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Analysis of CFD for Design Method of Swirl Atomizer Liang Yu1, a, Shusheng Yuan2, Zhibing Pang3, Yunliang Wang2 1 GraduatesBrigade NAEI.
RNG (Renormalization Group) k-turbulent model was applied to the numerical simulation of the flow field, and SIMPLE algorithm was used to solve the finite difference equations.
Through the analysis of pressure and velocity fields get by the numerical simulation, we found that the use of CFD method in the swirl atomizer design is beneficial for getting more detailed and accurate flow structure and advantageous to analyze the influence of different nozzle geometry, and then given a reasonable design opinion.
In this paper, the Abramovich solution and CFD solution are combined.
Bazarov, CFD Analysis of Swirl Atomizers, AIAA, 2008-5229 [2] L.

Simulation of Natural Ventilation of Workshop in Large-scale Iron and Steel Enterprises Based on CFD Yan Long1,3, a, Ke Liu2,b , Shiping Jin1, c and Yan Fu3,d 1 School of Energy and Power, Huazhong University of Science and Technology, HuiBei, Wuhan, 430074, P.R.China. 2Wuhan Metallurgical Construction Co., Ltd. of MCC Group, HuiBei, Wuhan, 430081, P.R.China 3WISDRI Engineering & Research Co., Ltd. of MCC Group, HuiBei, Wuhan, 430223, P.R.China a ly_hust@mail.hust.edu.cn, b sphinxleo@126.com, c jsping@public.wh.hb.cn, d 17052@wisdri.com Keywords: CFD, Simulation, Natural Ventilation, Large-scale Workshop.
Method of CFD was adopted to carry out two-dimensional numerical simulations for internal natural ventilation process of a standard triple-span workshop in iron and steel enterprises with3 different layouts of heat resources.
By the method of Computational Fluid Dynamics (CFD in short), this paper carries out two-dimensional numerical simulations for internal natural ventilation process of a standard triple-span workshop in iron and steel enterprises with three different layouts of heat resource, obtains flow states and relevant parameters of air-fluid in the workshop and then attempts to come up with theoretical basis for design, optimization and process layout of natural ventilation in workshops.
In ventilation design of variety of large-scale industrial workshop, CFD is a common way to simulate and comparatively evaluate design proposals and then select the optimal design of ventilation. 2.
[5] Xianting Li, Bin zhao: Numerical Simulation of Air Indoor (China Machine Press, China 2009, In Chinese).

Study on Numerical Simulation Method for Motion of Supercavitation Vehicles Jing Zhao1, a, Yong Yan Su1,b , Yan Zhao1,c ,Guo Yu Wang1,d 1 School of Mechanism and Vehicle Engineering, Beijing Institute of Technology, Beijing, China asand810125@163.com, bwosuyongyan@163.com, czhaoyan_gump0821@sina.com, dwangguoyu@bit.edu.cn Keywords: Supercavitation; Numerical Simulation; CFD; Motion Equation Abstract.
A calculation method was developed to predict motion of supercavitation vehicles based on the computational fluid dynamics (CFD) model.
This method uses CFD model to simulate cavitating flow and obtain hydrodynamic data of the vehicle.
Numerical Simulation Method for Motion of Supercavitation Vehicles Model of Supercavitating Flow.
Fig. 8 Variation of pithc angle of the vehicle Fig. 9 Variation of attack angle of the vehicle with time with time Conclusion A simulation method coupling CFD model and vehicle motion model is developed to predict motion attitude of supercavitation vehicles.

CFD Model Validation for Charging and Discharging of a PCM Encapsulated in Sphere N.
A commercialised computational fluid dynamics (CFD) software is used to simulate the TES model and the result is then compared experimentally, thus validating the simulation model.
It is also found that with the use of the CFD model, one could determine the effective thermal conductivity of the PCM at different temperatures.
The thermal performance of the plain plastic sphere containing PCM was modelled in commercialised computational fluid dynamics (CFD) software namely the Ansys CFX 12-1.
Simulation model of a PCM sphere in the TES tank works well for charging.

CFD Analysis of a Solar Parabolic Dish C.
Simulation of the structural, thermal and CFD analysis of the dish with varying metallic properties (Aluminium, Copper and Stainless Steel) under different wind conditions was compared.
The results of our CFD analysis can also be verified by experimental investigation.
CFD analysis varies for the different fluid material according to their properties.
All of the simulations done in this study shows that solar parabolic dish has promise to compete with current solar technologies.

Diffusion path.CFD.
This paper analysis gas diffusion path between two adjacent tunnels, using CFD (Ansys Fluent).
Tunnel exit section length 100m, width 80m, 50m high cubes simulation outside atmosphere.
By analyzing the simulation results, CO concentrations of upstream and downstream tunnel entrance tunnel exit were 150ppm, 55.3pmm.
After analyzing the results of numerical simulation, concentration of CO is 150ppm on tunnel exit portal, and concentration of CO is 23.6ppm on adjacent tunnel entrance. 

In this paper, numerical simulations of the two mission phases have been conducted with CFD tools.
Although RANS approaches are not generally as accurate as computational models utilizing Large Eddy Simulation (LES)[7] or Direct Numerical Simulation (DNS) techniques, the computational efficiency afforded by the RANS approach is advantageous and reasonable for the simulation of full scale scramjet.
Table 2 lists the simulation conditions for inlet of the computational zone.
On the CFD support for the Hyper-X aerodynamic database.
Reynolds-Averaged Navier-Stokes Simulations of the HyShot II Scramjet.

The main difficulty related to the flow simulation is that any CFD (Computational Fluid Dynamics) technique generates discrete systems with a very large number of states.
The focus is on descriptor type systems resulting from the spatial discretization of the CFD governing equations.
The main difficulty related to the flow simulation is that any CFD (Computational Fluid Dynamics) technique generates discrete systems with a very large number of states.
The CFD problem is formulated for the numerical simulation of a started diffuser, [5].
The CFD system used in this work is the 1-D Euler equations of gas dynamics.

CFD Simulation of Spouted Bed Working with a Size Distribution of Sand Particles: Segregation Aspects K.G.
Computational simulation using CFD method reproduced well the segregation experiments with different participle sizes of sand.
Numerical simulation by Computational Fluid Dynamics (CFD) can be used to assist the understanding of particles dynamic of many equipments, supplying information that cannot be easily obtained experimentally.
With respect to spouted beds, there are few studies in the literature involving CFD simulations of particle mixing and segregation, and that have considered more than one solid phase [7].
Conclusions The fluid dynamics of a spouted bed operating with a size distribution of sand particles was investigated using the technique of CFD simulation considering five granular phases.

On the contrary torque on the side of flow is available through CFD analysis.
CFD Analysis Of Heavy Vehicle Fan Algorithms for air circulating axial flow fans which are composed of seven blades of heavy vehicle cooling fan developed in this study are applied for CFD analysis.
Convergence of Unsteady flow simulation depends on time step size between iterations.
Fan performance is usually measured in plenum chambers, where the simulation of the unobstructed, ideal fan performance is possible.
[3]  2005, Wang, A. et al., "Evaluation of the Multiple Reference Frame(MRF) Model in a Truck Fan Simulation," SAE Technical Paper, Canada