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This paper aims to investigate the particle dynamic behavior in a rotating drum with flights, based on CFD and experimental results.
CFD simulations In the present work, the Eulerian–Eulerian multiphase model along with the kinetic theory of granular flow was used in the simulation study.
The simulations were performed using the software FLUENT® 14.0.
Fig. 1 – Example of particle volume concentration distribution over the drum cross-section obtained by CFD simulation.
The results showed a good agreement between experimental data and CFD simulations.

Simulation of Solid-liquid Two-phase Flow Inside and Outside the Abrasive Water Jet Nozzle R.G.
Feng 1,e 1 Center for Advanced Jet Engineering Technologies (CaJET), School of Mechanical Engineering, Shandong University, Jinan, 250061，China 2 School of Mechanical and Manufacturing Engineering, The University of New South Wales, Sydney, NSW2052, Australia a haojieyuan@sohu.com, bchuanzhenh@sdu.edu.cn, cjun.wang@unsw.edu.au, dluxyu@sdu.edu.cn Keywords: Simulation, Velocity field of flow, Abrasive water jet nozzle Abstract: Simulation of the velocity field of solid-liquid flow inside and outside the abrasive water jet nozzle was studied by the computational fluid dynamics software(CFD).
As the development of computer technology and computed mathematics, a new subject about the flow and flow engineering-CFD becomes mature, the sign is that many CFD software appeared.
Many experts in domestics and abroad have used the CFD software to solve many problems which can not be solved by theory and experiment method.
This study used CFD software-Fluent to simulate the field of solid-liquid two-phase flow inside and outside the abrasive water jet nozzle.

Underfloor Air Cavity Created from Special Shaped Units and Different Intensity of Outdoor Wind Flow Tomáš Renčko1,a* and Anna Sedláková1,b 1Technical University of Košice, Vysokoškolská 4, 042 00 Košice, Slovak Republic atomas.rencko@tuke.sk, banna.sedlakova@tuke.sk Keywords: Underfloor Ventilation, Special Shaped Unit, CFD Simulation, Wind Flow Abstract.
To assessment the airflow in the air cavity the recently often used CFD simulations can be employed.
Conclusion The paper aims to highlight the possibilities of CFD computer simulation programs to assess airflow in underfloor cavities.
Šikula: CFD simulation of ventilated air cavity.
Sedláková: CFD Model of an Underfloor Air Cavity Created from Special Fittings and its Verification Using a Laboratory Model.

3D Numerical Simulation of the Process of Draining into a Lock Minghua Deng1,2,a, Zhu Gao3,b*, Dawei Mao4,5,c 1College of Hydrology and Water Resources, Hohai University, Nanjing, China 2Hydraulic Engineering Bureau of Dongting Lake, Changsha, China 3College of Hydraulic and Environmental Engineering, China Three Gorges University, China 4Nanyang Technological University, Singapore 5SINTEF Rock Engineering, Trondheim, Norway adengminghua@hnwr.gov.cn, bgaozhu.cn@gmail.com, cdawei.mao@sintef.no Keywords: Lock; Numerical simulation; Draining Abstract.
By CFD, a more precise estimation of the draining time and abundant details about the draining process were obtained.
Comparisons were also done between the SIM and CFD method.
Two approaches of SIM and CFD are given in the following paragraphs respectively.
While in the CFD approach, the fluctuations of water surface and inertia effect are considered and computed, so a longer time of about 42.1s is the solution for this problem.

For this, was performed simulations through the CFD and DEM techniques to evaluate the influence of the parameters: restitution coefficient (h ), friction ( m f ) and the coefficient of elasticity or spring ( K ) of the linear model "spring-dashpot".
Simulations Methodology.
In this work, an Eulerian control-volume multiphase CFD governing equation [10] was used to simulate the gas phase using the CFD package ANSYS FLUENT® 14.0.
The CFD-DEM calculates the velocity field for the fluid phase, and uses these data to calculate the particulate phase.
CFD-DEM Simulations.

