The effect of applied magnetic field on flow structures in liquid phase electroepitaxy—a three-dimensional simulation model

2002 ◽  
Vol 244 (1) ◽  
pp. 12-26 ◽  
Author(s):  
Y.C Liu ◽  
Y Okano ◽  
S Dost
Keyword(s):  
Magnetic Field ◽  
Liquid Phase ◽  
Simulation Model ◽  
Applied Magnetic Field ◽  
Three Dimensional ◽  
Flow Structures ◽  
Dimensional Simulation

Research of Mini Car Handling Stability Based on ADAMS

2011 ◽  
Vol 486 ◽  
pp. 246-249 ◽  
Author(s):  
Zhen Jiang Ma ◽  
Lin Chen ◽  
Ning Xu
Keyword(s):  
Simulation Model ◽  
Software Package ◽  
Three Dimensional ◽  
Vehicle Suspension ◽  
Dynamic Simulations ◽  
Advanced Method ◽  
Test Methodology ◽  
Adams Software ◽  
Vehicle Systems ◽  
Dimensional Simulation

This paper presents a highly effective and efficient advanced method for design and development of handling stability systems of mini-cars. In order to design and develop the steering-stability system of a car, a three-dimensional simulation model is built, including the establishment of vehicle suspension, steering, tires and other vehicle systems, using ADAMS software package. This model has been tested through the kinematic and dynamic simulations according to the corresponding test methodology.

Simulation Study the Movement of Materials in Loader Shovel Working Process Based on EDEM

2013 ◽  
Vol 655-657 ◽  
pp. 320-325 ◽  
Author(s):  
Peng Peng Huang ◽  
Xi Zhou Xiao
Keyword(s):  
Particle Size ◽  
Simulation Model ◽  
Slip Plane ◽  
Three Dimensional ◽  
Discrete Element ◽  
Working Process ◽  
Loading Process ◽  
Motion Characteristic ◽  
Simulation Results ◽  
Dimensional Simulation

By application of the theory and methods of discrete element, a loader loading process three-dimensional simulation model was established, the simulation model established in EDEM software realized the visualization of loader inserting process. By three different particle size materials inserting process simulation, material motion characteristic could be obtained and the laws of motion of different size material were compared. Simulation results show that regardless of the particle size, compaction zone (dense core) were generated. For small particles, during insertion of the material there was a distinct shear slip plane and for coarse particles, slip plane was not obvious. The simulation results were consistent with the results of previous analysis and verified that the discrete element method and the model in the loading process were effective in the study.

scholarly journals Use of a Two-Dimensional Simulation Model in the Thermal Analysis of a Multi-Board Electronic Module

1994 ◽  
Vol 116 (2) ◽  
pp. 126-133 ◽  
Author(s):  
C. Beckermann ◽  
T. F. Smith ◽  
B. Pospichal
Keyword(s):  
Heat Transfer ◽  
Simulation Model ◽  
Three Dimensional ◽  
Two Dimensional ◽  
Circuit Boards ◽  
Depth Direction ◽  
Wide Range ◽  
Local Board ◽  
Dimensional Simulation ◽  
Effective Component

A study is reported of heat transfer and air flow in an electronic module consisting of an array of narrowly spaced vertical circuit boards with highly-protruding components contained in a naturally vented chassis. A two-dimensional simulation model is developed that accounts for heat transfer by conduction, convection, and radiation, and sensitivity studies are performed. Experiments are conducted using a specially constructed test module. Comparisons with the experiments reveal the need to calibrate the model by selecting an effective component height that represents the drag properties of the actual three-dimensional component geometry. The need to account in the model for heat losses in the depth direction is also discussed. The importance of accurate thermophysical properties and of multi-dimensional radiation is shown. Good agreement with measured velocities and local board temperatures is obtained over a wide range of power levels, and it is concluded that the calibrated model is capable of representing the thermal behavior of the present module.

539 USE OF A THREE-DIMENSIONAL SIMULATION MODEL TO DETERMINE THE ETIOLOGY OF VOIDING DYSFUNCTION

2013 ◽  
Vol 189 (4S) ◽  
Author(s):  
Shigeiro Soh ◽  
Koujiro Nishio ◽  
Makoto Kawaguchi ◽  
Ryo Sato ◽  
Shigehiyuki Ohta ◽  
...  
Keyword(s):  
Simulation Model ◽  
Voiding Dysfunction ◽  
Three Dimensional ◽  
Dimensional Simulation

Development of a Three-Dimensional Simulation Model of Vehicle-Bridge Railing Crash: A Computer-Aided Approach to Bridge Railing Stiffness Design

1998 ◽  
Vol 1647 (1) ◽  
pp. 104-110
Author(s):  
Yuqing Wang ◽  
Yosuke Tamura ◽  
Hirotoshi Ishikawa ◽  
Kazuhiko Ando
Keyword(s):  
Simulation Model ◽  
Analytical Data ◽  
Three Dimensional ◽  
Vehicle Performance ◽  
Heavy Trucks ◽  
Stiffness Design ◽  
Dimensional Simulation ◽  
Multi Body ◽  
Crash Model ◽  
High Degree

