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After the validating the feasibility on methods, the mixture preparation of a LPG center injection DISI engine is studied using common CFD software (FIRE v2009).
It should be pointed out that there is no LPG property database (60%propane and 40%n-butane) in former CFD software FIRE v2009.
Fig. 3(b) shows the CFD estimation results, in which the rich cloud position and the fuel mass fraction are in close agreement with the experiment result.
Fig. 4 Configuration of center injection concept Fig. 5 Computational mesh Simulation Results of Mixture Distribution at Part Load.
Fig. 7 is simulation results of LPG mass fraction at high load.

With some footbridge as the research background, different wind pressure produced by different train speed acting on the bridge surface simulated by CFD method has been adopted to the bridge, thus influence of train speed on vibration responses of footbridge induced by wind due to main line train are obtained.
The relevant investigations on vibration responses, wind pressure simulation and measurement on adjacent buildings induced by high-speed train have been studied recent years and acquired flourish achievements [1-5].
The whole procedure of wind pressure acting on the bridge surface can be adopted by CFD methods which can be seen from literature [6].
Numerical simulation of aerodynamic characteristics of roof passing by high-speed railway train [J].
Simulation for Wind Pressure of Footbridge Induced by Main Line Train [J].

The original proposal of a Detached-Eddy Simulation (DES) initiated and inspired various hybrid turbulence modelling approaches, which seek to selectively treat regions of flow as either a Large-Eddy Simulation (LES) or a Reynolds-Averaged Navier-Stokes (RANS) [1, 2].
This was also used by previous investigations in work such as the development of open jet wind-tunnel boundary corrections, parametric studies analyzing the effects of ground simulation in wind-tunnels, experimental work validating CFD simulations and the investigation of dynamic yaw behaviour [3].
The time-step size was chosen based on the Courant-Friedrichs-Lewy (CFL) condition and all simulation results presented here used a CFL value of 0.8.
PIV results captured slightly higher velocities closer to the decklid compared to the CFD which provided better resolution in this region representing the interaction of the detached shear-layer and the recirculation in the wake.
Additionally, CFD results revealed a small region of lower velocity, similar to a subtle separation bubble midway along the backlight at the furthest longitudinal plane (y=-45).

The Flow Analysis of Automotive Power Steering Gear Assembly Based on Fluent Kai CHENGa, Tangzheng LI b, Guangming LIc Changchun University of Technology, Changchun 130012, China a chengkai@mail.ccut.edu.cn, bboytangzheng@163.com, cgmli@mail.ccut.edu.cn Keywords: Automotive power steering control units, Flow field analysis, CFD model Abstract.
CFD Model Structure Geometry Model.
Fig. 1 Automotive power steering gear The numerical simulation of the key flow channel and the 3D geometric model in Catia software are shown as Fig 2.
The Export Flow Field Simulation of Automotive Redirector under the Standard Atmospheric Pressure.
The Simulation Field of Automotive Redirector as the Export Connected Pumping.

The gravity dust-catcher for blast furnace gas in one steel plant is researched with computer numerical simulation in this work.
To improve the dedusting system of the blast furnace that needs an overhaul in one steelmaking plant, the flow pattern and dust collection efficiency of exiting gravity dust-catcher is analyzed through computational fluid dynamics(CFD) method [3,4] in this work.
The dust-catcher optimization scheme based on CFD analysis is proposed for the blast furnace overhaul plan. 2.
The simulation of optimization scheme is made with the same parameters as existing duster.
Conclusion The gravity dust-catcher in one steel plant is analyzed with gas-solid flow simulation on computer in this research.

Guardo [10] studied the application of Computational Fluid Dynamics (CFD) software on DSF through the simulation on different ventilation mode.
Guo Yufeng [27] found that the smaller the spacing is, the more waste heat is drained through CFD simulation study with the DSF’s cavity width ranging from 350mm to 550mm.
Yang Huaqiu [33] found that it can effectively reduce the heat transfer coefficient of glass if adopting the high-performance Low-E glass filled with argon gas through the research with the methods of combining optical performance simulation software MQMC and CFD simulation software.
CFD simulation is difficult to be integrated with the building energy simulation software due to its complexity, but some other parameters model, such as lumped parameter model, the thermal and airflow network model, volume model and the zone model are easy to be integrated with building energy simulation software.
Energy comparison of applying CFD software for the simulation of double skin façade [J].Energy and Energy Conservation,2012,11:41-47 [28] Lin Yang.

To study the effects of guide vane with different vane wrap angles and relative positions of outlet edge on hydraulic performance of nuclear reactor coolant pump, three-dimensional steady numerical simulations were performed by using CFD commercial software Numeca.
Numerical simulation is performed with the two key design parameters optimized through surrogate model, the internal flow field is improved and then the hydraulic efficiency is improved.
In view of this, the paper established the nuclear main pump model with different vane wrap angles and relative positions of outlet edge, and each model is simulated by using commercial CFD software NUMECA, which is widely used in the field of turbo-machine.
Table 2 shows that optimization result from the surrogate model is close to the CFD calculations one, so surrogate model can be considered to meet the requirements of the precision.
Finally, through numerical simulation, it verified the feasibility, rapidity and rationality of the surrogate model optimization method.

Another treated the problem as a 3-D multi-phase turbulence flow by using commercial CFD softwares.
Simulation results of two-phase flow.
This, to some extent, can validate the precision of the simulation.
Optimized Design of the Toilet Siphon Pipeline Based on CFD Flow field Analysis.
Journal of System Simulation, 2008, 20(16):4412-4416

Numerical simulation with CFD is employed to reduce the cost and shorten the design period.
In this paper, five different grid numbers are selected for the numerical simulation.
The flow simulation of a lowspecific speedhigh-speed centrifugal pump.
The effects of computational domain and several keyissues on CFD simulated results for centrifugal pumps.
CFD simulation of 3D flow in large-bore axial-flow pump with halfelbow suction sump[J], J Hydro, Ser.

In this paper, we will provide a summary of general purpose computation of GPU, including graphic pipeline, the history of GPU architecture evolution, software environment, as well as the CFD applications on GPU.
The area known as Computational Fluid Dynamics (CFD) is one of the most prominent areas in scientific computing.
Because of the high computational requirement of solving N-S equations, researchers tried to map vary of CFD solvers to GPU.
By examining single- and multi-GPU lattice-Boltzmann simulations with ANOVA, they showed that all the lattice-Boltzmann simulations primarily depend on effects corresponding to simulation geometry and decomposition, and not on the architectural aspects of GPU.
In this paper, we provide a summary the GPU computing in CFD applications to guild the development CFD applications on GPU.