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A CFD based model is proposed for predicting fouling process in spiral-grooved tubes.
Thus, numerical simulation, as an alternate method, has interested many researches from 1960s.
Validation of the calculation model To validate the CFD based fouling simulation method, a series experiments was carried out.
Conclusion In this work, CFD model was coupled with fouling model to predict fouling process in spiral-grooved tubes.
The simulation results were validated using experimental data.

However, there have been very few reports on prediction accuracy of CFD simulations about wind flow around buildings.
Furthermore, the effect of different calculation conditions (such as size of computational domain, grid resolution, boundary conditions and selection of turbulence model, etc.) on CFD simulations is not understood.
Using numerical CFD simulations have many advantages for optimizing wind tunnel experiments.
Blocken, G.J.F. van Heijst, CFD simulation of pollutant dispersion around isolated buildings: On the role of convective and turbulent mass fluxes in the prediction accuracy, J.
Yoshikawa, Cross Comparisons of CFD Prediction for Wind Environment at Pedestrian Level around Buildings.

A number of viscous flow CFD simulations have been instituted on standard ships such as: KCS, DDG- 51, KVLCC etc.[5~7].
According to published literatures, the accuracy of CFD simulation lies on the computational model, of which the ship viscous flow simulation’s accuracy lies on computational grid, turbulence model and boundary conditions.
Simulation and results Calculation object.
The tanker KVLCC2, one of the standard ship forms used in the CFD simulation comparative research is taken as the object.
CFD WORKSHOP TOKYO 2005, Tokyo, Japan, 2005 [7] Tian X.M.

CFD Simulation of Geometric Effects on Jet Reactors Bi Ronshan 1, a, Ma Lianxiang2 , Tan Xinshun1, Liu Zhendong3 , Chen Wenwu3 and Zheng Shiqing1 1Research Center for Computer and Chemical Engineering, Qingdao University of Science and Technology, Qingdao City, 266042, China 2 College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao City, 266042, China 3The Key Laboratory of Chemical Lasers, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian City, 116023, China aBirongshan@163.com Key words: CFD; Simulation; Jet reactor; Geometric.
Based on the fast process of acid-base neutralization, the effects of geometric parameters such as the angle of diffuser, ratio of nozzle diameter to mixing chamber diameter and the position of nozzle on mixing and reaction characteristics were analyzed using CFD in detail.
The velocity is constant in all the simulations at different geometric parameters; At the outlet, the boundary is the pressure boundary.
At first, the simulations are based on various m by varying the mixing chamber diameter with other geometric sizes constant ( m=0.55, 0.45, 0.35 and 0.25).
In the numerical simulations the diffuser anglewere set 0°, 3°, 8°, and 14°, respectively.

The solidification model is vital to the simulation of casting process with mushy zoned involved.
The model has been realized on the commercial CFD package, in which the solid and liquid of metal are united in one frame.
The macro modeling for solidification is vital to the precise simulation of casting process.
However, the new features in CFD (Computational Fluid Dynamics) and FEA (Finite Element Analysis) technologies may not be involved, which has been maturing progressively and would improve the casting simulation.
The velocity is pretty small, however the flow pattern can be observed clearly because of the high accuracy of CFD solver.

Simulation on combustion process of 16V240ZJ diesel engine WANG Juan a, WANG Feng b and LI Minghai c Dalian Jiaotong University, China awangfeng19840224@yahoo.cn, b77348963@qq.com, cdlminghai@vip.sina.com Keywords: CFD；numerical simulation； the advance angle of fuel；moving mesh Abstract.
Three-dimensional computation of spray and combustion in 16V240ZJ diesel engine was performed by CFD numerical simulation tool FIRE.
By calculus simulation, we have a thorough understanding of the combustion process of 16V240ZJ diesel engine.
Simulation results may seen in Figure 10.
Summary (1) It has the guiding sense regarding the chamber's design and improvement by simulating through CFD software.

The present work herein is the CFD simulation of throat pressure in venturi scrubber.
In this simulation, mean size of droplet 0.1 mm is taken.
Pressure at throat for different gas mass flow rate Conclusion CFD simulation of venturi scrubber is conducted for the study of hydrodynamics of gas-liquid in venturi scrubber by using Euler-Euler approach.
The simulation results show good agreement with experimental results.
Acknowledgements The author gratefully acknowledges the support of supervisor, CFD simulation Department of College of Nuclear Science and Technology, HEU and Gu HaiFeng team for experimental work.

This work presents the study of UWS injection spray using commercial available CFD code, Fire v8.3.
The CFD model containing both evaporation of water and thermal decomposition of urea is used in the present simulation.
CFD Methodology Fluid Flow and Spray.
To evaluate the influence of variation of exhaust gas temperature, and injector mounting positions, known spray parameters are essential for CFD simulation as boundary conditions.
Simulation results are compared with experimental values obtained by Kim et al. [4] and NH3 conversion efficiency of 80~90% is observed during the simulation and is in-line with current trends.

CFD Simulation of Prediction of Pressure Drop in Venturi Scrubber Majid Ali1,a, Yan Changqi1,b, Sun Zhongning1,c, Wang Jianjun1,d, Khurram Mehboob1,e 1College of Nuclear Science and Technology, Harbin Engineering University, Harbin 150001, China aalihrbeu@gmail.com,bchangqi_yan@163.com,czhongningsun@yahoo.com.cn, dwang-jianjun@hrbeu.edu.cn, ekhurramhrbeu@gmail.com Keywords: NPP, FVCS, Venturi Scrubber, Pressure Drop.
In this research, CFD simulations of prediction of pressure drop in venturi scrubber has been carried out.
The boundary conditions for the CFD venturi model are defined as follows: At the inlet, the mass flow rate of the gas is specified.
The grid independency plays a vital role for CFD simulation.
Therefore, the model containing 161252 mesh elements is selected for entire simulation.

Evaluation of thermal comfort in an air conditioning room using a CFD model Fuqiang Guo, Ruibin Mei a, Lei Zhang, Junwei Fan, Minxue Li and Yanli Tang Northeastern University at Qinhuangdao Branch, Northeastern University, Qinhuangdao 06600, China ameirb1999@gmail.com Keywords: air conditioning, CFD, thermal comfort, airflow Abstract.
Additionally, such as apartments [5], offices [6], classrooms [7] and museums [8] were also studied by number of scientific papers with the application of CFD models.
In the present work, CFD simulations were undertaken to assess the summer thermal environment in a typical computer room of ceiling type air-conditioner of eighteen stories building in NEUQ.
Simulation conditions.
The calculated temperature has a good agreement with the measured value and the CFD model is satisfying in the research.