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A numerical simulation of electric and hydrodynamic field’s distribution in an electrohydrodynamic pump is made, with the mean to simulate and to determine numerically the liquid pressure and velocity.
Latest studies in the field of EHD micropumps [6,7], have proved the utility of simulation the electrohydrodynamic phenomena using specific CFD programs.
To determine the charge density and electric field distribution as well as the flow parameters of velocity, pressure, and mass flow rate inside the EHD pump, a CFD software as Comsol Multiphysics can be use.
The maximum strength of the electric field obtained from simulation is E=7.34·106 V/m, at the high potential electrode tip (at the emitter).
Conclusions Using CFD software for numerical simulation of electrical and hydrodynamic fields distribution in an electrohydrodynamic pump for dielectric liquids is useful for visualize and for a better understanding of the process.

However, with the fast development of computer technology and computational fluid dynamics (CFD) during the past two decades, numerical simulation has become one of the common methods used to investigate the fluid-structure interaction problems.
Currently, RANS codes are becoming more and more popular in VIV simulations.
Simulations of 2-dof circular cylinder at low Reynolds number are performed.
Journal of Southeast University (Natural Science Edition), Vol. 35, SUP Ⅰ (2005), pp. 35-39 [17] Xu Feng, Ou Jin-ping, Xiao Yi-qing: CFD numerical simulation of flow-induced transverse vibration of a square cylinder.
Journal of Harbin Institute of Technology, Vol. 40, No. 12 (2008), pp. 1849-1853 [18] Xu Feng, Ou Jin-ping, Xiao Yi-qing: CFD numerical simulation of flow-induced vibration with different cross-section cylinder.

The method of manufactured solutions is used to examine the global discretization error and finally a comparison between finite volume particle method simulations of an incompressible flow around a fixed circular cylinder and the numerical simulations with the CFD code ANSYS FLUENT 14.0 is presented.
Simulation of incompressible flows is a very important topic in computational fluid dynamics [7].
Simulation of flows over a cylinder is a fundamental fluid mechanics problem of practical importance.
We chose an evaluation of FVPM data with CFD data for flow over a fixed circular cylinder at Reynolds number of 200.
Layton, Mathematics of Large Eddy Simulation of Turbulent Flow, Berlin, Springer Verlag, 2006

Based on the wind resistant design of a super long suspension bridge —the Aizhai Bridge, which is located in the mountainous area and designed across a deep valley with a main span of 1176m, as shown in Fig 1, in this paper, the commercial CFD software FLUENT is used to simulate mountainous valley terrain and investigate the characteristics of the local valley wind field as well as its effects on the wind design.
One of the difficulties encountered in the simulation is the construction of the large scale digital terrain model with suitable resolution.
Fig 1 Perspective view of the Aizhai Bridge Fig 2 Domain of integration for simulation Fig 3 Point-cloud data of the selected domain Fig 4 Three dimension terrain surface generated Mesh of the domain After the surface model of the terrain was generated, it can be input into the CFD software of FLUENT to form the volume for the numerical simulation.
It is well known that the best numerical mesh is the result of a compromise between computer simulation requirements (memory and time), accuracy, and topographical resolution.
The volume of simulation domain was separated into two parts from the height of 300m above the surface for the purpose of generating better meshes.

In this paper, an urea spray model is established and simulated by CFD software FIRE with different nozzle structure parameters such as nozzle hole number, nozzle hole chamfering and spray angle.
Fig. 1 shows the simulation modeling of urea spray.
Simulation results of 4 nozzle hole.
Simulation results of 8 nozzle hole.
Wen: Muti-dimensional Numerical Modeling of Spray Mixing Process in Desiel Engines Bsed on CFD(PhD thesis, Huazhong University of Science and Technology 2004).

Numerical investigation of pneumatic regulating on low-pressure guide vane Yajie Qina School of Jet Propulsion, Beihang University, Beijing 100191, China a569421550@qq.com Keywords: Variable cycle engine, pneumatic regulation, CFD.
A CFD analysis has been carried out to study the impact of jet parameters (jet position, Angle, flow rate and velocity) to the turbine flow.
The numerical analysis was carried out using the ANSYS CFX-12 CFD package.
Fig. 2 Computational grids of the turbine Fig. 3 The jet pipeline location Performance simulation results The jet position.

A Novel Design of Air-cooled Battery Thermal Management System for Electric Vehicle Jiang Chao a, Tang Zhiguo b*, Hao Jiaxin c，Li Huiqing d School of Mechanical and Automotive Engineering, Hefei University of Technology, Hefei, 230009, China ahfutjiangchao@mail.hfut.edu.cn, b*tzhiguo@hfut.edu.cn, chaojiaxinxin@163.com, dlihuiq@mail.hfut.edu.cn Key words: Battery pack; Thermal management system; Simulation.
Visualized simulation analysis of the thermal management system is carried on under different working conditions by CFD, then the structure parameters will be optimized.
In this paper, a novel air-cooled thermal management system is designed, and simulation analysis of the thermal management system will be carried out to optimize the structure parameters of battery pack, and to evaluate the thermal performance of cooling and preheating conditions. 1.
Transient simulation has been conducted by CFD under high-temperature and low-temperature conditions.
Numerical simulation results of final project The battery arrangement of Option 2 is adopted in the end, two fans work alternately and the work cycle is 120s, and the power of the evaporator and the heater are both 400W.

So, to handle with the CFD problem using LBM, there is just need to solve streaming and colliding function.
For some simulations, modeling the flow in a right way or not is depended on the implementation of boundary condition.
Lid-driven cavity flow problem is a benchmark problem to validate novel CFD algorithm and provide theoretical basis for some engineering design.
And, the simulations of lid-driven cavity flow with different inflow angles are implemented in section 3.
The implementation of boundary condition in D3Q19 LBM is critical for simulation.

With the Computational Fluid Dynamics analysis techniques become more sophisticated, the study on the application for explosion based on CFD have increasingly gained wide attention in industry and academia.
P.Hoorelbeke et al. got a summary analysis for the commonly used in explosion risk assessment techniques, and gave the latest research on risk assessment of explosion using CFD technology [9].
However, there is only a little study on numerical simulation model of explosion mitigation with water spray.
The total size of simulation is 100m × 80m × 40m.
Shapes of the equipment were modified according to the need for simulation.

In order to get insights into the heat transfer of supercritical LNG, numerical simulations were carried out in this paper for investigating heat transfer of LNG in horizontal circular tubes under supercritical pressure.
The accuracy of numerical simulations of heat transfer in supercritical fluid may depend on turbulence models.
Previous CFD study [1] using the Fluent code revealed the RNG turbulence model gives reasonable results in predicting heat transfer of supercritical water, therefore the RNG turbulence model was used in this study. u is the velocity vector, while is velocity component in special direction .
Numerical computations were carried out using the popular CFD package Fluent 6.3.26 [3].
Fig. 3 Velocity distributions on the tube symmetric plane Fig. 4 Pressure distributions on the tube symmetric plane Conclusions Three-dimensional computational fluid dynamics (CFD) based modeling and simulation have been conducted to investigate the heat transfer and flow performances of supercritical LNG in the horizontal circular tubes for application in LNG vaporization.