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Numerical Simulation of Shock Diffraction on Cartesian Grid Hong Chen1, a, Weibing Zhu1,b , Runpeng Sun1,c and Bin Zhang2,d 1 College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, China 2 College of Astronautics, Beijing University of Aeronautics and astronautics, Beijing 100083, China a ch02221@126com, b zhuweibing@hrbeu.edu.cn, c chenxing-srp@163.com d zhangbin.1983@yahoo.com.cn, Keywords: shock diffraction, Level set, cartesian grid, Ghost cell Method.
-S., Yovanovich M.M., Numerical simulation of shock diffraction on unstructed meshes [J].
In: CFD 97 Proceedings; 1997. p. 5.13–5.18

Simulation Tools for Glass Forming Processes by Drawing Christoph Berndhäuser1, a, Ulrich Lange1,b 1 Schott AG, Hattenbergstrasse 10, 55122 Mainz, Germany a christoph.berndhaeuser@schott.com, bulrich.lange@schott.com Keywords: glass forming, modeling, updraw, downdraw, float, tube drawing.
Small aspect ratios (thickness or diameter vs. length) Fig.1 are very typical for all drawing processes and can be exploited to derive simplified 2.5D models - velocity and temperature approximately uniform in each cross section - with good agreement to full numerical simulations.
Except for fiber forming model all other submodels can be done by standard CFD codes whereas the fiber model requires free surface capabilities as it is available for example in Polyflow.

The simulation results are good agreed with the practical produce data, verifying the accuracy of the numerical simulation analysis, which provide theoretical basis and effective guidance for improving process and increasing yield in practical production.
The numerical simulation results of flow field in mold.
The numerical simulation results of temperature field in mold.
Conclusion Internal flow field and temperature field in slab casting mold was the numerical modeled and coupling analysis, using ANSYS ICEM CFD and CFX.
The numerical simulation results conform to actual production data well, and verify the accuracy of the numerical simulation, which provide the theoretical bases and effective guidances for improving process and increasing yield in practical production.

The numerical simulations are carried out by using commercial finite volume solver CFX 13.0.
The solver finished a single simulation in approximately 2,000 iterations.
The present numerical simulations have been performed by an Intel Xeon CPU E5420 (8CPUs).
Acknowledgments This work was supported by the National Research Foundation of Korea (NRF), grant No. 20090083510, funded by the Korean government (MEST) through Multi-phenomena CFD Engineering Research Center.
Chai: Three-dimensional Numverical Simulation of Fluid Flow with Phase Change Heat Transfer in an Asymmetrically Heated Porous Channel, Int.

Their simulation results presents only 1.2% and 1.5% of the contaminate particles remain in the men’s and women’s rooms, respectively.
Our study hope to have other solution to increase ventilation efficiency without different ACH rates; consequently, we change area of the wall-exhaust diffuser to research by using a computational fluid dynamics (CFD) software named FDS (Fire Dynamics Simulator) [9] to analysis.
Numerical simulation using Fire Dynamics Simulator (FDS) This study use a numerical simulation software named Fire Dynamics Simulator (FDS) [9] to analysis.
This simulation uses that produced smoke replace odor flow and we could observe flow pattern and smoke concentrations.
Air change rate and odor removal analysis A curve fitting performed using 3 order polynomial with numerically simulation‘s data.

Simulation Model The autoclave, component, air and mould are meshed by ICEM CFD.
Fig. 3 Simulation model 3.
Constitutive modeling and springback simulation for 2524 aluminum alloy in creep age forming.
Simulation of mold temperature distribution in a running process autoclave.
Numerical simulation and experiment on creep age forming for 7B04 aluminium alloy stiffened component.

ONAMA provides tools that have a close affinity with practical simulation, thus making the learning process for students more applied.
Tools integrated in ONAMA provide turnkey solutions with the practical simulations.
· Mechanical Domain OpenFOAM: CFD software package.
Meep: A free finite-difference time-domain (FDTD) simulation software package
· CUDA Enabled Applications NAMD: Parallel molecular dynamics code designed for high-performance simulation of large bimolecular systems.

