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Numerical simulation method is used to predict the curve in diagnosis model.
FEM method and CFD method is used to determined the curve in the modeling.
It indicates that their obvious simulation error under linear elastic model.
Fig. 5 shows simulation and experimental result of load-displacement curve.
Numerical simulation method is used to predict the curve in diagnosis model.

The research of the flow simulation in the inner stirring tank with the single pipe and dual pipe was studied by CFD, which has demonstrated the fluid simulation effect of the single pipe and dual pipe.
Basing on this result, the flow simulation effect of dual pipe is better than the single one, and the result has a certain practical significance effect on industry.
With the computational fluid dynamics (CFD) is developing rapidly, the numerical analysis method has became one of the important methods of research in chemical equipment industry.
The numerical simulation Simulation process uses control volume method, and use Rhie - Chow algorithm to avoid shaking.
Through the simulation we can see that the given initial conditions are suitable for gas-liquid mixing characteristics, and the convergence residual < 10-4.

Numerical Simulation of Radon Atmospheric Dynamic Diffusion from a Flat ground Uranium Tailings Impoundment Xiaoyong Peng1, a, Xin Zhang2, b, Shuai Huang3, c, Xusheng Chai4, d, and Lanxia Guo5, e University Of South China, Hengyang, Hunan, 421001, China apengxiaoyong@126.com, bzhangxin646218@163.com, chs2039@163.com, dchaixusheng@yeah.net, eguo_lanxia@163.com Keywords: Uranium Tailings Impoundment, Radon, Atmospheric Diffusion, Numerical Simulation Abstract: with a flat ground uranium tailings impoundment as the object of the paper, CFD technology was used to study the atmospheric dynamic diffusion characteristics and the evolution of time and space distribution of radon in the uranium tailings impoundment.
The numerical simulations about radon atmospheric diffusion in uranium tailings impoundment were almost the steady-state diffusion process at present, the literature[3, 4] studied a flat ground uranium tailings radon atmospheric diffusion and environmental effect and different heights of uranium tailings radon atmospheric diffusion and concentration distribution law by numerical simulation method; porous media model and CFD technology were used to analyze the effect of vegetation cover in uranium tailings beach surface on radon atmospheric diffusion in the literature[5].
Numerical Simulation Results and Analysis of Radon Atmospheric Dynamic Diffusion Process Times and Space Evolution Process of Radon Atmospheric Diffusion.
Numerical simulation of atmospheric diffusion of radon emitted from ground uranium tailings impoundment and environmental effects.
Numerical Simulation of Influence of Vegetation on Atmospheric Diffusion of Radon Emanating from Uranium Tailings Impoundment.

This thesis uses CFD software Fluent and based on the VOF method to simulate the liquid film flow on inclined flat and corrugated wall.
The simulation is based on two-dimensional unsteady Navier-Stokes equation and the VOF interface tracking technique.
Liquid Flow on Structured Packing CFD Simulation and Experimental Study.
CFD Simulations of the Local-Flow and Mass-Transfer in the Structured Packing:Tianjin: Tianjin University. (2004) [10] SUN Feng-dan.
Numerical simulation on liquid flow characteristics of the wavy plate:Modern Chemical Industry, Vol. 32(1) (2012), p. 90 [11] PAK Myong-il, HU Guo-hui.

The simulation analysis results were tested on a real machine for validation in order to identify the reliability of the simulation.
This study adopted 3D CFD software, and combined the finite volume method, SIMPLE algorithm, and first order upwind difference method for numerical analysis.
Thus, the 180943 mesh was used for this simulation in order to maintain the accuracy and reduce simulation time.
The CFD simulation analysis and the prediction analysis results of the atomization flow field were used for comparison and validation through actual tests, so as to build a reliable computer simulation analysis model for the ultrasonic atomization spray coating process.
E., “REFLEQS-2D: A Computer Program for Turbulent Flows With and Without Chemical Reaction, Volume 2: Validation Manual,” GR-88-4, CFD Research Corporation, Huntsville, AL (1989)

A Computational Fluid Dynamics (CFD) modeling software (ANSYS Fluent) was applied for this purpose, which is an important and widely used tool for predicting complex flows [28-30].
Ineichen, Sidewall Effects in Flow Over a Backward Facing Step: Experiments and Numerical Simulations, Phys.
Nagano, Investigation of Turbulent Boundary Layer Over Forward-Facing Step via Direct Numerical Simulation, Int.
Wang, Direct Numerical Simulation of Turbulent Flow Through a Ribbed Square Duct, J.
Reeve, Numerical Simulation of Overflow at Vertical Weirs Using a Hybrid Level Set/VOF Method, Adv.

Fouling resistance distribution along the membrane surface was obtained from the simulation.
During the past decades, CFD method has been extensively conducted to understand the mass transfer phenomenon in membrane fouling.
Madaeni et al.[6] used CFD simulations to investigate the local permeate and pressure distribution, as well as the influence of shear rate on membrane fouling in Micro-filtration.
One specific CFD simulation model was developed to couple the hydrodynamic and mass transfer governing equations.
Boundary condition and mesh in simulation Fig.1.

Numerical simulation has been widely used in analysis of impeller design and flow field.
In most cases, the application of CFD technology in the design of the hydraulic model can effectively reflect the distribution of the field of the centrifugal pump.
Numerical Simulation of Flow Field Inside of Centrifugal Pump Based on Dynamics Mesh.
Numerical simulation of unsteady flow in a multistage centrifugal pump using sliding mesh technique.
Numerical simulation of the stalled flow within a vaned centrifugal pump.

Numerical Simulation on Axial Flow Fan Performance with Changing Tip Clearance Zhou Ye1, a, Haiyang Zhao1, b, Lu Zhang1, Chun Li1 and Wei Gao1 1School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 20093, P.R.China aye-pei-yu@163.com, bstream2608@qq.com Keywords: axial flow fan; numerical simulation; tip clearance.
In recent years, with the development of computer technology and CFD technology, the 3-D viscous flow computation technology becomes mature, can be relatively accurate to solve the 3-D viscous flow field of the fluid machinery.
Wensheng Ma, Chunwei Gu analyzed certain stages of a multistage axial compressor by CFD numerical simulation, and revealed the characteristics of clearance loss, and the simulation results have a good agreement with designed stage-between parameters [4].
By changing the blade tip clearance of an axial flow fan, numerical simulations were carried out respectively under the same condition.
Numerical Simulations Calculation Method.

Numerical simulation such as fluid dynamics and structural analyses is preferred to resolve nuclear safety issues instead of expensive and complicated experiments.
Combined CFD & Structural Analysis Overview.
CFD Analysis.
In order to minimize the disturbances in the flow, a sufficient area was considered before and after the CFD model.
The distributions of internal pressure obtained from CFD analyses are applied to the input conditions of following structural analyses.