Search results

We compare our simulation results with other reported experimental and computational results.
Introduction Computing fluid flow in a complex time-varying geometry is classically a difficult problem in the field of computational fluid dynamics (CFD).
Flow past a circular cylinder problem is a classic test problem in CFD.
The simulation is run for more than time units ensure it is a steady solution.

Study on Vehicle Emissions Dispersion in Asymmetrical Street Canyons and Proper Location of Air Intake for Ventilation System GUOHUA Gao1, a, JING Liu1,b, FEI Ma1,c ,WEIDONG Luo1,d 1 School of Mechanical Engineering, University of Science & Technology Beijing, Beijing, China agaoguohua2011@163.com, bliujing_ustb@163.com, cyeke@ustb.edu.cn, dluowd@ustb.edu.cn Keywords: CFD, Street canyon, Traffic pollutants, air inlets Abstract.
Numerical Simulations Model Description.
In the simulation, street canyons’ lengths are assumed to be greater larger than their width.
The simulation results shows that personal exposure of people are lower in the street canyon Ⅳ than other street types studied in this paper.

By the steady state numerical simulation method, the aerodynamic characteristics of external flow field of Ahmed body in crosswind was investigated.
Method of XFlow The MSC software XFlow is a kind of new CFD software based on the Lattice Boltzmann equation.
Numerical Simulation The model selection.
Because difficulties in the aerodynamic characteristics simulation of the real vehicle exist, e.g. complex model, numerous grids, and long time of computation, etc.
The steady state numerical simulation was chosen, and the speed was defined constant.

The Comparison of CFD Flow Field between Slope Solar Energy Power Plant and Traditional Solar Chimney Power Generating Equipment Qingling Lia, Xiaoqing Xieb, Jun Chaoc, Xuan Xind and Yan Zhoue Shandong Provincial Key Laboratory of Polymer Material Advanced Manufacturing Technology, Qingdao University of Science &Technology.
We take the steady state to do numerical simulation.
The simulation result of temperature field Fig 6.
The simulation result of temperature field Fig 8.
The simulation results can be used to verify the theory analysis and calculation.

From frosen image-based bioflow simulations to integrative modeling of living interfaces Muhetaer Kelimu†,‡, Marc Thiriet† † INRIA-UPMC-CNRS team REO, LJLL, UMR CNRS 7598, Universit´e Pierre et Marie Curie (Paris VI University), F-75252 Paris cedex 05 and INRIA, BP 105, F-78153 Le Chesnay Cedex, France ‡ Mechanical Engineering, Xinjiang University, 21 Youhao Road, Urumqi, 830008 Xinjiang, China kmuhetar@xju.edu.cn, Marc.Thiriet@inria.fr Keywords: image-based simulation, mechanotransduction, multiscale modeling, Navier-Stokes equation.
Many research group have developed softwares to carry out simulations of flows in physiological conduits.
Simulations needs verification and validation.
Any integration platform is important for simulation of living systems, coupling the set of equations which describe both associated physical and chemical processes to the Navier-Stokes equations.
References [1] de Rochefort L, Vial L, Fodil R, Maˆıtre X, Louis B, Isabey D, Caillibotte G, Thiriet M, Bittoun J, Durand E, Sbirlea-Apiou G (2007) In vitro validation of CFD simulation in human proximal airways reconstructed from medical images with hyperpolarized helium-3 MRI phase contrast velocimetry, J.

The influence of the flight aerodynamic for interactions of wings and body of the honeybee ZHAO Hong-yan1,a, ZHANG Peng-fei1,b, MA Yun1,c 1Beijing Institute of Technology, Beijing 100081,China a272159211@qq.com, bzhangpf0719@163.com, cmayun_1633@163.com Keywords:wing, aerodynamics, vortices, numerical simulation.
The aerodynamic and vortices were simulated by the CFD software of Fluent.The leading-edge vortex generatedin the translation phase, and delayed stall mechanism had an important effect on the high lift.

The final part of this research is the measurement of its thermal resistance under the normal atmospheric temperature and comparison with the data from the numerical simulation is made.
Using the CFD software, the whole heat dissipation efficiency of the water-cooling micro-channel heat sink can be predicted, and the thermal and mechanical behavior of the heat sink can be easily understood.
Fig 12 shows the relation between thermal resistance and flow rate under different heat generation, which are the numerical results of the heat sink using the CFD software, and displayed from the figure which are the same value of the thermal resistance under different heat generation.
The effect of the thermal resistance between the heat source and the heat sink is neglected in numerical simulation in this study, and it is the main reason why it causes the difference of experiment data from that of numerical simulation.

Research on the Separation Performance of Deoiling Hydrocyclones Jun Wang1 1Jiangsu University of Science and Technology, Institute of Energy and Power Engineering, Zhenjiang, Jiangsu 212003 China Keywords: FLUENT; Oil Water Separation; Deoiling Hydrocyclone; Numerical Simulation; Abstract: This paper uses FLUENT as the researching tools of 3D numerical simulation of deoiling hydrocyclones, analysis on the geometric structure of deoiling Hydrocyclone, summed up a set of grid partition method based on the basic theory and turbulence simulation of CFD theory, to determine a reasonable mathematical model, boundary conditions, convection diffusion the discrete format and pressure velocity coupling algorithm.
From the simulation results of the fourth chapter, the greater the flow, swirler cut more to speed, the centrifugal acceleration will increase, and the separating efficiency is increased.
Numerical simulation on flow field of Hydrocyclone. thermal science and technology, 2005, 4 (2):164-168 [2] Liang Zheng, Ren Liancheng, Zhang Liang et al.
Turbulence models on the numerical simulation of the flow field of hydrocyclone selection. natural gas industry, 2007, 27 (3):119-121 [4] Zhao Lixin, Cui Fuyi, Jiang Minghu.
Numerical simulation of turbulent flow in a hydrocyclone.

Condensation on the collection area can be estimated based on numerical Hear-air and moisture simulation.
Approaching wind flow were measured with meteorological mast positioned west of the site (distance according to the CFD simulation 3H).
Additional were also recorded the wind direction, wind elevation, air temperature and the horizontal rainfall intensity in order to provide representative validation of numerical simulations.
KUBILAY et al.: CFD Simulation and Validation of Wind-driven Rain on a Building Facade with an Eulerian Multiphase Model.

What’s more, mining intensity of fully mechanized caving is high at present and exceeding gas in air return corner is more general and serious, it is one of the great hidden dangers for safety production in coal mines [2].Simulating the distribution and motion law in air return corner by computer has been an important study and application direction to safety mining technology of coal mine, scholars at home and abroad are applying research means combining theoretical analysis with digital calculation modelling by computational fluid dynamics (CFD) to solve problems at present [3].
Balusu from Australia and Nakayama from Japan did study on simulating the flow field of working face by CFD [4,5].
Numerical simulation study on ventilation flow field of wall-attached jet in heading face [J].
The use of CFD modelling as a tool for solving mining health and safety[C].