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From the computational fluid dynamics (CFD) simulation of Servco fume cupboard using κ-ω turbulence model, it is found that recirculation region behind the sash is the potential contributor to the leakage of the contaminants due to its large size.
In this paper, the effect of baffle openings on flow distributions of a Servco fume cupboard will be presented as a result of computational fluid dynamics (CFD) simulation using κ-ω turbulence model.
Introduction From the computational fluid dynamics (CFD) simulation of Servco fume cupboard using κ-ω turbulence model, it is found that recirculation region behind the sash is the potential contributor to the leakage of the contaminants due to its large size [1].
In this paper, the effect of baffle openings on flow distributions of a Servco fume cupboard will be presented as a result of computational fluid dynamics (CFD) simulation using κ-ω turbulence model.
CFD Set-up.

Based on CFD technology, this paper will give a numerical prediction method of energy saving effect for compensating ducts.
Conclusions In this paper, the numerical prediction of energy saving effect of compensating ducts adopted the viscous CFD technology.
The result of viscous CFD prediction shows that the propeller thrust has increased by 4.62%.
CFD simulation of propeller and rudder performance when using additional thrust fins.
Study of mesh partition methods for numerical simulation of flow field of full form ships.

With a computational fluid dynamics (CFD) analysis, velocity profiles are calculated.
Bias Error due to Transducer Installation Position Numerical simulation has been carried out to quantify the effects of transducer installation positions on the performance of a two-plane 18-path meter with a diameter of 500mm (DN500) using a commercial CFD software.
The most important step for the simulation is meshing.
To ensure the simulation accuracy, the grid located near the transducers is much finer.
The reference curve is the same as that in Fig 3(b), which is calculated with the CFD software.

OpenFOAM is the open-source CFD software package which utilizes the finite volume method.
It can be reason of difference between the CFD results and the experimental data.
The comparison of two results of numerical simulations with the experimental data [8] is shown.
Both simulations were solved using the solver rhoSimpleFoam.
The simulation with the implemented model predicts ζ = 0.028.

Fortunately, the CFD numerical simulation is high up in the pictures not only in aircraft design aspect but in analyzing the aerodynamic force of refueling hose [2].
Using the CFD software platform Probe-Drogue equipment three-dimensional graphics and grid are drawn, and then the aerodynamic parameters which are deeded for aerial refueling modeling are gotten by numerical simulations [2].
Summary This paper describes the CFD modeling process of Probe-Drogue aerial refueling equipment, through fluid engineering simulation a series of aerodynamic parameters are obtained.
For comprehensive analysis of the refueling hose and its surrounding environment, the CFD modeling and simulation are achieved in particular airspeed, inlet of and flow angle, which provides the necessary reference for the following aerial refueling model.
[5] Zhanzhong Han, Jing Wang, Xiaoping Lan FLUENT - Examples and applications of fluid engineering simulation (second edition) [M].

Based on the computational fluid dynamics (CFD) theory and numerical simulation methods, the seal cavity flow field for the bellows mechanical seal under such the high temperature, high pressure, high-speed as complex working conditions was numerically simulated, and the temperature field, velocity field, pressure field, turbulent kinetic energy and the flow field vorticity distribution of the medium of the seal cavity were obtained, the three-dimensional fluid flow in the seal cavity, the heat transfer characteristics and the impact on the sealing performance were analyzed in this researching.
In this research, the numerical simulation was carried to the seal cavity flow field for the bellows mechanical seal by based on the computational fluid dynamics (CFD) numerical simulation theory and method [3].
Appling the CFD pre-processing software GAMBIT, the cross-section boundary line in X-Y plane was drawn and create a flat boundary with which firstly, and then a body was generated by revolving the plane around the X axis, and finally the 3-D numerical model of the seal cavity flow field was built up by boolean operators with the import, export part.
The iterated operation was applied after initializeing the flow field, the numerical simulation of the fluid flow and heat transfer for the whole seal cavity flow field were realized by terative convergence.
Hendricks: Computational studies of flow and pressure distributions in a spiral groove seals, the 9thAnnual Conference of the CFD Society of Canada, Vol. 27-29 (2001) [5] Braun M.J., Kudriavtsev V.V., Hendricks R.C: the Three Dimensional Navier-Stokes Simulation of Flow in A Passive-Adaptive Finger Seal, the 9th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, Honolulu , Hawaii, Vol.10-14(2002) [6] Zhaogao Luan, Khonsari M.M: Numerical Simulations of the Flow Field around the Rings of Mechanical Seals, Journal of Tribology, Vol.559-565(2006) [7] Braun M.J, Piercon H.M.: Thermo-fluids Consideration and the Dynamic Behavior of a Finger Seal Assembly, Tribology Transactions, Vol.531-537(2005)

CFD modeling In recent years the computer simulation of physical processes and in particular the area of Computational Fluid Dynamic (or CFD) has expanded rapidly.
CFD can be used in a variety of research fields [6].
For the simulation, the latest version of the Fluent (6.2) was used.
The simulation was hence started with the inlet pressure of 0.4 bar, at time zero and after the system had settled down to a steady state condition, the pressure was reduced (see Error!
Results and Discussion The time/pressure result from the CFD simulation is shown in Error!

Boundary Conditions for Numerical Simulation of Diesel Water Jacket Zhe Xin 1,a , Shunxi Wang 1, Kepeng Zhang 1, Zhaojing Li 1, Feng Yun 1 1 College of Engineering, China Agricultural University,17 Qinghua East Road, Beijing 100083, China axinzhecau@163.com Keywords: Diesel engines, Boundary conditions, Water jacket, Numerical simulation, CFD Abstract.
Three dimensional numerical simulation method - CFD (Computational Fluid Dynamics) has the characteristics of low design cost, short cycle etc, which is an important method to study the properties of engine water jacket[2].
According to the domestic and international water jacket CFD simulation recommended value for reference, water jacket average heat transfer coefficient should be more than 2000 W/m2·K.
Application of CFD technology on diesel engine cooling jacket simulation can obtain informations in a short time for velocity field, pressure and flow distribution, and provide a theoretical basis for improving design on cooling efficiency.
[2] Xiaoyu Liang : CFD analysis of internal flow field in Turbocharged diesel engine cooling water Jacket.

The research method uses numerical simulation by employing CFD Ansys software.
Material and Method A 2D simulation of a Savonius-Darrieus combination turbine with a deflector was conducted using Ansys CFD.
The default boundary conditions in simulation software are Inlet and Outlet.
Mereu, Savonius wind turbine CFD study: 3D model validation and parametric analysis, Renewable Energy, 105 (2017), 722-734
Ferrari, Dimensionless numbers for the assessment of mesh and timestep requirements in CFD simulations of Darrieus wind turbines, Energy, 97(2016), 246–261

Fig.1 CFD model after simplification Fig.2 Mesh model of water-washing tank Results of Simulation Fig.3 is the serial photos of water volume fraction in water-washing tank at different time.
Numerical simulation of swirling Port-Valve-Cylinder flow in diesel engines.
Development and Testing of Diesel Engine CFD Models.
CFD Modelling of the In-Cylinder Flow in Direct-Injection Diesel Engines.
Numerical Study of Combustion and Emission Characteristics of Dual-Fuel Engines Using 3D-CFD Coupled with Chemical Kinetics.