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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.

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.

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.

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.

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.

The effects of three different treatment methods including introducing a gap, area contacting and cylindrically bridging on flow and heat transfer performances of structured packed beds of particles were investigated with CFD methods.
In Wang [17]’s study, mixing processes of hot and cold fluids in a tee with and without sintered copper spheres were simulated by Fluent using the large-eddy simulation (LES) turbulent flow model and the sub-grid scale (SGS) Smagorinsky-Lilly (SL) model with buoyancy.
Saturated water convection heat transfer in ordered three-dimensional porous media investigated numerically using a CFD software by Wang [18].
The operating conditions are numerically simulation with no slip adiabatic boundary conditions on the pipe wall by using Fluent software subject to uniform heat flux.
Jiang, Numerical Simulation research on heat transfer and fluid flow for pebble beds, J.

In this paper, the boiling phenomena of steam boiler under atmospheric pressure are simulated by using the UDF program of CFD software.
In this paper, Computational Fluid Dynamics (CFD) software is applied to simulate boiling flow and heat transfer phenomena in the water wall tubes of steam boiler.
�umerical simulation of boiling two-phase flow Mathematical model and numerical simulation.
In this paper, N-S equation is used in the simulation because of Knudsen nk <<0.001.
Using CFD software, the numerical simulation results can be got quickly and safely.

By the steady state numerical simulation method, the aerodynamic characteristics of external flow field of Ahmed body in crosswind was investigated.
Method of XFlow The MSC software XFlow is a kind of new CFD software based on the Lattice Boltzmann equation.
Numerical Simulation The model selection.
Because difficulties in the aerodynamic characteristics simulation of the real vehicle exist, e.g. complex model, numerous grids, and long time of computation, etc.
The steady state numerical simulation was chosen, and the speed was defined constant.

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 final part of this research is the measurement of its thermal resistance under the normal atmospheric temperature and comparison with the data from the numerical simulation is made.
Using the CFD software, the whole heat dissipation efficiency of the water-cooling micro-channel heat sink can be predicted, and the thermal and mechanical behavior of the heat sink can be easily understood.
Fig 12 shows the relation between thermal resistance and flow rate under different heat generation, which are the numerical results of the heat sink using the CFD software, and displayed from the figure which are the same value of the thermal resistance under different heat generation.
The effect of the thermal resistance between the heat source and the heat sink is neglected in numerical simulation in this study, and it is the main reason why it causes the difference of experiment data from that of numerical simulation.