Search results

And as the development of the CFD (Computational Fluid Dynamics) and the corresponding algorithm software, it is possible to study the microbubble generators by the method of numerical simulation.
The solution procedure of the CFD Fig. 2.
The Microcel flotation column When the method of CFD is applied in the area of the fluid calculation, the elements of the fluid flowing will be researched, such as full-field velocity, pressure distribution, etc..
With CFD, the total capacity of the fluid equipments can be forecasted, and the design issues of the equipments can be found by the analysis.
The solution procedure of the CFD can be shown in the Fig. 1.

Numerical Analysis of Hydrodynamic on Tidal Current Energy Extraction under Marine Platform Liu Jing1, a Ma Yong2, b Li Jiaxin3, c 1,2,3 Harbin Engineering University, Harbin, Heilongjiang, 150001 , China a,b,c980705492@qq.com Keywords: Tidal Current Energy, Tidal Current Energy Generator, Extraction of Hydrodynamic, Numerical Simulation Abstract.
In this paper, different numerical methods on tidal current energy extraction of near-field and far-field hydrodynamic response are used to conduct simulation study.
And the following aspects are used for simulation, including CFD model is used to establish three-dimensional numerical flume, layout plan of more tidal current energy electric generator with different spaces is designed, changes in near-field hydrodynamic are stimulated as well as the calculated results are compared and analyzed, in order to more clearly understand the influence of tidal current energy generator to the surrounding water flow, which has a certain guiding function for the optimization of tidal current energy generator group and protection for the marine environment and ecology.
Numerical Study of Hydrodynamic Response of Generator Tidal Current Energy CFD Model:Fluent is based on the finite volume method (FVM) to solve the governing equation, and it can be combined with other physical models, such as seepage model, multiphase flow model and others.
For more accurate simulation of tidal current energy extraction effect on water level, this paper uses the VOF multiphase flow model in Fluent to process free surface.

Simulation of Solid Particles in Combined Conduction, Convection and Radiation Gas Flow over a Backward-facing Step in a Duct Vahid Golkarfard, Prof.
A numerical simulation procedure for studying deposition of aerosol particles in a laminar convection flow of radiating gas over a backward-facing step including the effect of thermal force is developed.
Two dimensional Navier-Stokes and energy equations are solved using CFD techniques, while the radiating transfer equation (RTE) is solved by discrete ordinate method (DOM) for calculating radiative heat flux distribution.
The set of governing equations including the conservations of mass, momentum and energy is solved numerically by the CFD technique.
Gravity, thermophoresis, Brownian, lift and drag forces are considered in the particle simulations.

For these reasons, the numerical simulation based on the Computational Fluid Dynamics (CFD) is applied widely to investigate the flow character in the precalciner.
In the present work, CFD numerical simulations of three-dimensional turbulent flow in DD-precalciner are studied.
To simulation numerically, using Gambit software (preprocessor of Fluent software) to mesh, as shown in Fig. 3.
Boundary Conditions and Numerical Methods The boundary values in simulation are determined by the thermal data of cement plant with the capacity of the 5000t/d.
Conclusions This paper presented numerical simulation of the two-phase flow in DD precalciner based on Fluent software.

To test the benefit of natural ventilation system, this paper reviewed some analysis that had used simulation software such as CFD.
Nugroho et al (2007) supported the CFD thermal model, an acceptable airspeed is needed to get the required thermal comfort.
Therefore, to check the effectiveness of the natural ventilating system, this paper studied some analysis that had used simulation software like CFD.

Effect of groove on performance of splicing fiber in air splicer Zhenyu Wu1, a, Fangyuan Tian1,b and Xudong Hu1,c 1 Zhejiang Provincial Key Lab of Modern Textile Machinery, Zhejiang SCI-Tech University, Hang zhou, China azjuwuzhenyu@gmail.com, blaotian0329@163.com, c xdhu@zstu.edu.cn Keywords: splicing; simulation; axial velocity; pressure Abstract.
The result of simulation and experimental shows that: with the increase of inlet pressure, the rotational velocity and axial velocity of air flow also increase for the without groove case.
CFD Model Description Chamber’s Geometry.
The simulation model of chambers is established.
Air Flow in a Pneumatic Splicer by CFD.

This work aims at simulation of the mixing performance in the novel co-rotating non-twin screw group developed by the authors.
The simulation concerns the incompressible fluid obeying Carreau flow model.
To the best of our knowledge, numerical simulations about such mixing sections are still rare.
Finite element method (FEM) simulations were carried out by the commercially available CFD software Polyflow by Fluent Inc., using a mixed Galerkin formulation of the isothermal governing equations: (1) (2) Whereis the velocity vector, is the stress tensor, p is the pressure.
Time periodicity and geometry of such a group with the speed ratio equal to 2 are described in the simple way to show what goes on during operating. 2D numerical simulation of flow and mixing in such mixing section is carried out adapting the commercial CFD FEM package Polyflow.

Patton: Three-dimensional scalar microfront systems in a large-eddy simulation of vegetation canopy flow.
CFD modelling and wind tunnel validation of airflow through plant canopies using 3D canopy architecture.
Kozel: Numerical simulation of the neutrally stratified ABL flow over complex geometry.
Stathopoulos: Turbulent Schmidt numbers for CFD analysis with various types of flowfield.
Zhang: Modeling near-road air quality using a computational fluid dynamics model, CFD-VIT-RIT.

Aravind C.V. et al. [9] conducted geometry modeling and simulation analysis using the software in MATLAB/SIMULINK platform.
Yang Sun and Liang Zhang [15] utilized a model of horizontal axis wind turbine Phase VI rotor in the prediction of power coefficient using the commercial CFD FLUENT 6.2.
Korean researchers Nak Joon Choi et al. [14] performed BAWT simulation using the commercial CFD Solver ANSYS software.
N, CFD study of a Darrieus vertical axis wind turbine, Proceedings of the 2012 ASEE North Central Section Conference (2012)
[14] Nak Joon Choi, Sang Hyun Nam, Jae Sung Kim, Sang Min Lee, Kyung Chun Kim, CFD study on power output and flow characteristics of 110 kW class BAWT, paper presented at International Conference on High Performance Computing and Simulation (2011) 859-864

Numerical simulation is performed for the two-dimensional axisymmetric domain of a single cell.
The simulation results of the transient temperature fields provide useful guidance for the optimized thermal design so as to enhance the energy efficiency of the battery system.
The equations of species transport and heat transfer are solved by a commercial CFD code FLUENT based on a Finite Volume (FV) method.
The coupling of the electrochemical equations to the CFD code is implemented by loading and executing a set of User Defined Functions (UDFs).
(4) The simulation results of the temperature fields are useful for the optimized design of the thermal management system and for enhancing the battery energy efficiency.