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The CFD methods have been developed since 1960s on the basis of computational mathematics and theoretical fluid dynamics.
Most of CFD computer packages are based on FVM.
Algorithm for the numerical simulation: · formulation of numerical problem (definition of basic data); · construction of geometry of gas-dynamic area of air flow, i.e., the domain in the program for three-dimensional modeling of Unigraphics NX; · construction of mesh model of the domain in the mesh generator Icem CFD; · construction of a computational model with boundary conditions in the Ansys CFX, based on mesh model; · verification of the results of numerical simulation with experimental data.
This domain was imported to the mesh generator Ansys Icem CFD.
Construction of computing simulation model was carried out by means of Ansys CFX package.

In recent years, the application of CFD numerical simulation for 3-D turbocharger design begins to be widely adopted with the development of computer technology and the enhancement of calculation method.
CFD simulation was coupled with parameters optimization of the design process and a satisfactory design result was achieved.
Numerical Simulation and Results Analysis of the Original Model Object of study.
A grid-centered finite-volume method was chosen in the simulations.
[2] Hans-Peter Dickmann,Thomas Secall Wimmel,Jaroslaw Szwedowicz,Janpeter Kühnel,Uwe Essig, “Unsteady Flow in a Turbocharger Centrifugal Compressor: 3D-CFD Simulation, Impeller Blade Vibration and Vaned Diffuser-Volute Interaction.,”ASME Paper No.

The Numerical Simulation of Combustion On Vinegar Residue in a biomass Boiler Aiping Shi1, a, Qian Ma1,b and Yinli Zhang2,c 1Department of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China 2Dacheng Engineering Co.Ltd of Taiyuan University of Technology, Taiyuan 030032, China ashiaiping1968@126.com, bmq9987@126.com, c408264017@qq.com Keywords: Vinegar Residue; Combustion; Numerical Simulation Abstract: Numerical simulation had been used to study the combustion characteristic of vinegar residue in a straw-fired boiler in this paper.
Achievement of the paper was based on a kind of CFD.
In this paper, numerical simulation on combustion of vinegar residue in the biomass boiler was researched, to provide some reference parameters for the effective use.
Straw combustion simulation and test research had been done before.
The CFD prediction was carried out using fluent 6.3.

Using ANSYS-FLOTRAN CFD software, the finite element simulation is conducted by a series of procedures, such as two-dimensional model building of fluidic gyroscope, meshing, loads applying and equation solving.
In this paper, we use the FLOTRAN CFD analysis of ANSYS software to comparative study in the different position of vice nozzle, so as to attempt to find a better distance between vice nozzle and main nozzle which can improve the sensitivity of fluidic gyroscope.
Fig. 3 The nozzle array structure Fig. 4 Two-dimensional simplified models of sensitive cavity Solve with Finite Element Method The FLOTRAN CFD analysis of ANSYS software is an advanced tools used to study two dimensional and three dimensional flow fields, the simulation typically comprises modeling, loading and solving [3-4].
Select FLOTRAN CFD analysis of ANSYS software.
Wang: Numerical simulation of practical engineering in ANSYS (Northwestern Polytechnical University Press, China 1999)

Internal flow field and noise of outlet blockage fault and trouble-free for control valve are studied by CFD.
In this paper, based on the analysis of easily blocked parts, the outlet blockage fault is focused to research.3D flow model of outlet blockage fault and trouble-free for control valve are established, the internal flow field and noise distribution are simulated by CFD, the results provides the theoretical foundation for further study on the blockage fault of control valve.
Fig. 2 3 d model of outlet blockage Fig. 3 Flow channel model of outlet blockage Simulation Pretreatment Before the analysis of internal flow field, flow channel model is need to meshing, and the simulation parameters should be set.
Fig. 11 Trouble-free local acoustic power Fig. 12 Outlet blockage acoustic power Conclusion Establishing the valve trouble-free and outlet blockage flow model, and applying the CFD numerical simulation of internal flow field and noise, obtained the following conclusions
References [1] Yantao An, Rujian Ma, Yong Wang, Simulation and Analysis the Internal Flow Field of Control Valve Bonnet Leakage, Applied Mechanics and Materials [J], 2013, 425, 2078-2081

Nowadays, numerIcal sImulatIon (often called computatIonal fluId dynamIcs, CFD) has been wIdely accepted owIng to Its advantage of the tremendous progress of computer capabIlItIes In recent years, and the advances In numerIcal modelIng.
Some of problems related to CFD In wInd engIneerIng are governIng equatIon dIscretIzatIon, turbulence model selectIon, numerIcal scheme, and the InItIal and boundary condItIons.
Developments In CFD for IndustrIal and envIronmental applIcatIons In wInd engIneerIng.
Urban wInd flows: wInd tunnel and numerIcal sImulatIons — a prelImInary comparIson.
NumerIcal sImulatIon of atmospherIc flow over complex terraIn.

The computational fluid dynamic (CFD) software was used to calculate the velocity field in atomization chamber of spray forming equipment.
The simulation model is based on the following assumptions: (a) Nozzle structure is a circular gap.
The present simulation work has been conducted with the CFD software Fluent, some parameters are set up as follows: (a) Atomization gas: nitrogen (compressible).
Therefore, only half of an axial section of the atomization chamber needs to be calculated in a 2D simulation.
Anderson, A coumputational fluid dynamics (CFD) investigation of the wake closure phenomenon, J.

Numerical simulation can provide some flow structures and solid distribution data not easily obtained in cold model experiments.
With the development of the computational fluid dynamics (CFD) method, more and more applications of CFD were implemented on study of gas-solid flow in circulating fluidized beds.
The experimental value is slightly smaller than the simulation value.
“Kinetic theory based CFD simulation of turbulent fluidization of FCC particles in a riser,” J.
“Numerical Simulation of Gas-Solid Flow in CFB,” J.Computer Simulation, 2009, vol.26(3), pp.272-275.

Computational Fluid Dynamics CFD, based on a finite volume method, is completed by utilizing the standard k-ε turbulence model.
In the present research, the simulations are performed using the commercial software ANSYS version 16.1.
It is found that the 126561-grid element is convenient for the CFD (less deviation).
The simulations are conducted to study the velocity and pressure distribution using three different twist ratios (y\w = 0.6, 0.7, and 1).
"Simulation of heat transfer in a tubular pipe using different twisted tape inserts".

Numerical simulation of thrust vector control for a 2D nozzle WangBo1，AnYuge2，ZhangMan1，ZhengYuan1 1.Wuhan Ordnance Noncommissioned Officers Academy , WuHan 430075; 2.
BeiHang University, School Of Jet Propulsion, BeiJing 100191 Keywords: vector control, numerical simulation, electric character, plasma Abstract.
Plasma thrust vector control can avoid shortcomings of traditional methods, it has a very good prospect.In present work a CFD simulation of a thrust vector control for a 2D nozzle is performed.The results showed that the change of the magnetic field can impress the vector turn of the nozzle flowfield. 1 Introduction The thrust vectoring technology has been applied in a number of advanced aircrafts due to its superior advantages that can significantly improve aircraft’s maneuverability and agility [1].
For instance, YB suzen, et al., utilized the plasma to control flow separation for numerical simulation [2], David A.
FLUENT is an internationally renowned CFD software, which has integrated plentiful of parameterization schemes and physical models, and can be used for numerical simulation of a variety of fluid problems.