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For the analysis of various extruder models are used not only testing, but also diverse simulation techniques.
I�TRODUCTIO� Not only testing but also diverse simulation techniques are recently used to analyze various extrusion models.
(a) Standard Plate modelling data value (b) �umber 1 Plate (c) �umber 2 Plate (d) �umber 3 Plate (e) �umber 4 Plate (f) �umber 5 Plate (g) �umber 6 Plate Fig. 6 Rate of Plates Fig. 7 shows plate simulation values in graphs.
[3] Dong-Seong Kwag, Woo-Seung Kim and Min-Young Lyu, 2001, "Three-Dimensional Heat and Fluid Flow Simulations for Non-Newtonian Fluid in a Single Screw Extruder", KSME, pp. 337~342
"Cfdesign Technical reference : Upfront CFD"

Using the finite element method, according to the actual size, building an entity model, the finite element simulation was conducted by a series of procedures, such as meshing, loads applying and solving.
Sensitive cavity simplified diagram Solve with finite element method The FLOTRAN CFD analysis function of the ANSYS software usually includes the following three steps: Modeling, Applied load and Solve.
Building the two-dimensional entity model First, choose FLOTRAN CFD analysis function.

aChenyong880@yahoo.com.cn, bliangxt666@126.com.cn, cZeng-jhua@263.net.cn, d13882393081@163.com.cn,eliangxt666@163.com.cn Keywords: converter steelmaking, oxygen lance, oxygen jet, numerical simulation, metallurgical effect Abstract: The lance system is one of the important link of converter.
The numerical simulation for a three-dimensional oxygen lance nozzle was carried out according to the fundamental parameters of PZH steel, the characteristics of the oxygen jet were analyzed and discussed.
Numerical simulation of oxygen lance To accurately detect each parameter and actual performance, the design lance was simulated by CFD in this paper.
Conclusions (1) The numerical simulation for a three-dimensional oxygen lance nozzle was carried out according to the fundamental parameters of PZH steel.
[2] WANG Wen-jing, ZHAO Hong-xin,PAN Yi-fang,etc,in:Numerical Simulation on Flow Behavior of Nozzle Jets in Oxygen Lance.

The influence of the flight aerodynamic for interactions of wings and body of the honeybee ZHAO Hong-yan1,a, ZHANG Peng-fei1,b, MA Yun1,c 1Beijing Institute of Technology, Beijing 100081,China a272159211@qq.com, bzhangpf0719@163.com, cmayun_1633@163.com Keywords:wing, aerodynamics, vortices, numerical simulation.
The aerodynamic and vortices were simulated by the CFD software of Fluent.The leading-edge vortex generatedin the translation phase, and delayed stall mechanism had an important effect on the high lift.

Since fully laminar simulation will get too large separation zone and lower pressure peak after the reattachment point, turbulence effect becomes important.
(a) 2nd-order MUSCL scheme (b) Hybrid scheme Fig.5 Density contours in the symmetry plane (a) Different slope limiters (b) Different schemes Fig.6 Surface pressure distributions (a) Viscosity coefficient distribution (b) Surface pressure Fig.7 Results for 25-50°double-cone calculated by turbulence and transition models Conclusions In this present work, we carried out a series of numerical simulations of the hypersonic 25°-50° double-cone flow.
References [1] P.Gnoffo, CFD Validation Studies for Hypersonic Flow Prediction.
Nompelis, CFD Validation for Hypersonic Flight: Hypersonic Double-Cone Flow Simulations.

The results provided by numerical simulation of wind action on the building were used to make a comparative study between different patterns of wind fences.
In order to identify an optimal solution for reducing the wind pressures on the external walls of the building, a series of numerical simulation were performed in Ansys CFX.
Comparing the results obtained from the numerical simulation, the porous wind fences represent the best solution for a small distance (1 meter) between the wind fence and the building.
Furthemore, the numerical simulation shows that for the same porosity (10%) the pattern of the pressure distribuition on the building is strongly related to the patern of the wind fence.
[8] Franke, J., Recommendations of the Cost Action C14 on the Use of CFD in Predicting Pedestrian Wind Environment, The Fourth International Symposium on Computational Wind Engineering (CWE2006), Yokohama, Japan, 2006.

The reviewed works are limited to ductile material erosion and four categories: erosion mechanism, parametric studies, material removal modeling and simulation modeling.
The reviewed works are limited to ductile material erosion and four categories: erosion mechanism, parametric studies, material removal modeling and simulation modeling.
A CFD simulation of ultrahigh velocity waterjets and abrasive waterjets has been presented.
Aristomenis Antoniadis，A finite element-based model for pure waterjet process simulation，Int J Adv Manuf Technol (2007) 31: 933–940 [25] H.
Liu, A study of abrasive waterjet characteristics by CFD simulation, Journal of Materials Processing Technology 153–154 (2004) 488–493 [26] T.

Abstract: A 3-Dimensional fluid flow over the sudden expansion region of a horizontal duct for various Reynolds numbers have been studied by using the CFD Software package ANSYS Workbench Fluent v 13.0.
The simulation is carried out in sudden expansion for Reynolds number ranging from 200 to 4000.
The simulation is governed by continuity, momentum and energy equations.
Simulations of the flow and heat transfer are performed for the governing parameters, which are assigned with the following values: Prandtl number [6.99]; Reynolds number [200, 4000]; Heat flux [35 W/m2].
[3] Hiroyuki YOSHIKAWA, Kazuyoshi ICHINOMIYA, Mizue MUNEKATA and Hideki OHBA, Numerical Simulation of Deflecting Flow in a Symmetric Enlarged Channel, Journal of Thermal Science, Vol.16, No.4, pp 353-359, 2007

From frosen image-based bioflow simulations to integrative modeling of living interfaces Muhetaer Kelimu†,‡, Marc Thiriet† † INRIA-UPMC-CNRS team REO, LJLL, UMR CNRS 7598, Universit´e Pierre et Marie Curie (Paris VI University), F-75252 Paris cedex 05 and INRIA, BP 105, F-78153 Le Chesnay Cedex, France ‡ Mechanical Engineering, Xinjiang University, 21 Youhao Road, Urumqi, 830008 Xinjiang, China kmuhetar@xju.edu.cn, Marc.Thiriet@inria.fr Keywords: image-based simulation, mechanotransduction, multiscale modeling, Navier-Stokes equation.
Many research group have developed softwares to carry out simulations of flows in physiological conduits.
Simulations needs verification and validation.
Any integration platform is important for simulation of living systems, coupling the set of equations which describe both associated physical and chemical processes to the Navier-Stokes equations.
References [1] de Rochefort L, Vial L, Fodil R, Maˆıtre X, Louis B, Isabey D, Caillibotte G, Thiriet M, Bittoun J, Durand E, Sbirlea-Apiou G (2007) In vitro validation of CFD simulation in human proximal airways reconstructed from medical images with hyperpolarized helium-3 MRI phase contrast velocimetry, J.

Through simulation or theoretical studying, the jet flow field can be predicted.
Baik et al had analyzed the gas dynamic behaviors in a high velocity oxygen-fuel thermal spray gun through a nozzle using CFD analysis method [4].
In this simulation, the effects of contraction angle of nozzles and of the distance between nozzles on the water spray flow field are analyzed.
After simulation computing, the results of curve graph of water flow pressure field on the line are gotten as shown in Figure 8.
Fluent software is used to simulation the water flow velocity field and pressure field.