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CFD (Computational Fluid Dynamics) is growing to be a very useful tool to study the multiphase flow characteristics.
Experimental and numerical model The simulation was conducted on the base of FLUENT software.
After the convergence of gas flow simulation, droplets were added.
Discrete phase model (DPM) was employed to simulation the tracks of droplets and the particle collection efficiency.
Evaluations and modifications on reynolds Stress model in cyclone simulations.

Numerical Simulation of Wind Pressure Distribution on Structure Roofs with Suspension Solar Panels Ying Zhou a and Qilin Zhang b Department of Building Engineering, Tongji University, Shanghai, P.R.China amyownsecret@126.com, b qilinzhang0@gmail.com Keywords: Numerical simulation, wind pressure distribution, structure, solar panels Abstract.
Wind tunnel tests often need expensive fee and long time but CFD calculation is rather efficient[1,2].
The results of numerical simulation, such as the time histories of the structure displacements, velocity and acceleration are obtained.
Distributed pressure coefficient nephogram of single roof when wind direction is 90° Conclusion The wind pressure acting on the sloping roof have been investigated based on a series of numerical simulations.
And some beneficial results are obtained from the numerical simulation.

CFD analysis was developed to determine the numerical data.
Boundary Conditions The applied boundary conditions in this simulation are common for an incompressible flow.
[3] Gertzos, K.p, Nikolakopoulos, P.G, and Papadopoulos, C.A., CFD analysis of journal bearing hydrodynamic lubrication by Bingham Lubricant, Tribology International, 2008, 41, 1190-1204

A CFD package STAR-CD is used for the analysis to study the in-cylinder flame distribution, heat release rates, in-cylinder pressures and temperatures, CO and NO emissions were studied in CI engine in conventional and in HCCI Mode.
CFD Model Set- Up: The piston bowl shape and 3D mesh of the piston bowl sector is shown in the Fig.1.The computational mesh consists of 0.312x106 cells.
CFD Model Validation: STAR-CD is a well known Commercial CFD package and is well validated.
Multi-Dimensional Simulation of n-Heptane Combustion under HCCI Engine Condition Using Detailed Chemical Kinetics, The Journal of Engine Research/Vol. 22 / Spring 2011.

The study of indoor thermal environment characteristics of office building effected by stratum ventilation Zeqin Liu1,a, Zhenjun Zuo2,b, Taishun Liu2,c 1Tianjin Key Laboratory of Refrigeration Technology, Tianjin University of Commerce, East Entrance of Jinba Road, Beichen District, Tianjin 300134, China 2School of Mechanical Engineering, Tianjin University, Tianjin, China aliuzq@tjcu.edu.cn, blxzj1012@126.com, cliutaishun1989@163.com Keywords: Stratified air supply Indoor thermal environment Numerical simulation Abstract.
From the results of the numerical simulation, it could be seen that when the supply air speeds were controlled between 0.5m/s to 0.9m/s, the thermal comfort, as well as the air supply efficiency in the human activity area was relative satisfactory.
Fig.1 Numerical simulation of office layout 1: dummy man; 2: analogue computer; 3: fluorescent lamp; 4: fluorescent lamp; 5: air outlet; 6: office desk Model introduction Figure 1 is a typical office building sketch chart , the dimension of the office is 5(L)x4(W)x3(H) meter.
The analysis of the results of numerical simulation Figure 2 was a distribution chart of vertical temperature in the middle place of office at the air-supply speed of 0.1 m/s and the size of air inlet with 1350x500 mm.
Validation of a CFD model for Research into Stratum Ventilation.

The author applied computational fluid dynamics (CFD) technology to numerically simulate the erosion law of the internal drill pipe in different drilling fluid displacement, different mechanical drilling speed and different cutting particle size.
CFD Model and Boundary Conditions.
The computational fluid dynamics (CFD) model established in this paper is shown in Fig. 1.
Fig. 2 Schematic diagram of meshing Internal Drill Pipe Simulation Results for Drilling Fluid Carrying Rock Erosion The influence of different factors on the erosion law of the inner drill pipe was analyzed by changing the initial conditions.
Numerical simulation of liquid-solid erosion in sudden expansion and contraction tube (in Chinese).

The numerical simulation analysis on flow field and temperature field in crystallizer were conducted in this paper.
High Reynolds number model was adopted on turbulence effect simulation
The numerical simulation results are coincide with practical production data.
[3] Lei Xu, Huixin Luo, numerical simulation based on ANSYS ICEM CFD and CFX, Wuhan University of Science and Technology , 2008
Mathematical simulation on coupled flow, heat and solute transport in slab continuous casting process.

An Evaluation of Drag Coefficient of Wind Turbine System Installed on Moving Car SOFIAN Mohd1, a, NURHAYATI Rosly2, b , REXCA A.Jamit3, c, SYARIFUL.S Shamsudin3, c, ASLAM Abdullah4, d 1,2,3 Faculty of Mechanical and Manufacturing Engineering, Universiti Tun Hussein Onn Malaysia, 86400, Batu Pahat, Johor, Malaysia asofian@uthm.edu.my, bnurhayati@uthm.edu.my, crexca_11@yahoo.com, dsyafiq@uthm.edu.my, easlam@uthm.edu.my Keywords: Aerodynamic performance, Moving vehicle, Wind turbine system, CFD Simulation, ANSYS FLUENT.
For this simulation, the car is assumed to be travelling at 25m/s (90km/hr).
Table 1 shows the simulation result of drag coefficient of each model with different wind turbine system position.
This is proven by this simulation where the drag coefficient of a car without the wind turbine is 0.39.
A standard k-ε model was selected as the turbulence model for numerical simulation.

Based on the regional climate characteristics in Chongqing, simulation has been carried out by ENVI-met software.
In 1960s, the application of wind tunnel promoted the development of building wind environment simulation, so as to closely link the research on outdoor wind environment and architecture aerodynamics.
With the rapid progress of computer simulation technology, professional scholars verified the simulation of Fluid Mechanics Computation was more easy to operate, convenient and flexible than wind tunnel simulation through many times of experiments and computer simulation, so it is more widely applied to the research on the external wind of group buildings[1].
Study on the present situation of wind heat environment in Jiefangbei commercial Pedestrian Street 3.1 Modeling and parameter setting Fig. 1：The construction of ENVI - MET model Based on the size of Jiefangbei commercial Pedestrian Street, the location and height of surrounding buildings and other information, this paper carries on CFD analysis grating and analysis model in ENVI-met according to the actual distribution of green plants and surface material properties in Jiefangbei commercial Pedestrian Street (Fig.1).
(2) It can be seen that outdoor thermal comfort in Jiefangbei commercial Pedestrian Street in summer is bad from the thermal comfort simulation results.

All simulations were conducted based on the general-purpose CFD code FLUENT 13.0®, which adopts a control volume based finite difference method to solve the conservation equations for mass and momentum.
Large eddy simulation method was employed in this work.
In the case of r=30, the simulation under predicted the spread width in the zone of large spread zone of w/d>2.00.
And in the case of r=60, the simulation over predicted the spread width in the zone of large spread zone of w/d>2.00.
Yang, Three-dimensional simulation of square jets in cross-flow, Physical review E, 69 (2004) 066302.1-066302.22