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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].

By numerical calculation with simulation of software FIRE, the effect of different combustion chamber structures on the cylinder pressure, temperature, accumulated heat release and the parameters such as NOx mass fraction was analyzed.
From the simulation results, the optimized fuel injection advance angle had greatly improved the diesel combustion and emission performance.
Based on diesel engine combustion as the research object, this paper had established a numerical model of combustion procedure of diesel engine by means of CFD simulation, studied the influence of different parameters on the combustion performance and optimized the structural parameters of diesel engine.
From the perspective of the engineering CFD calculation, model is a widely applied turbulence model currently, heat transfer and combustion flow can be calculated.
Simulation and analysis of the diesel engine combustion process based on FIRE [J].

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

Isogai et al. [10] performed Navier-Stokes simulations of flow over a NACA 0012 aerofoil undergoing combined pitching and plunging motion at Re = 105.
For all simulations, steady state solutions are first obtained.
Simulation of Flow about Flapping Airfoils using Finite Element Incompressible Flow Solver, AIAA Journal, Vol. 39, pp. 253 - 260
Eighth Annual CFD Symposium, CFD Division of Aeronautical Society of India, Bangalore, CP 18
Proc. 9th Annual CFD symposium, CFD Division of Aeronautical Society of India, Bangalore

Numerical simulation is developed in this paper for these two cases.
Numerical Simulation on Heat Transfer Calculation of a Pipeline Numerical simulation of heat transfer in pipelines with seams and annulus.Temperature field of a pipeline which has been tested during operating is numerically simulated by CFD.
Fig.3 Temperature field of a pipeline with seams and annulus Fig.4 Local temperature field of the insulation joints Numerical simulation of heat transfer in pipelines with insulation sinking.Temperature field of a pipeline which has been tested during operating is numerically simulated by CFD.
Fig.5 Temperature field of a pipeline with insulation sinking Conclusion Numerical simulation is developed in this paper for two cases.

That is, it reduces the dependence of step in the drag reduction design, and improves the robustness of the adjoint-based airfoil drag reduction optimization design method. 1 Introduction With the rapid development of high-performance computing, the high-fidelity CFD codes such as Reynolds-Averaged Navier-Stokes (RANS) codes have been widely applied to aerodynamic design of aircraft.
The CFD-based aerodynamic design methods can be mainly categorized into two classes: optimization design and inverse design.
From an optimization point of view, both optimization design and inverse design need to solve an optimization problem by coupling optimization algorithms with CFD simulation codes.
When high-fidelity thus time-consuming CFD codes are employed, the optimization procedure becomes demanding.
The Baldwin-Lomax zero-equation turbulence model is used for turbulence flow simulation.

Dular et al.[7] studied the unsteady cavitating flow by the numerical simulation and experimental measurements.
OpenFOAM is an object-oriented c++ library of classes and routines of use for writing CFD codes.
It has a set of basic features similar to any commercial CFD solver, such as turbulence models and discretization schemes.
The mixture cavitation model for the mass transfer by Kunz et al. was used in numerical simulation of cavitating flows.
SIMULATING CAVITATING FLOWS WITH LES IN OPENFOAM, V European Conference on Computational Fluid Dynamics, ECCOMAS CFD 2010, J.

The NG dispersion for LNG releasing on water was presented by this paper, and DNV’s UDM model and CFD model were combined as a new model, which was validated credibility by simulating a case.
The results of numerical simulation were treated by TECPLOT software, and then a 3D concentration of NG can be shown.
Numerical simulations (1) Case description Atmospheric stability is level D.
Computational Fluid Dynamics-CFD software principle and application[M].
Simulation Study on Instantaneous Release of LNG[J].

In this paper, the hydraulic efficiency and circumferential force fx are selected as evaluation parameters , cascade CFD models are built and calculated with the different modified angles.
Fig.4 Inlet flow angle modification influence diagram Analysis of Outlet Flow Angle Modification It is similar to the inlet flow angle calculation that the CFD model is built and calculated.
Mechanics and Simulation of Geared Turbodrill.
CFD Simulation of Multistage Turbine Flow Field.
Computational Fluid Dynamics-Principle and Application of CFD Software.( China Tsinghua University Press, Peking,2004) In Chinese

This article built the 3d modeling of automobile exhaust muffler and through simulation analysis obtained the muffler internal acoustic pressure distribution and changes of insertion loss with frequency.
The traditional methods of muffler design which combining the experience and test leads to a long period of production design and high cost with the development of computer technology, especially the development of the numerical simulation software, to set up a new approach for the design and development of muffler.
Analysis module and calculate the hydrodynamic by FLOTRAN CFD in ANSYS.
The pressure loss calculation according to the results of the muffler CFD simulation, at the inlet and outlet pipe straight part of the central choosed a cross section measurement, measured the average total pressure of two section and got the pressure loss.
Beijing institute of technology press,2004 [5] Hu Xiaodong,etc, Resistance of single and double cavity muffler pressure loss research of CFD[J].