Search results

Using the FLUENT 6.3 CFD software，the RNG k-ε turbulence model and SI MPLE algorithm，the sewage treatment pool where a submersible mixer with two leaves was numerically simulated by describing the surface as wall，VOF model and rigid-lid assumption respectively.
The distribution graph of the three numerical simulation velocity is basically the same.
From the three numerical simulation, when z=-0.0375m, the velocity is accordant, shown as double hump shape.
Numerical Simulation of Three Dimensional Flow andIts Application in Hydraulic Engineering[D].
Numerical simulation of submersible mixer with three blades[J].

Application of Computational Fluid Dynamics for Study of the Occurrence of Aerodynamic Effect for its Application in the Construction of Electric Race Car GRABOWSKI Łukasz a, BAIER Andrzej b, BUCHACZ Andrzej c, MAJZNER Michał d and SOBEK Michał e Silesian University of Technology, Gliwice, Poland, The Faculty Of Mechanical Engineering, Institute Of Engineering Processes Automation and Integrated Manufacturing Systems Konarskiego 18A, 44-100 Gliwice, Poland alukasz.grabowski@polsl.pl, bandrzej.baier@polsl.pl, candrzej.buchacz@polsl.pl, dmichal.majzner@polsl.pl, emichal.sobek@polsl.pl Keywords: aerodynamics, CAD, CAE, FEM, CFD, electric car, Kammback, race car, greenpower, realize shape, freeform modeling.
For study of aerodynamics, Ansys Fluent CFD software were used, using the license of Department of Theoretical and Applied Mechanics, located at the Faculty of Mechanical Engineering in Silesian University of Technology.
FEM mesh around analyzed shape with influence zone For analysis CFD method using Finite Element Method were used.
Baier, Virtual Simulation of Mechatronics Laboratory, Solid State Phenomena. 147-149 (2009) 930-935

Simulation and analysis of steady and 2D flow field by using ANSYS8.0 and getting the press and velocity contour. omulate the leakage. then through comparison and analysis offering theory evidence for controlling leakage effectively.
Therefore domestic and foreign scholars have done a lot of work in this: literature[1] uses the CFD software to built the numerical simulation on one dimensional flow; literature[3] proposed the dynamic characteristics expression and the calculation method of the element method; literature[4] use of fluid software to built the numerical simulation on fluid flow field and temperature field for mechanical seal cavity.
Numerical Simulation of Flow in Convergent Wedgelike Gap.Lubrication Engineering, 2004.3(163):47-49( In Chinese)

Schematics of single bubble confined growth Numerical Simulation Modeling Construction.
Since there is no a flow boiling model embedded in CFD software, a program based on C-language was constructed to realize effective control on the interphase mass transfer and physical parameters of temperature dependent variation, and so on which involve in the boiling process.
We can see, the simulation data and experimental data are in good agreement for both thin channels (S=0.5mm and S=2mm).
Numerical simulation of growth of a vapor bubble during flow boiling of water in a microchannel[J].
Confined bubble growth during flow boiling in a mini-/micro-channel of rectangular cross-section part II: Approximate 3-D numerical simulation[J], International Journal of Thermal Science, 2011, 50(3):267-273.

Review of Stratified Charge Research in Oxygen-enriched and Nitrogen-enriched Combustion Deyuan Su1, 2, Ying-ai Jin1, 2, Qing Gao*1, 2, Xianda Che2 , Yunlong Xing2 1State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China 2College of Automotive Engineering, Jilin University, Changchun 130022, China Corresponding Author: Qing Gao E-mail: gaoqing@jlu.edu.cn Keywords: Internal combustion engine, Stratified intake, Oxygen-enriched combustion, Nitrogen-enriched combustion Abstract: This paper discusses combustion and emissions of internal combustion engine when oxygen-enriched combustion air and nitrogen-enriched combustion air are used.
At the same year, Tianjin University start a research of a fully coupled multi-dimensional CFD and reduced chemical kinetics model is adopted to investigate the effects of charge stratification on HCCI combustion and emissions, and they found that the charge stratification results in stratification of the in-cylinder temperature[10].
At next two years a special combustion chamber was designed and used to a CFD simulation to analysis the fuel concentration distribution in the chamber under different crank angle time[11].
Numerical Simulation and Experimental Investigation of Stratified Scavenging System of Two-Stroke Gasoline Engine[J].Transactions of CSICE, 2003.

