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The objective of this paper is to evaluate, through Computational Fluid Dynamics (CFD), the potential to reduce the internal temperature of a building located in the city of Rio de Janeiro, Brazil.
The temperatures of the bottom sides of the roof were obtained in loco in the analyzed residence and in a residence with similar characteristics, but without the GR, and constituted the input data for a Computational Fluid Dynamics (CFD) simulation, in order to obtain the average temperature difference between the internal and external environments of the buildings.
This information constituted the input data for the CFD simulation, carried out in Solidworks software, to obtain the average temperature difference between the internal and external environments of the buildings.
CFD simulation analyzes the thermodynamic parameters of a fluidic system and can be used to assess diffusion and convection in the environment, the aerodynamics of complex parts and designs, and temperature, pressure, and velocity in the fluid flow, both in laminar and turbulent regimes.
Although CFD models can effectively provide reliable results, they have limitations regarding the adaptations of the actual physical model to the boundary conditions entered in the program.

Optimization Design of Gasoline Engine Intake based on CFD Zhou Bin XiChang College XiChang City SiChuan Province China 153104941@qq.com Keywords: Gasoline Engine, Intake, Design, Test, FLUENT, CFD Abstract: This paper analyzed the structure of the intake about 65-gasoline engine, which take into account t of the shortcomings of the lack of intake, a new intake system was re-designed.
(4)Re-arrangement of the cylinder head inlet position, full use of the guiding role of the cylinder wall, form an effective intake swirl. 3 Original and improved CFD simulation contrast In order to shorten the development cycle, save development costs, During new product trial before, first numerical simulation of the original and improved intake, contrast design effect. 3.1 Geometric modeling In order to accurate numerical simulation, as far as possible to simulate the actual intake, used 3D modeling software Pro/Engneer establish geometric model, shown in Figure 3 to Figure 6.
Fig.7 Simulations model Grid Fig.8 Mesh refinement at the valve Seat 3.3 The calculation results Meshed model imported Fluent software to numerical simulation, separately simulated the gas flow that Valve lift of 2mm, 4mm, 6mm, 8mm, 9mm, 10mm, And were calculated the original and improved Ricardo swirl ratio and Ricardo flow coefficient, shown in Figure 9 and Figure 10.
(a) 4500r/min (b) 4000r/min (c) 3000r/min (d) 2000r/min Fig.14 Original and improved p-φ Indicator diagram contrast The result show that, the cylinder head inlet improved design, maximum cylinder pressure elevated, it proved engine combustion been improved, this is the root causes of engine power and economy both improved[3]. 5 Conclusion 1) Through structural analysis of the original 65-type gasoline engine cylinder head intake, improved design of the inlet structure. 2) Fluent simulation results show that, improved inlet swirl ratio and flow coefficient have increased, especially in the valve lift when the larger, swirl ratio improving effect is more apparent. 3) Test results shown that, engine power are significant improvement, improved engine available torque on each speed. 4) Cylinder head intake improved, Engine fuel economy becomes better, engine fuel consumption decreased on each speed.
Thermal structural analysis and optimization of cylinder head and block with different configuration by simulation and measurement.

Simulations show the satisfying performance and engineering value in demodulating the mixing AIS signals.
The CFD (carrier frequency difference) of the two signals are 2 kHz apart, and the code rate is 9.6 kb/s.
Fig. 3 Performance comparison between two Fig. 4 Performance comparison between two methods (CFD=0 kHz, 2 kHz) methods (CFD=6k Hz, 7 kHz) Fig. 3 shows SIR vs.
The CFD of the two signals are 0,2kHz apart.
The CFD of the two signals are 6,7kHz apart.

., Jeongja 27 Bundang Seongnam Gyeonggi 463-957, Korea a cdyim03@kmail.kimm.re.kr, bbsyou@kmail.kimm.re.kr, cjelee@expresslab.co.kr Keywords: Magnesium alloy, Horizontal continuous casting, Solidification behavior, Simulation Abstract.
The solidification behavior of AZ31 magnesium alloy plate during horizontal continuous casting (HCC) with constant velocity was analyzed by three-dimensional CFD simulation.
Recently computer-aided simulation is applied actively to evaluate the effect of processing variables on quality of product and to optimize the processing condition.
In this study, the solidification behavior of AZ31 magnesium alloy plate during horizontal continuous casting was analyzed as a function of processing variables by CFD simulation technique.
Simulation Procedure A commercial CFD package (Fluent) was used for simulation of solidification behavior during horizontal continuous casting.