Modified parameters then are verified by processing simulation and experiments.
Firstly, the simulation involves multi-fields simulation.
All of these analysis and simulation as well as experiments are time consuming.
The simulation involves multi-fields simulation, for example, (1) continuum fluid flow simulation using CFD model to compute the velocity and pressure distribution of the working gas within a deposition chamber; (2) steady state plasma simulation to determine the flux and energy of the ions that strike both the target and substrate; (3) transport simulation using Direct Simulation Monte Carlo (DSMC) to track the propagation (and energy loss) of target atoms through the working gas from the target to a substrate; (4) hyper-thermal kinetic Monte Carlo method to relate the film surface morphology and atomic scale structure to the flux parameters and therefore the conditions of the vapour deposition process [9]; (5) the electric field simulation for the magnitude of electric field enhancement is associated with non-flat surface morphologies; (6) the magnetic field simulation for predicting the target erosion and the thickness profile of the films deposited by magnetron sputtering; (7) thermo
field simulation and components performance simulation.

The numerical simulation of gas-liquid-solid three-phase flow in the disc pump LI Bin1, a, QI Hao2,b 1Mechatronic Engineering College, Southwest Petroleum University, Chengdu, China 2Oil Production Services Co, CNOOC Energy Technology & Services Limited, Zhanjiang, China aswpulb@126.com, bqihaoyuz@163.com Key words: disc pump; gas-liquid-solid three-phase flow; structure improvement; numerical simulation Abstract: In this paper, the flow law of gas-liquid-solid three-phase flow was studied in the disc pump internal, established a set of numerical simulation method that calculated multiphase flows of disc pump internal.
Finally the structure of the disk pump impeller was improved, and designed a new disc pump with multiple-blade structure, through numerical simulation calculation for the gas-liquid-solid three-phase flow of the disc pump internal, mastered change rule of fluid pressure and speed in disk pump internal, obtained relation curves between the different solid phase particle concentration with different gas phase concentration and the head with the efficiency of the pump.
In order to improve the performance of disk pumps and know well about the motion law of internal fluid flow, this paper multiphase fluid dynamics, particle dynamics and numerical simulation of the disk at gassed pumping to simulate the flow of, access to variation of the pump flow and the concentration of solid particles of different diameter and density and the pump head and efficiency curves, a set of disk Pump calculated numerical simulation of multiphase flow, while the pump in use for the disk head and the problem of low efficiency of the pump impeller disc structure was improved, designed a multi-leaf structure of the new disc pump, through the application in the field after the good results achieved. 1 Gas-liquid-solid three-phase flow equations Continuity equation [7-8] （1） Which: （2） （3） Where: —Multiphase fluid mixture density，; —Divergence，; —Mass average velocity，; —K-phase volume fraction，%; —K-phase density of the fluid phase，。
Numerical simulation of the two-phase flow in centrifugal pump impellers.
[8] WANG Guang-ye and LIU Yuan-yi, Analysis of CFD on Inner Flow in Low-specific-speed Centrifugal Pump Impeller, China Mechanical Engineering & Automation , 2006,(5) : 31-33.

We developed computational procedures UDFs (User Defined Function) working interactively with the Fluent CFD code [1].
Geometry and mesh In the present work, the gambit/fluent simulation package was used to develop our numerical simulation.
Conclusion This numerical simulation relates the heating effects during laser interaction with metal surfaces using a laser beam with Gaussian distribution of the intensity.
In the simulation we studied the influence of the various parameters related to the laser beam.
Garruchet, “ Modélisation de phénomènes locaux : vers leur prise en compte dans la simulation de la cinétique d’oxydation d’un métal.”, Thèse de Doctorat, Ecole Doctorale Carnot, Bourgogne, France (2006)