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Analysis on thermal and flow field of four-wheel drive EV controller Qi-Hongzhong 1015 room of Administrative building, longteng road 333, Shanghai University of Engineering Science, Songjiang District, Shanghai, China qihongzhong@sina.com Keywords: Electrical vehicle controller, flow field, thermal field, simulation Abstract: Electrical vehicle (hereafter EV) controller has proper function under the circumstances of interval thermal field due to controller sensitivity; therefore flow field and thermal field are key performance of controller application.
Methodology is discussed; optimal flow field and thermal field are determined by use CFD simulation, battery frame material is confirmed as well.
Method of flow field and thermal field control is applied in below content, which make it realized by CFD simulation method at the beginning of structure and layout design stage.
Fig. 6 Temperature distribution of components (aluminum) Fig. 7 Temperature distribution of components (aluminum) Summary Flow field and thermal field can be predicted by theory of heat transmission and fluid mechanics with CFD software.
Uniform thermal field is possible for complex controller container design with CFD method.

Performance Optimization of Building Integrated-Mounted Wind Turbine Marco Milanesea, Arturo de Risib and Domenico Laforgiac Full Department of Engineering for Innovation - University of Salento - Via per Arnesano, 73100 Lecce, Italy amarco.milanese@unisalento.it, barturo.derisi@unisalento.it, cdomenico.laforgia@unisalento.it Keywords: Wind Turbine, Taguchi method, ANOVA, CFD simulations.
Simulation model Geometrical model.
Several studies have used computational fluid-dynamics (CFD) methods to model wind flow around buildings by solving mass and momentum conservation equations [4].
This fact is a clear indication that even for very stable wind direction as it is the case for the CFD simulations, to exploit best the potential energy increase due to speed-up factor the turbine hub has to be located as far as possible from high turbulence regions.
Conclusions In the present work, CFD simulations coupled with the Taguchi method and the ANOVA techniques, allowed to identify the following guidelines for micrositing of BUWT.

The method uses CFD method to solve the oil film pressure field, instead of Reynolds equation, in order to obtain the oil film stiffness and damping.
In this paper, CFD and FEM are combined to research the dynamic characteristics of hybrid bearing spindle system.
There is no specific structural unit for the simulation of bearings.
Multi-Point Connection (MPC) can be used to complete the simulation of bearings.
Thus the correctness of the simulation results is demonstrated.

According to the development of a new type of oil purifier——HIGEE rotating oil purifier, this paper has carried out related numerical simulations.
This paper has carried out numerical simulation using CFD software——FLUENT.
Modeling flow through porous media and multiphase flow are two main respects in the numerical simulation.
a1)150g b1)150g a2)300g b2)300g c1)500g c2)500g Fig. 3 Numerical simulations of different accelerations of gravity: 1) Contour plot of the volume fraction of oil; 2) graph of the outlet volume fraction of oil Fig. 3 displays the numerical simulations of different accelerations of gravity.
Conclusion Two-phase porous medium flow model in the RPB was built, and by using CFD software——FLUENT the distribution of the phases in the RPB which is on different conditions has been simulated.

In this study, the commercial CFD package FLUENT 6.3 was used for analysis.
The Computational fluid dynamics (CFD) has been used in the last few decades to devise solutions and gain insight of the flow inside the mixing tank and CFD together with experimental validation has been able to improve the design of several reactor systems.
Hence CFD has been chosen in helping us to understand the flow within the blade passage of the distributor.
The simulation approach was based on the literature providing the data about blade design and the results were compared as a validation of the simulation results.
Contour 1-D divergent flow with varying cross-section Results and Discussion The simulation of the 2-D divergent blade began with simulation of a simplest geometry with only 1-D divergent.

Abstract: The influence of inlet structure which is the tangent and Spiral on water-coal separation in a Hydrocyclone is simulated by CFD in this paper.
The numerical simulation can provide a foundation for structural optimization design of hydrocyclone.
The simulation model is designed according to the engineering practice and national standards.
CFD Study on Inner Fluid Flow of Novel Hydrocyclone.
[7] Li Pengfei, Xu Minyi, Proficient in CFD simulation and actual cases, China Post and Press.2011.10.

Apply the CFD numerical simulation the internal flow field and noise when the control valve is bonnet leakage and trouble-free.
This article through the establishment of control valve bonnet leakage and trouble-free flow model, the application of CFD numerical simulation and analysis of the internal flow field and the distribution of the noise, it provides theoretical basis for further research of valve bonnet leakage.
Fig. 1 Bonnet outside leakage schematic Meshing and Simulation Settings The flow channel model need meshing before CFD simulation.
Conclusion Establishing the valve trouble-free and bonnet leakage flow model, and applying the CFD numerical simulation of internal flow field and noise, obtained the following conclusions
Numerical Simulation and Analysis of Interior Flow Field in Control Valves under the Blocking Fault [J].

Based on CFD software, three dimensional unsteady internal flow field numerical simulation of some type rotor oil pump is carried out.
And, the velocity and pressure simulation results at different speeds are obtained.
Based on acoustic finite element and infinite element method, CFD software and acoustic solver software are used to simulate the flow induced noise of rotor oil pump.
In this paper, by using the professional CFD software and the acoustic software, the internal flow induced noise of rotor oil pump is studied.
Fig.3 Flow characteristic curve at different speeds 2.2 Sound field simulation of oil pump 2.2.1 The simulation flow of sound field Based on the result of numerical simulation in internal flow field of the oil pump, couple the main variables such as pressure and flow velocity obtained from simulation results with acoustic solver.

Numerical studies of reactive pollutant dispersion in urban street canyon are few in literatures compared with those simulations of passive pollutant. [13] introduced the simple photochemistry of NOO3-NO2 into a large-eddy simulation model and examined reactive pollutant dispersion in a street canyon. [14] examined reactive pollutant dispersion in an urban street with a street aspect ratio of one using a CFD model incorporating simple NONO2-O3 photochemistry.
Fig.2a shows that agreement between the numerical simulation and wind tunnel experiment results are overall good.
The validation suggested that the present CFD model may be used for simulating airflow and reactive pollutant dispersion in an urban street canyon with aspect ratio of one.
The concentration of NO is much greater on the leeward side than the windward side, and this is consistent with field measurements and simulation results with passive pollutant emissions.
The present CFD model incorporates simple photochemistry, but could be a prototype to develop a CFD model with complex chemical processes for basic and applied research with a wide range of practical applications to urban atmospheric environmental problems.

Using CFD method, contrast and analyse the annular identical-cross-section straight pipe and annular hyperbolically curved pipe, the calculation results prove the superiority of the hyperbolically curved pipe.
With the development of boundary layer theory and CFD, it has been able to achieve the computer numerical simulation of a variety of complex turbulent pipe flow velocity distribution.
Computational fluid dynamics simulation software CFD is adopted to create a smooth hole with low Reynolds number, fully turbulent binding simulation model.
∂(ρk)∂t+∂(ρkui)∂xi=∂∂xjμ+μtσk∂k∂xj+Gk-ρε-2μ∂k12∂n2 (1) ∂(ρε)∂t+∂(ρεui)∂xi=∂∂xjμ+μtσε∂ε∂xj+C1εkGkf1-C2ερε2kf2+2μμtρ∂2μ∂n22 (2) μt=Cμfμρk2ε (3) Numerical simulation of the Intakes flow field and results analysis The numerical simulation and flow velocity distribution in the Internal flow field.
[4] Wang Fujun: Computational Fluid Dynamics Analysis—CFD Software Principles and Applications (Tsinghua University Press, Beijing, 2010).