.

15p vifaye 20-09-2024 2 1   Download

In this paper, we numerically study the mobility of an unsaturated gravitational-granular flow, occurring on a slope-break system that contains two regions: Inclined-upstream and horizontal-downstream areas, by using three-dimensional discrete element simulations.

10p vifaye 20-09-2024 3 1   Download

We numerically study the effects of the size polydispersity and the friction coefficient on the compressive strength of wet granules under a diametrical compression test by using discrete element simulations. The numerical method is coupled with the capillary cohesion law which is enhanced by the cohesive forces between grains in the pendular regime.

9p vifaye 20-09-2024 1 1   Download

This paper uses ABAQUS-based numerical simulation to analyze concentrated stress at saddle and crown points on the chord of non-uniform corroded tubular T-joints under axial loading in some different scenarios.

12p vifaye 20-09-2024 10 1   Download

In this study, we propose to build an equivalent 2D model to replace the 3D model of corrugated composite sheets, by the method of homogenization, to study the nonlinear mechanical behavior of corrugated core composite sheets. This model helps to significantly reduce the calculation time as well as the model building time. The model homogeneity is confirmed by comparing the numerical simulation results of the 2D model and the 3D model.

8p dathienlang1012 03-05-2024 2 0   Download