In this work, a mesh-free CFD method called Discrete Vortex Method (DVM) is developed to acquire unsteady loads around 2D complex objects.
The simulation must include series of pure heaving oscillations and also pure pitching oscillations [7].
Forced-translation and forced-rotation simulations are performed using DVM to simulate flow over flat plate geometry.
Table 1 lists the parameters for the simulation.
The developed mesh-less CFD solver, Discrete Vortex Method, can accurately simulate the unsteady flow around an oscillating body.

Flows field analysis is done through computational fluid dynamics (CFD) software.
Unthreaded hole is experimented on the basis of simulation.
Flows field simulation analysis is done through computational fluid dynamics (CFD) software under the condition of changing injection pressure, abrasive diameter and nozzle elevation angle for thorough research and the better finishing process parameters are obtained.
Finishing Simulation.
Zhang: The Principle and Application of CFD Software (Tsinghua University Press, China 2004).

The surface wind pressure of temporary stand accompanied with cover is presented in this paper by CFD numerical method.
Then, the pressure coefficent of mentioned cases is analyzed from the simulation outcomes.
CFD numerical simulation method 1.1 Computational domain CFD (Computational Fluid Dynamics) numerical simulation is based on the Fluid's basic control equation, which can be able to acquire the space distribution state of the fluid through numerical calculation of the disperse fluid control units in numerical wind tunnel.
However, only a part of the whole atmospheric layer can be considered in numerical simulation which means man-made boundary wall is settled when we use CFD.
Analyze of large space truss temporary stand surface wind pressure based on CFD numerical simulation.

Based on the simulation results, the uniformity of the precursor distribution is better, with the increasment of the inlet flow, so the quality of GaN film is superior.
Previous studies on the temperature in MOCVD reactor chamber focused on the simulations of parameters such as the gas flow in the reactor and the shape of the reactor [5,6].Computational fluid dynamics (CFD) simulation is considered as a significant approach to predict the GaN film growth rate and to examine the dependence on various critical parameters.
Theoretical model The complete transport phenomena in a GaN MOCVD process can be well described using the above equations, all of which have been integrated into the commercial available code CFD.
From the simulation results, it is the fact that the increasment of inlet flow is benefical to the distribution of the precursor, so the high quality of GaN film has been grown.
Conclusions The CFD has been used to simulate a two dimensional mode of GaN deposition in a vertical MOCVD reactor.

In this paper, CFD technology is used to simulate visually the porting process，which causes the flow pulsation in water hydraulic axial piston pump.
In CFD calculation method, the relative motion between fluid is mainly achieved through mobile grid technology.
CFD calculation results In this paper, through the adoption of mobile grid on three kinds of speed and turbulence model, we use visualization simulation analysis for the flow state in the hydraulic pump of nine kinds of working conditions of the combination of three kinds of load pressure , the analytical results is shown in Fig.3 and Fig.4.
Journal of mechanical engineering, 2012 (22) : 13, 162-167 [5] Yu Lijuan, wang, Zhang Xuecheng to plunger pump flow pulsation active control method and simulation study [J].
Journal of xi 'an jiaotong university, 2013,47 (11) : 43-47 [6] Wang Xingkun, the east, hu ShangJianDong, double-acting vane pump flow field numerical simulation and characteristics analysis [J].

In this study, Computational Fluid Dynamic (CFD) is used coupled with detailed chemical mechanism (38 species and 69 reactions) for simulation of HCCI combustion of iso-octane and transitional flow inside the combustion chamber of a 2-stroke engine.
For simulation of HCCI combustion and transitional flow inside the combustion chamber, Computational Fluid dynamic (CFD) method is used coupled with detailed chemical mechanism.
Commercial CFD solver ANSYS-FLUENT 13 is used for solving the governing equations (Continuity, Momentum, Energy, Turbulence and chemical kinetics).
For chemical simulation of iso-octane oxidation, a skeletal mechanism including 38 species and 69 reactions is used [9].
For simulation of HCCI combustion and transitional flow inside the combustion chamber, CFD is used coupled with detailed chemical mechanism (including 38 species and 69 reactions).