Research methodology The first stage of tests was the simulation of a virtual prototype of calorimetric chambers in which the method of finite volume was used.
Simulation was conducted in the Ansys Fluent environment [8, 9, 10].
The results of simulation tests enabled the optimisation of the structure of the chamber in terms of the used solutions of cooling and heating systems and air circulation.
Bezpieczeństwo i technika pożarnicza, 2012 Bezpieczeństwo i Technika Pożarnicza [8] Zbrowski A, Kozioł S., Wojnar K.: Zastosowanie metod CFD w projektowaniu przepływowej komory kalorymetrycznej symulującej zimowe warunki klimatyczne.
[9] Zbrowski A, Kozioł S., Kosowska P.: Zastosowanie metod CFD w projektowaniu przepływowej komory kalorymetrycznej symulującej warunki klimatu wewnętrznego w budynku mieszkalnym.

Design of Ocean Data Buoys Based on CFD Qiuhong Songa, Xin Tangb,Yamei Lanc and Yongcheng Liangd ShanghaiOceanUniversity,Institute of Engineering China aqhsong@shou.edu, bsinkytang@yahoo.com.cn, cymlan@shou.edu.
After comparing the theoretical values and simulation values, the need of changing is necessary.
Numerical Analysis and Simulation Software Numerical Analysis Supposing type H23 buoy as a boat whose length is 6, high is 2, weight is11.25, angle of pressure wave board and the horizontal is 30°.
In the simulation, the change of the gas-liquid interface (free surface) is a process of stabilizing.
Fluid engineering simulation calculation and analysis, Beijing Institute of Technology Press,(2009),p. 92-93.

The simulations were carried out with software FLUENT at differential pressure, different valve port openings, and then the variation of the steady hydrodynamic force can be obtained.
From the simulation results, it can be seen that the direction of the steady hydrodynamic force is opposite to the movement of the valve spool.
Conclusions In this paper, static simulation of spool valve under different conditions has been carried out, so the steady hydrodynamic force can be obtained by theoretical derivation and simulation.
[2] Lei Zhao: CFD Simulation of Hydraulic Spool Valve Internal Flow Field in Spool Movement Process.
[5] Zhanahong Han, Jing Wang: Simulation and Application in Fluid Engineering with Fluent.

The FE simulation analysis results were verified correct.
Structural crashworthiness analysis by computer simulation can effectively improve the product reliability, reduce the development cost, and enhance the market competitiveness of the product.
So in early design, the simulation work can play a greater role.
According to the simulation results, we suggest that increasing support after screen, increasing fillet in stress concentration of the plastic casing, thickening rib and other measures can greatly reduce damage of the screen and rib Fig. 8 Schematic diagram of packaging materials unit deformation Compared With Experiment Results From the above simulation analysis results, main problems of integrated machine lie in the screen and plastic frame.
Overcoming of Barrier between CAD and CFD by Modif -ied Finite Volume Method [M], Proc. 1998 ASME Pressure Vessels and Piping Division.

In this study, numerical simulation analysis was done by using the computing fluid dynamics (CFD) software, Star-CCM+.
Prior to the simulation, each model was developed and designed.
The simulation for this study uses injector nozzle which contain 8, 11 and 14 holes.
Figure 2 shows the velocity contours which was produced by each of the injector nozzle when running the simulation.
Based on these simulations, nozzle with a higher number of holes and smaller in diameter was found to be a better design.