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The temperature measured at the critical locations was about 350ºC and the pressure applied in the system was calculated through a Computational Fluid Dynamics simulation (CFD), whose results are presented in the paper.
CFD Analysis.
The velocity profile was unknown at the inlet of the exhaust system; thus, in the simulations, a uniform velocity, with a mean value of 85m/s [16] across the section, was considered.
a) b) c) d) e) Fig. 4. a) Geometry of the exhaust system; b) View of the mesh used in the CFD analysis; c) Thermal insulation modelled; d) Velocity and Pressure distributions calculated; e) Flow lines inside the exhaust system with vortices visible.
Those values should also be confirmed at 350ºC, in welded joints of AISI316L with Cr-Mn steel, in order to simulate the local replacement of the current material; - The combination of high pressure and the existence of vortices, together with a turbulent regime, in the critical locations where the cracks were detected, were determined through CFD analyses.

The work presented here reports on the numerical simulation of an air-assisted boom spraying and droplets transporting process.
The simulation domain of the model is shown in fig. 1.
The numerical simulations were carried out with the commercial software of computational fluid dynamic, FLUENT6.3.
Evaluation of a pneumatic-shielded spraying system by CFD simulation.
Evaluation of air-assisted boom spraying system under a no-canopy condition using CFD simulation[J].

The influence of the tower, hub and nacelle are neglected which is a fair approximation for the upwind simulation.
The CFD model contains 3,650,000 nodes and the runs are conducted by Ansys-CFX 11.
A relatively good agreement between the CFD results and the test results can be observed.
Drag coefficient values Having extracted the induction factors from the CFD results, we calculate of the local AOA at different radial positions.
To achieve more accurate results, using more advanced CFD techniques with higher number of nodes can improve the CFD results and hence the calculation of this method will lead to more precise blade parameters.

This paper mainly discusses is the basic method of solving the Stokes-Navier equation and compare these, phenomenon involved include smoke, waves, fire, explosion, bubble and so on, and their simulation in Computation Fluid Dynamics (CFD) field is hot topic.
CFD emphasizes the accurate solution of question itself and gives a reasonable analysis and requires that the results of computer simulation can predict fluid motion of reality,but fluid animation focuses on the fluid visual effect which is generated in order to cheat audience.So, compared to the commonly used method in CFD, arithmetic of fluid animation is lower in precision but it is faster in calculation speed.
In a word, Eular fluid simulation animation is true to the general audience can not distinguish between computer animation and real film of the stage.
For example, now there is no simulation system of real-time interaction, there is no real simulation results based entirely on physical model.Now this paper will introduce the possible future new research directions about fluid simulation based on physical model.
Real-time 3D fluid simulation on GPU with complex obstacles[A].

The effect of the independent geometrical parameters on the performance of diesel engine has been studied by using CFD code AVL FIRE.
The discipline how the engine performance is influenced by the independent parameters is studied by using CFD code AVL FIRE 2008.
These series of combustion chambers are simulated by using 3D CFD code AVL FIRE 2008.
(a) Comparison of mean cylinder pressure between simulation and experiment, (b) rate of heat release on ω type and double swirl combustion chamber Figure 9.
[2] Shahrokh, Hajireza, “Application of CFD Modeling in Combustion Bowl Assessment of Diesel Engines Using DoE Methodology”, SAE paper 2006-01-3330

The simulation analysis turns out that the pump chamber pressure increases sharply in the later of sucking process because of the flow inertia, which is the root cause of sucking process outflow.
It’s measured With laser micrometer measuring the outflow will be distinct, when the open height of outlet check valve is more than 0.0015mm.[8] Simulation Of Sucking Process Outflow Simulation is to receive the pressure changing condition during sucking process outflow, in order to decide whether open the output valve to form outflow, so when modeling, the output condition can be ignored, and the deformation of the piezoelectric vibrator can be used as the translational motion.
In this way, the grid model can be simplified greatly, and the simulation result will not be influenced too much, the simplified fluid-structure interaction model is shown in Fig.4.
Fig.5 is the CFD grid model.
Refer to the simulation of the sucking process of the piezoelectric pump, the chamber pressure is not always minus during, outflow in sucking process is completely possible.

Fig.1.3D model of air cooled condenser Fig.2.Layout of steam duct of air cooled condenser Fig.3.Semi-model for CFD analysis Fig.4.Grid configuration and layer mesh of steam duct Solution Algorithm The steam flow is modeled as an incompressible, turbulent and single phase flow.
Turbulence modeling and grid generation are dominant factors that affect the ability of CFD to accurately predict flow treatment.
No-slip velocity condition is applied to all walls and for simulation flow field near the walls “enhance wall treatment” is set.
The CFD analysis of the steam duct shows that the flow detaches from the wall shortly after the inlet to the conical section in the main duct.
[6] Gatski, T.B. and Hussaini, M., 1996, “Simulation and Modeling of Turbulent Flows”, Oxford University Press, ISBN 0-19-510643-1