Search results

Simulation Model on entrainment process of suction mouth under negative pressure in the medium dry sanitation trucks Physical model.
Figure2 Suction mouth CFD simulation model Mathematical model.
Simulation setting.
Because the model can maximally pick up the particle diameter of 10mm, so this paper mainly aims at simulation analysis of this kind of particle.
Simulation results According to numerical simulation, the simulation results for the flow field were obtained in Figure3~ Figure5 and the particle motion trajectory was obtained in Figure 6.

When , there are only solid area and liquid area in the phase change process. 1.3 The simulation method validation In order to validate the correctness of the simulation method, the experiments results in the thesis [11] are simulated by FLUENT6 software in this paper.
Fig.3 The physical model of paraffin （a） The simulation results （b）The experimental results Fig.4 Melting curve of paraffin at 70°C The simulation results shown in Fig.4, Comparison with experimental data, the simulation results are consistent with experimental data, except the small errors exist between the simulation results and the experimental data, because in the simulation a constant temperature boundary conditions is adopted, in the experiment the heat is transferred by natural convection from water to the paraffin, however the convection coefficient is not given，So that the numerical simulation of this paper is correct. 2 The results analysis 2.1 The Setting of calculated parameter The heat storage and discharge characteristics of three devices with different surface structures are simulated.
The simulations begin from 7 o’clock on the first day and end at 7 on the second day.
The CFD simulation of the solar chimney power plant system relying on high buildings[J].
Numerical Simulation of Solar Energy Storage Bed Filled with Phase Change Material[D].

This paper calculated the flow and air pressure data when automatic angle modulation fan in different installation angle during operation by Fluent, so as to proof the practicality and superiority of automatic angle modulation cooling fan in the engine cooling. 1-engine, 2-output shaft, 3-pump, 4- automatic angle modulation equipment, 5-force conversation equipment, 6-bellows, 7-radiator, 8-bevel gear pair, 9-control flow pipe, 10-container of expansion liquid, 11container of cooling water Fig.1 The picture of engine cooling system Modeling The simulation model was built by the automatic angle modulation cooling fan designed for the engine of the ZL50C loader.
To reflect the running situation in the different installation angle in this test, the grid model of fan was built at the installation angle of 25°, 36°, 45°, 54°, 60°, 70°, 75°severally, the method of building and meshing is the same of every model at different angle, all above work is on the tool of Turbo that was exploited for the simulation of fan.
Fig.2 Flow area meshed model of single blade Simulation Import the seven meshed models into the Fluent, the average number of elements is about 300 thousand, use the solver of segregated and implicit, absolute velocity formulation, PRESTO!
The residual convergence of simulation to the 54°installation angle is shown as fig. 3, when it running with the inlet flow is 4.45kg/s, the nephogram of blade static pressure is shown as fig. 4.
Investigation on the Connection between Angles of Setting and Efficiency within Axial-flow Fan for Subway by CFD [J].

Studies on the carbon dioxide microchannle heat exchanger of scholers all over the world mainly concentrated on the numerical simulation analysis with measurable mathematical models.
For example, Tso, Mahulikar and Brinkman [4], Weisberg [5], Liao [6] , Rao zhenghua and Liao shengming et al [7], Huang dongping and Ding guoliang et al [8], Kirkwood [9], Lu Ping and Chen Jingping et al [10], Stief [11], Peles [12], Jabardo [13], Yin and Bau [14] et al have done researches on the microchannel heat exchanger theoretically with texture parameters numerical simulation and simulation with CFD method.
Numerical simulation and performance optimization of the carbon dioxide microchannel gas cooler[J]．Chemical engineering journal, 2005, 56(9):1721-1726
Lu ping, Chen Jingping．Numerical Simulation of Flow Distribution in the Microchannel Parallel Flow Gas Cooler [J]．Applied science journal, 2007, 25(3)

VR is the newest production in the field of CAD, computer simulations and ergonomics.
Using virtual technology to design and simulation can be more vivid and powerfull than the rigid drawing, It can also maximum extent reflect the designer's ideas 2 Virtual reality technology in the application of the automobile modeling design 2.1The traditional automobile modeling design According to the traditional automotive design process, originally designed is to complete the hand-drawn renderings.
Integrated visualization, computational fluid dynamics (CFD), a series of human-computer interaction function [9].
This can save more than half of R & D costs, but also can draw more accurate and reliable data than the traditional clay model test. 4 Virtual reality technology development in the automotive industry General Motors is the world's first virtual reality technology into the design of automotive vehicle manufacturers, the earlier the design, production and assembly to achieve a virtual reality simulation.
Journal of system simulation. 2002(01) [10]WANG Le, Fang Xing.Virtual reality technology in the application of the product improved design[J].

