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In this study, a lead-acid battery has been simulated numerically using the CFD commercial software package FLUENT.
Recently, Esfahanian et al. [7] introduced an improved and efficient mathematical model for simulation of flooded lead-acid batteries based on Computational Fluid Dynamics (CFD) and Equivalent Circuit Model (ECM).
This model inherited the accuracy of CFD model and the physical understanding of ECM.
Torabi, Numerical simulation of lead-acid batteries using Keller–Box method, J.
Mosahebi, An innovative computational algorithm for simulation of lead-acid batteries, J. power Sources, 176 (2008) 373–380

Analysis of Horizontal air-separator Field of Municipal Solid Waste Based on CFD Shuliang Zoua,Yiqiang Liub, Dewen Tang c Key Laboratory, School of Mechanical Engineering, University of South China, Hengyang, 421001, Hunan, China azoushuliang@usc.edu.cn, bliuyiqiang2007@yeah.net, c26379198@qq.com Key words: MSW (municipal solid waste), Horizontal Flow Separating Field, CFD, numerical simulation.
Therefore, it is very difficult to study with specific simulation according to the actual situation.
To simplify the solving process, some simplifications and assumptions on particle shape and size of MSW and airflow of Horizontal air-separator were made in establishing the wind filed simulation model.
（5）The gas flow rate at the entrance of Horizontal Airflow winnowing machine device is uniform, while, the velocity of municipal solid waste particles entering the winnowing simulation field at the entrance is idealized as constant speed and is far less than the gas flow rate
Investigation and simulation of a cross-flow air classifier[J].

In this work, pitch motion of the biplane is selected to simulate the disturbance, using the application of Computational Fluid Dynamics (CFD) codes in viscous flow (NS).
In the simulation, The conservation form of Navier-Stokes equations (Eq.3) are solved by a finite-volume scheme.
The one-equation Spalart-Allmaras model is selected to simulate the turbulent flow and the Pseudo-time iteration method is employed for unsteady simulations
Since pitch motion of the biplane is selected to simulate the aerodynamic disturbance, method of mesh motion plays an important role in CFD.
In order to study variation laws of critical frequencies (), more simulations are undertaken with different amplitudes of the sinusoidal pitch angles.

However, some of the simulation results lack accuracy.
Wang and Yan [4] summarized the CFD applications in biomass thermochemical conversion and system design.
McGrattan et al. [6,7] developed a three-dimensional CFD tool of Fire Dynamics Simulator (FDS) in the fire protection field.
N: CFD Analysis of spatial distribution of various parameters in downdraft gasifier, Procedia Engineering Vol. 51 (2013),.p.764-769 [4] Wang, Y., and Yan, L.: CFD studies on biomass thermochemical conversion-review.
R., Brink, A., and Hupa, M.: CFD modeling to study fluidized bed combustion and gasification, Appl.

Introduction Study of the flow over car geometries can be performed by numerical simulation．During the recent past，significant progress in the field of computational fluid dynamics(CFD) has also been made，and CFD is gradually becoming established as an efficient tool in vehicle design．The majority of numerical investigations in the field of car aerodynamics have been concerned with grid generation problems around complex three-dimensional geometries，as well as，with the prediction of the aerodynamic coefficients．Takagi [1] presented a review of the applications of computers to automobile aerodynamics, including external flow over car geometries flow in passenger compartments and flow in engine cylinders．Reviews of CFD methods used in automobile aerodynamics have also been published by Kobayashi el al.[2] and Rieger et a1 [3].The research efforts of several other authors in this field can be found in the references of the above review papers．Shaw [4] compared different commercial CFD packages
The objective of the present work is to undertake a complimentary numerical investigation of the flow over a two-dimensional car model.Numerical simulation has also been performed using an incompressible Navier-Stokes code which is based on a pressure-correction algorithm of the SIMPLE-type．
A review of CFD methods and their applications to automobile aerodynamics.
[31]H Rieger F Magagato W Fritz and W Seibert .Numerical simulation of turbulent flows around complex car shapes experiences.

The CFD (Computational Fluid Dynamics) method is used to research the turbulent planar impinging jet of gas knives.
In view of the situation, numerical simulation is now presented in this paper.
In numerical simulation of impinging jet, the standard k-ε model and RNG k-ε model have been mostly applied [2-5].
FLUENT 5.4, one kind of CFD software, is implemented in numerical simulation.
It demonstrates that the CFD method can be practically applied in jet field, and that the realizable k-ε turbulence model can successfully predict the impinging jet

CFD Modeling There are two representative CFD models developed to simulate the gasifier, the non-premixed combustion model and the species transport model, respectively.
Kojima, Numerical simulation of entrained flow coal gasifiers.
Kojima, Numerical simulation of entrained flow coal gasifiers.
Zhong, Three-dimensional simulation of fluidized bed coal gasification, Chem.
Zitney, Gasification CFD modeling for advanced power plant simulation, Proceedings of the 22th International Pittsburgh Coal Conference, Pittsburgh, Pennsylvania, September 12, 2005

The reliability of the simulation programme is validated by comparing numerical simulation result with engine test data.
So, in recent years, no numerical simulations have been conducted for the multicomponent propellant.
Then a new numerical simulation programme, based on CFD methodology, aimed to the rocket engine using the multicomponent propellant in the absence of metal, is developed with exiting flow and combustion theory and models for liquid rocket engine.
Numerical Simulation Produces The simulation model includes prediction of a coupled two-phase flow.
Although it is not an unerring precision, this is acceptable as CFD solvers are not yet fully capable of accounting for every dynamic variable affecting a fluid flow.

Simulation Study on The Spiral Flow Under Two Different Intake Ways Jianhua Lv1,a, Xue Li1,b , Xu He2 and Hongyan Chen2 1Institute of Chemical Engineering, Hebei University of Technology, Tianjin 300130, China actstljh@163.com , bctstlixue@163.com Keywords: CFD, spiral flow, secondary vortex Abstract.
The use of computational fluid dynamics (CFD) numerical simulation study gas flow state of the cylinder body, not only able to get flow macroscopic properties in conditions of the shape of the gas inlet, air intake way and other parameters, and also can get a lot of the microscopic information of the internal flow field[6].
Experiment CFD model establishment.
We adopt the the RSM for the simulation.
Simulation results and analysis are as follows.

These systems are designed by fire protection engineers using design guides and computer modeling techniques such as Computational Fluid Dynamics (CFD) that have become more accepted among Fire Protection Engineers.
FDS (Fire Scenario)- CFD techniques have been used in engineering analysis of the ventilation system in the fire scenario for many years.
FDS is a powerful CFD model of fire driven fluid flow developed by NIST, which has been applied widely in solving practical fire problems in fire protection engineering.
Ø Fire is Generated in 8th ROW, Middle Column , 9th Seat Parameters of Solver Ø The simulation type applied Large Eddy Simulation (LES) Model.
The Simulation programme’s likes Energy Plus, COMFEMN, CONTAM, FDS, EXIT89, Radiance, ANSYS, ODEAN BEES and other simulation tools should be used right from Initial stage to save Life, Property, Energy in an Environmentally and Financially Viable way.