The simulation analysis results will be compared and validated by practical spray coating experiment, so as to determine the reliability of simulation to implement the spray flow field simulation technique for large area uniform spray coating.
This study uses computational fluid dynamics (CFD) software to analyze the spray characteristic on the flow field distribution and flat plate coating in the case of fixed ultrasonic vibrator, vibration wave and array ultrasonic nozzle arrangement.
The simulation analysis results will be compared and validated by practical spray coating experiment to determine the reliability of simulation, and to implement the spray flow field simulation technique for large area uniform spray coating.
Research Methods This study uses three-dimensional CFD, finite volume method and SIMPLE algorithm and first order upwind difference method for numerical analysis, and uses standard turbulence model for related simulation calculation.
Point-6 31.53 26.107 20.77% 31.49 28.255 11.45% Point-7 29.26 26.002 12.53% 28.84 30.474 5.36% Point-8 31.39 24.834 26.40% 31.36 27.883 12.47% Point-9 31.96 *** 0.00% 32.16 27.679 16.19% Average value 31.7 25.51 24.28% 32.42 27.36 18.89% *** SEM fails in measurement Conclusion This study aims at the influence of the parameters of ultrasonic nozzle height, substrate traveling speed and PITCH on the spray coating film thickness distribution in the array ultrasonic atomization spray coating process equipment technology, and uses CFD computer simulation analysis technique and compares atomization flow field prediction simulation analysis result with real machine test, to build a reliable computer simulation analysis model for array ultrasonic atomization spray coating process.

There are many CFD commercial software such as PHOENICS, CFX, STAR-CD, FIDIP and FLUENT, etc..
Numerical simulation of the porous needs the characteristics and theoretical porous medium [1][2].
The flow speed simulation filled contours of fiber porous material are shown in Fig. 3.  
Simulation results show that the greater the porosity of porous, the X-axis speed is.
Song CFD simulation of the effect of upstream flow distribution on the light-off performance of a catalyticconverterEnergy Convers.

Numerical Simulation on Indoor Thermal Environment of Radiant Flooring Cooling System with Displacement Ventilation Wei Cai1, a, Wen Lv1, b, Lexian Zhu1, c and Pengfeng Yang2, d 1Institute of Building Energy Conservation, Ningbo University of Technology, China 315016 1School of Civil Engineering and Architecture, Ningbo University of Technology, China 315016 azlcaiwei@sina.com, b1980403640@qq.com, c476644201@qq.com, dnbjianhuan@sina.com Keywords: Numerical simulation, radiant floor cooling, CFD.
The thermal environment of the model office space was analyzed using Computational Fluid Dynamics (CFD) method.
Simulation Analysis, using CFD, of the indoor thermal environment of an office space cooled by a radiant floor cooling system combined with displacement ventilation system was then conducted.
Fig. 1: Office space for numerical simulation.
Simulation of indoor air flow was conducted based on a zero-equation turbulent model.

We used CFD method to numerical simulation of solid-liquid two-phase flow in nozzle flow inside the nozzle, simplified structure, used the RNGk- ε model for numerical simulation.
This essay uses CFD technology to do the numerical simulation of flow field in the nozzle and research the law and reason of wear, providing the basis for engineering application and structure optimization.
Use the Fluent software, we do numerical simulation, controlling the error under 1×10-5.
Summary Using the method of CFD can do the numerical simulation of the nozzle’s erosion condition in a certain degree, and it is easy to analyze the parts which gets abraded easily and the degree of wear.
，Numerical Simulation of Erosion and Particle Motion Trajectory in Centrifugal Pump [J].

In this paper, Computational Fluid Dynamics (CFD) method was used to simulate the air flow in the BiPV-Trombe wall.
The simulations of air flow and heat transfer in vertical channel of BiPV-TW were conducted using the commercial CFD code, FLUENT version 6.3[9].
Results Validation of CFD method.
The simplified model and comparison between the experimental data and CFD results for air outflow rate are showed in Fig 2.
In this paper, numerical simulation on the air flow for a fixed width of b=0.3m and height of H=1~6m have been conducted.