The Overview of CFD Solution Methodologies includes finite volume method, finite element method and finite difference method.
Shao [11, 12] conducted the numerical simulation of heavy hydrostatic bearing in different speeds and analyzed the pressure with variable viscosity.
Yang [15] meshed model with mixed grid for numerical simulation.
Bhat [18] considered the coupling of oil film pressure with component deformation in the simulation of oil-film bearings.
Yes Yes No No Yes Yes Scaled model of oil film bearing Static simulation Static test Dynamic simulation Dynamic text Qualified Qualified Qualified optimization design of oli film bearing Change design Update design No No Qualified Fig. 1 Process of multi-field coupling and experimental test According to the similarity theory, designing an experimental scaled model of oil-film bearings; the assembly model of whole machine is adopted to conduct static simulation; the qualified oil-film bearing obtained by static simulation is carried on a static experiment test; the qualified oil-film bearing obtained by static experiment will be installed on the experimental model; the dynamic load based on the level of whole machine's dynamics simulation is determined; the oil-film bearing of whole machine assembly model is carried on Multi-field coupling with flow, solid and thermal field; the qualified oil-film bearing by dynamic simulation will be installed on the experimental

FLOW CHARACTERISTICS STUDY IN KITCHEN HOOD USING ANSYS Mohamad Rasidi bin Pairan1,a *, Norzelawati Binti Asmuin2,b, Z.A.Muni3,c, M.H.M.Kassim4,d, M.F.Sies5,e 1, 2, 3, 4, 5 Centre for Energy and Environmental Study (CEIES), Faculty of Mechanical and Manufacturing Engineering Universiti Tun Hussein Onn Malaysia, Parit Raja, 86400 Batu Pahat, Johor, Malaysia auncle_sid@yahoo.com.my, bNorzela@uthm.edu.my, c zaey_zack@yahoo.com, dmhasyiemcity@gmail.com, efarids@uthm.edu.my Keywords: Commercial Kitchen Hood, Flow Characteristics, Capture Jet Technology, Kitchen Space, CFD.
The turbulent model for this simulation is Re-Normalization Group (RNG) k-ε.
The RNG k-epsilon has been selected in this simulation because it suitable to study the flow characteristics in the kitchen hood and useful to analyse the interior of the region.

This verification simulation includes three cases.
Simulation Settings.
Simulation condition settings.
Simulation results.
Yu, A computational method for evaluation of added mass and damping of ship based on CFD theory, J.

Numerical simulation is launched for the droplet generation through narrow nozzle, and key factors are discussed.
Performance of ink dot jetting is evaluated and simulation results are verified.
Simulation and Analysis To solve the 2-phase flow, finite volume method is applied for the geometric modeling, grid design and numerical computation.
A piezoceramic droplet generator is presented and its impact on pressure of nozzle entrance is estimated, which has also been approved by CFD simulation.
CMOS: Circuit Design, Layout, and Simulation, Vol. 1.

Establishment of Simulation Model As a simulation software of engine performance, GT-Power could be applied to the coupled simulation of the process of the acoustics performance and air dynamic characteristics with the graphical processing program GEM3D and various noise and acoustic analysis modules.
Fig. 1 Improved design of original exhaust Fig. 2 3D acoustic mode of original exhaust muffler muffler Establishment of Engine Model, Through the 1D CFD simulation of the GT-Power software, the engine system is divided into different functional modules of object-oriented programming, and the template library is established by storing the general function modules.
Then form a simulation program related input/output parameters of practical engine by connecting these objects for organic integration.
Engine power simulation value is 7.76 kw (6000 rpm) and the actual test results for 8.02 kw (6000 rpm), the maximum torque simulation value is 13.6 N.m (4600 rpm) and the actual maximum torque testing value for 14.2 N.m (4000 rpm).
So, the power error and torque error are less than 5%, it makes this simulation model of engine working process valid for the analysis of exhaust.