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In this paper, a numerical simulation was performed on a scale turbofan engine nozzle to asses the influence of two nozzle configurations over the flow performance while the nozzle is situated at a certain distance from the ground.
The turbulence model chosen for this numerical simulation was SST k-ω to capture boundary layer detachment and jet attachment to the ground.
Mathematical Model In the present paper the analysis was performed with a commercial CFD code, Ansys CFX, using a steady state approach.
During the simulation, in all three cases, two recirculation zones having different thicknesses developed, first around the secondary jet exhaust, and the second between the secondary jet exhaust and ground.
[2] Lupoglazoff N., Biancherin A., Vuillot F., Rahier G., "Comprehensive 3D unsteady simulations of subsonic and supersonic hot jet flow-fields.

Computational Fluid Dynamics (CFD) simulations suggest that multiphase flow erosion may concentrate particle impacts on downstream part of the elbow.
First, the flow of the carrier fluid through the elbow is modeled with the help of CFD.
Eq. 2 is commonly used in both CFD simulations and empirical studies.
(4) A lot of work has been done on the theoretical and numerical simulation of elbow erosion.
Fluid-structure interaction mechanism and numerical simulation of elbow erosion failure.

CFD Simulations.
The ANSYS ICEM/CFD software is used to construct two-dimensional geometry model and the body fitted computational mesh.
Therefore, the aerodynamic performances of two different thickness airfoils as NACA6412 and NACA6422 are also calculated with CFD simulations.
The two-dimensional CFD simulations and Taguchi analysis on the aerodynamic performance of cambered airfoils suggested that the NACA64XX airfoils exhibited the maximum lift-to drag force coefficient for low Reynolds number flow conditions. 2.
Fig. 1 CFD Simulations blade-section research.

Savvas Xanthos and Minwei Gong developed a Computational Fluid Dynamics (CFD) model[12].
To solve this problem, FLUENT, a CFD code, was employed to investigate hydraulic characteristics and an object function of was presented to evaluate hydraulic efficiency of settling tank in this paper.
Mathematic Model FLUENT is used to perform the numerical simulation by solving conservation equations for mass and momentum.
W: Simulation of hydrodynamic and transport characteristics of rectangular settling tank, in Transport of Suspended Solids in Open Channels, ed.
[12] Savvas Xanthos, Minwei Gong: Performance Assessment of Secondary Settling Tanks Using CFD Modeling.

In the process ANSYS2FLOTRAN CFD program is applied.
All sides of the chamber keep radiating heat. 3.Finite element method ANSYS-FLOTRAN CFD is an advanced tool used to analyze the two and three dimensional flowing fields[2].
It usually includes three steps as follows: model building, loads applying and equation solving. 3.1model building (1) Analysis type choice:Choose the analysis function of ANSYS-FLOTRAN CFD
Fig.7 shows the change curve of actually metrical bridge voltage ∆U with acceleration. 0.0 0.1 0.2 0.3 0.4 0.5 -0.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 a/(g) B v0/(v) Fig.7 Relation between outputt voltage of sensor and acceleration 6.Conclusions Using the finite element method and ANSYS-FLOTRAN CFD program,the temperature field is calculated in different acceleration.The calculation results and analysis results show: (1) The temperature difference between two thermistors changes with the acceleration change
[2] Guoqiang Wang, Numerical simulation and practice on ANSYS [M], Xi'an: Northwest Industry University Press, 1999. 221

EffectofT-shaped Micro-channel StructureDimension onFormation ofMicro-liquid-columns Formed by Vertical-shear-flow WANG Zhixin1,a, Li zhe2,b, Cai hengzhi2,b, ZHANG Yajun1,c, ZHUANG Jian*3,d 1College of Mechanical and Electrical Engineering, Beijing University of Chemical and Technology,Beijing, China,100029; 2L.K.Group Ningbo L.K. technology Co.Ltd; 18 Yanshanhebeilu, Ningbo, Zhejiang, China, 315806; 3Engineering Research Center of Polymer Processing Equipment of Beijing University of Chemical and Technology, Ministry of Education, Beijing, China,100029 axiaoxin871205@163.com, blknblk@lknblk.com,ca1169@163.com, dvipzhuangjian@163.com Key words: Micro-reactors; Micro-channels; CFD; Vertical-shear-flow; Micro-liquid-columns Abstract：Effects of T-shaped micro-channel structuresizes on the formation of micro-liquid column formedby vertical-shear-flow were studied.
The method of CFD based on VOF (Volume of Fluid) model was used in the computation.
Using the method of CFD, Dong Lichun[3]simulated the regular of micro-droplets formation in a T-shaped micro-channel, studied the effect of the Capillary number on the regular.
continuous-phase inlet mian channel dispersed-phase inlet (a)3D model (b)2D model Fig.1 Geometric model of T-shaped micro-channel In order to simulate the formation of micro-liquid-columns in the T-shaped micro-channel, the CFD method based on VOF model in the software of Fluentis used.
CFD simulation of droplet formation in a microfluidic T-junction[J].

Simulation of Hydrodynamics and Reaction Behavior in an Industrial RFCC Riser Aisha Ahmed1, a, A.
Therefore, many research studies have been employing the CFD modeling for the FCC riser and downer reactors [2-6].
In the last decade, CFD technique has received much more attention when modeling a gas-solid multiphase flow reactor.
In this work an industrial RFCC riser with high Conradson carbon residue feedstock is modeled and simulated using CFD tools.
Therefore, the CFD approach was applied to simulate the flow behavior and catalytic cracking reactions in RFCC riser reactor.

By using the numerical simulation method, we can get the law of the flow field.
In this paper, by using the CFD method in stirred tanks, we applied the theory to the studying of the flow field of soymilk makers.
CFD Modeling 2.1 Model of Rotary Region.
Multiple reference frame model is the model that is commonly used in a steady state simulation.
Then we arranged the numerical simulation of the spoiler ribs, the results were shown in table 2.

Several turbines with different geometries of the crowns were compared, whose power coefficients were numerically simulated by the CFD method.
Before the beginning of turbine designing, the CFD techniques concerned in the turbine flow simulation were introduced as following.
By the results of turbines flow simulation, power coefficients of the two turbines are listed in table 2.
Aerofoil Characteristics from 3D CFD Rotor Computations [J].
Computer Simulation, 2010, 27(3):276-280 (in chinese).

Modelling Approach The modelling CFD includes three stage which is pre-processing, solver and post processing using ANSYS-CFX 14.
As the real geometry for CO2 leakage model has a very high dimension, it will require a high number of meshes and long simulation time.
Results and Discussion The base case model has been simulated for simulation time 50 days, 100 days, 300 days, 500 days, and 1000 days using transient analysis.
To predict the potential of CO2 leakage, the simulation results has been plotted into logarithmic graph with a yearly timescale.
The CFD result also being compared with experiment data from Barlet Gouedard supercritical CO2 and saturated data [3] and Kutchko saturated brine [2].