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Currently, one dimensional simulation (1D), three dimensional simulation (3D) and hybrid simulation are commonly used in CFD simulation of the intake and exhaust systems.
Hybrid simulation means coupling of one and three dimensional simulation.
In this paper, CFD technology was used to optimize exhaust runner of GW15 gasoline engine.
Finally, verified simulation results though experiment. 1D Simulation 1D Modeling.
(3) In the design of exhaust runner, the performances of engine could be predicted precisely using CFD technology.

When the air distribution is modelled in the ventilated space usually CFD simulation is performed and simplified boundary conditions are defined at the locations where the supply air enters the room.
Therefore the investigations were conducted with 3D CFD.
In both cases transient simulation was performed.
CFD has many deficiencies and uncertainties [10].
CFD, 2000

Two CFD approaches: Reynolds averaged Navier-Stokes (RANS) and large-eddy simulation (LES) were used and compared with the previous experimental results of effective ventilation rate.
Numerical simulation details Calculation cases.
The CFD calculations were performed for three cases: Case-RANS, Case-LES and Case-LES-t.
In the present study, the CFD simulations were performed in a coupled way, i.e. the outdoor and the indoor (basement) flow fields were calculated simultaneously and within the same computational domain (cf.
Both the experiment and CFD simulations well predicted the decreased ventilation rate at the incidence angle of 67.5º (Fig. 4).

The Environment Temperature Simulation Research of Gyroscope Yuan Shuaia, Wang Ya-binb National Key Laboratory of Electro-mechanics Engineering and Control, Beijing Institute of Technology, Beijing 100081, P.R.China abit_yuanshuai@163.com, bwangyabin@bit.edu.cn Keywords: Guided Gyro, Thermal analysis, FVM, CAE, CFD Abstract.
Fig. 2 CFD mesh Subpanel Fluid grid's quality requirements have some particularity.
The Gyroscope Temperature Control Device Temperature Field Simulation Calculation.
In addition, it provides the data format interface to all major CFD solvers.
The numerical simulation of temperature field[M].Chongqing.

Simulation domain.
Simulation grids.
Simulation results of series speeds.
Hino: 2005 Proceedings of CFD Workshop, NMRI report (Tokyo, Japan, 2005)
Yu: Research on Calculation and Prediction for Ship Resistance Based on CFD Theory (MS., Shanghai Jiao Tong University, China 2009).

The purpose is to validate TRIP3.0 for the simulation of transport configurations.
Numeric Simulation of Trapezoidal High Lift Wing The second configuration of AROF-1 is trapezoidal high-lift wing models, which is one of the most common test cases for CFD software.
Numeric Simulation of Trap-Wing with Full-Span Flap.
Numeric Simulation of Trap-Wing with Part-Span Flap.
Validation of TRIP2.0: Numerical Simulation of DPWII Complex Configuration.

Most of the computational research interest has been focused on the simulation of the fluidized bed hydrodynamics, of multiphase flows using the Eulerian-Eulerian for non-reactive fluidized beds [3, 4] and chemically reactive flows with heat transfer.
The scope of the present simulation is to determine the heat and momentum transport inside the reactor and the chemical reactions of the palm fruit biomass particle.
The model combines the bed hydrodynamics and fast pyrolysis process in a using CFD FLUENT 12 computer code.
Nevertheless, the CFD technique may assist to optimize the design of the reactor for distributed farm scales.
Mtui: CFD Modeling of space-time evolution of fast pyrolysis products in bench-scale fluidized bed reactor.

Introduction CFD (computational fluid dynamics) is one of the effective numerical simulation methods in hydrodynamic studies.
In recent years, CFD is increasingly used in mechanical design and fluid flow analysis, and become an important design and calculation method.
In this paper, the design method of diagonal flow fans is investigated by CFD, and the characteristics of flow field of the diagonal flow fan is summarized based on the results of numerical simulation, to improve the diagonal flow fan’s flow field and guide the optimal design.
Simulation Setup Outer diameter of the diagonal flow fan is 300mm.
In the a-type fan models, the angle of inlet guide blade are set to 15° and 28°.According to the simulation results, the diffuser and the fan performance curves can be drawn as Fig.6 and Fig.7.

Study of Microminiature Autonomous Underwater Vehicle Hull Form Based on CFD Technique Hailong Shen1, a, Mo Du2, b and Yumin Su3, c 1,2,3 National Key Laboratory of Science and Technology on Autonomous Underwater Vehicle, Harbin Engineering University, Harbin 150001, China ashenhailong@hrbeu.edu.cn, bdumosuper@163.com, csuyumin@hrbeu.edu.cn Key words: CFD; AUV; turbulence model; mesh; resistance coefficient Abstract: Based on CFD technique, this paper discusses the applicability of different turbulence models and mesh partition method which are used to predict the hydrodynamic performance of AUV.
Application CFD to compare submarine hull forms [J].
Proceedings of the 2007 IEEE Intelligent Vehicles Symposium Istanbul, Turkey, June 13-15, 2007:938-943 [6] SHEN Hai-long,SU Yu-min, Mesh partition methods for numerical simulation of the flow fields of full form ships[J].Journal of Harbin Engineering University,Vol.29 No.11,Nov.2008:1190-1198 [7] ZHANG Nan, Nan, SHEN Hong-cui, YAO Hui-zhi.
Validation of numerical simulation on resistance and flow field of submarine and numerical optimization of submarine hull form[J].Journal of Ship Mechanic, Vol.9, No.1, Feb., 2005:1-13 [8] PAN Zi-ying et al.
Research of CFD application in engineering estimation of submarine maneuverability hydrodynamic forces [J].

Numerical simulation using Computational Fluid Dynamics (CFD) is considered to be a useful tool for developing reliable pressurized mixing fluid profile correlations and providing good understanding in the fluid flow mechanisms in particular reaction time and geometry of the mixer.
Details of the CFD simulation CFD model of the mixer.
The results from CFD analysis will show the more preferable pressure for significant geometry condition of the mixing zone.
In this investigation, all the significant operating condition and process arrangement applied to the 2-D CFD model for the mixer.
The current study is expected to provide the general idea of CFD application for nano-particle production at mixing stage.