To improve the conventional lengthy and inefficient design process for bridge railings, which features repetitions of costly full-scale experiments, and to support the bridge railing design with analytical data, this research developed a three-dimensional (3-D) simulation model that can reconstruct a vehicle-bridge railing impact analytically and visually using MADYMO (MAthematical DYnamic MOdel), developed by TNO. Both the vehicle and the bridge railing are modeled as rigid multi-body systems. A nonlinear tire model and a 3-D suspension are introduced to increase the reality of the vehicle motion during impact. The bridge railing is divided into poles and longitudinal railings. The bending characteristics of the poles and the longitudinal railings are described by the properties of corresponding universal joints attached to them. The simulation model is verified by experimental data of three different conditions using heavy trucks (8 tons and 20 tons). The validation reveals that the 3-D model can reconstruct vehicle-bridge railing crashes with a high degree of accuracy with respect to the vehicle performance and the deformation of the bridge railing, which are the most important concerns in the designs of bridge railings. The validated crash model is then employed to determine the necessary stiffness of the bridge railing under different conditions. Curves describing the relationship between the stiffness of the poles and the longitudinal railings are calculated for various impact severity values. These curves provide analytical grounds for the stiffness designs of the bridge railings.

Numerical study of convection in the horizontal Bridgman configuration under the action of a constant magnetic field. Part 2. Three-dimensional flow

1997 ◽  
Vol 333 ◽  
pp. 57-83 ◽  
Author(s):  
HAMDA BEN HADID ◽  
DANIEL HENRY
Keyword(s):  
Magnetic Field ◽  
Applied Magnetic Field ◽  
Constant Magnetic Field ◽  
Numerical Study ◽  
Three Dimensional ◽  
Navier Stokes ◽  
Structural Reorganization ◽  
Direct Numerical Solution ◽  
Flow Circulation ◽  
Buoyancy Driven Convection

The effects of a constant magnetic field on electrically conducting liquid-metal flows in a parallelepiped cavity are investigated using a spectral numerical method involving direct numerical solution of the Navier–Stokes and Ohm equations for three-dimensional flows. Three horizontal Bridgman configurations are studied: buoyancy-driven convection in a confined cavity and in a cavity where the top boundary is a stress-free surface and thirdly, thermocapillary-driven flow in a cavity where the upper boundary is subjected to effects of surface tension. The results of varying the Hartmann number (Ha) are described for a cavity with Ax = L/H = 4 and Ay = W/H = 1, where L is the length, W is the width and H is the height of the cavity. In general, an increase in the strength of the applied magnetic field leads to several fundamental changes in the properties of thermal convection. The convective circulation progressively loses its intensity and when Ha reaches a certain critical value, which is found to depend on the direction (longitudinal or vertical) of the applied magnetic field, decrease of the flow intensity takes on an asymptotic form with important changes in the structure of the flow circulation. The flow structure may be separated into three regions: the core flow, Hartmann layers which develop in the immediate vicinity of the rigid horizontal boundaries or at the endwalls, and parallel layers appearing in the vicinity of the sidewalls. The behaviour of the maxima of velocity and of the overall flow circulation is found to depend on both the boundary conditions used and the direction of the applied magnetic field. Furthermore, the interaction of the electric current density with the applied magnetic field which leads to the structural reorganization described above can also create more subtle flow modifications, such as flow inversions which are observed mainly in the central region of the cavity.

Upper Critical Field and Irreversibility Line in Bi2Sr2CuO6+δ/CaCuO2 Superconducting Superlattices Obtained by MBE

2000 ◽  
Vol 14 (25n27) ◽  
pp. 2767-2772
Author(s):  
Matteo Salvato ◽  
Carmine Attanasio ◽  
Gerardina Carbone ◽  
Rosalba Fittipaldi ◽  
Tiziana Di Luccio ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Experimental Data ◽  
Thin Films ◽  
Phase Diagrams ◽  
Applied Magnetic Field ◽  
Three Dimensional ◽  
Upper Critical Field ◽  
Resistivity Measurements ◽  
T Phase ◽  
The Magnetic Field

Resistivity measurements in external applied magnetic field up to 8.5T have been performed on Bi2Sr2CuO6+δ/CaCuO2 superconducting superlattices obtained by MBE. The magnetic field (H) vs. temperature (T) phase diagrams have been determined and the experimental data have been compared with that obtained in the case of Bi2Sr2CuO6+δ thin films deposited with the same technique. A reduction of the anisotropy has been obtained in the case of the superlattices with respect to the case of Bi2Sr2CuO6+δ thin films and a three dimensional behavior has been observed by paraconductivity measurements.

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