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SIMULATION STUDY ON THE PERFORMANCE OF VERTICAL AXIS WIND TURBINE N.A.Samiran 1, a *, A.
CFD simulation was conducted to analyze the flow characteristic and calculate the torque coefficient of all the rotor configurations.
The result obtained will be compared with the simulation result forvalidation purpose.
Result and Discussion For the first step of this study, validating the CFD simulation result with the previous experimental data is a must to ensure the method used is undoubted in terms of authenticity and reliable for further optimization step.
Summary · The results obtained by performing CFD simulation method from both steady and transient cases were compared with the experimental data from previous study

CFD and mathematical modeling software were used to help our designing.
According to the result of CFD, the design meets the intake requirements of the engine.
Our group has used the ICEM CFD and Fluent in the Ansys13.0 for CFD simulation of inlet flow field.
Summary In our study, by simplifying the inlet structure of the original electromagnetic valve actuator, applying the optimized CFD simulation inlet design and using mathematical modeling software to write electronic control procedures, we design an electromagnetic valve actuator applicable to the scavenging two-stroke engine.
I n the test, the air pressure sensor and the pressure sensor will be applied to measure the intake efficiency of the valve and the seating impact force, which will be used to help improve the design of electromagnetic valve actuator and verify the accuracy of the CFD simulation.

The numerical simulation was carried out with CFD and the equation of Helmholtz resonator.
Methodology followed in the acoustic simulation with CFD and the Helmholtz model 1.
The acoustic simulation is a process in which CFD and sound propagation are coupled.
The acoustic simulation is in the frequency domain, while the transient CFD analysis is in the time domain.
Acoustic model in CFD.

According to the above reaction chamber structure, using computational fluid dynamics software CFD - ACE - GEOM to build two-dimensional model, after divide grids, as shown in Fig.1 (b).
The results of the simulation show in Fig.3.
These are all consistent with the results of the simulation.
(a) Deposition effect of reaction intraluminal (b) The coordinates of deposition effect Fig.2 Figures of simulation results (a) When the power is 40W (b) When the power is 50W (c) When the power is 60W Fig.3 Graphs of deposition rate when power changes All of the above mainly through the computational fluid dynamics(CFD) simulation software to simulate the influence of deposition parameters on the deposition rate.
Conclusions This paper uses the software CFD-ACE + to study the deposition rate and the uniformity of the thin film under different power.

Simulation model of the flow is done by using Computational Fluid Dynamics analysis, CFD.
Simulations conducted in private with a variety of flow velocity and pressure of the sea water and various forms of channels.
Based on these data, the simulation model of the flow analysis is performed using Computational Fluid Dynamics, CFD, to determine the pattern of flow velocity and pressure, thus laying the turbine in the proper channels in order to generate optimal power.
Method of sea currents flow simulation using CFD Results and Discussion Based on the data speed of sea currents in the Strait of Ceningan, then it start to be used of foundation design for testing of sea currents.
Foundation design is done using CFD to obtain the movement of the maximum flow and velocity.

Recently, CFD (Computational Fluid Dynamics) is being more and more used in the investigation of the flow and thermal around high-rise buildings.
To validate the model, the simulation results were compared with wind tunnel data.
CFD model configurations In order to investigat the thermal effect on flow field behind the building, the geometry and computational domains as shown in Fig. 1, were created using ICEM-CFD.
Range of Ri=0.1-1.5 was used for this simulation [9, 10].
Conclusion CFD simulations and numerical study of single high-rise building with leeward wall heating and compared to isothermal case showed that the recirculation length was reduced approximately 10.6% in thermal case compared to isothermal case.

This paper presents tool for analysis of CFD adapted for flows in multi-staged stirred vessels with fractal pattern baffled for industrial.
The simulation of mixing process will be conducted by using multi-stage stirred tanks.
The simulation is carry out by using the standard k-ε turbulence model.
For example, Zalc et al. [8] was simulated a laminar flow in an impeller stirred tank using CFD tools.
The simulation model and the meshing were shown in Figure 3 below.

Wind load conditions can be obtained from wind tunnel tests, wind codes in design standards, or Computational Fluid Dynamics (CFD) simulations.
Optimization of building structures considering wind loads can be carried out by coupling the CFD simulation with structural optimization techniques.
Define the non-design domain properly and apply wind loads to the model from the results of wind tunnel test, wind design codes or CFD simulations; 3.
CFD simulates eight typical wind directions with steady-state analysis.
CFD method was combined with structural finite element analysis and BESO algorithm using both APDL and FORTRAN scripts in ANSYS environment.

In the CFD(computational fluid dynamics) study of hydrocyclones, the grid is a important factor to predicting the flow field.
The CFD study of the axial, radial and tangential velocity profiles have been carried out.
Nowakowski has Simulated hydrocyclones by CFD to make clear whether it is a realizable option or still a research challenge [2].
Two commercial CFD software of Fluent and CFX were used to simulate the hydrocyclone and get the Prediction of strongly swirling flow within an axial hydrocyclone [4].
The CFD simulation and experimental validation studies on hydrocyclone were carried out at the same time and got the conclusion that predictions using RSM model were found better in agreement with experimental results with a marginal error between 4% and 8% [5].

Numerical Study on the Flow Structure of a Steam-jet Vacuum Pump at Different Throat Length Dai Xiao- Chun Liaoning University Of Technology, Liaoning Jinzhou 121001, China emai: dxiaoch@163.com Keywords: steam-jet pump, flow structure, throat length, CFD simulation Abstract.
The aim of the study is to reveal the complication of the flow process of a steam-jet by using the simulation software package (FLUENT).
Steam-jet pump model In this study, CFD was used to analyze the flow phenomena inside a steam-jet pump.
The CFD simulation was used to visualize the change in the flow structure and mixing process inside the steam-jet vacuum pump as influenced by throat length.
(2) where: : including the effect of body force and energy source : density , , : velocity component : energy of flow rate : pressure : stress tensor : heat-source CFD model and Numerical Simulations According to others researches, the CFD method was a good research tool to investigate and predict the complicated flow in a steam-jet vacuum pump [4-6].