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The numerical analysis considers steady state condition however, the simulation model benefited with dynamic mode consideration too.
The simulation of various models with air flow and boundary parameter were designed and with concept of moving wall the thermal , air velocity pattern and graphs are obtained using CFD FLUENT simulation techniques so as to find most efficient ventilation design.
The research is further carried out to find out thermal resistive property of cavity wall and waste material fill cavity wall practically and later on by simulations using Ansys .
[9] Alexander Kayne , 2012, ‘Computational Fluid Dynamics (CFD) Modeling Of Mixed Convection Flows In Building Enclosures.’ , Dissertation Report, Washington University
[10] Aditya Peri , Piam Mario Fernandes & Chandrashekar Vishwanadha ,2011‘Numerical Simulation Of Air Flow In A General Wad Of A Hospital.’

However, it is often ignored by using a static contact angle in droplet moving studies, which may significantly reduce the accuracy of the simulation.
With this model, simulation can be done with commercial softwares such as Fluent, comsol(FEMLAB), Reorient normal vectors to the interface along the solid surface using dynamic contact angles Evaluate surface tension force using Eq.13 and electric force using Eq.11 Evaluate velocity and pressure using Eq.6, Eq.7, Eq.8 and Eq.9 Evaluate using Eq.16 Evaluate static and dynamic contact angles using Eq.10 and Eq.15 Reapply velocity B.C.
Fig.1 Algorithm to advance the solution by one time step CFD-ACE+ and CoventorWareand etc.
Bussmann, in: Height functions for applying contact angles to 2D VOF simulations.

In 2008, Wang Yang et al set up a simulation model of water-jet guided laser cutting silicon wafer, stainless steel and 65Mn, the simulation results revealed that the effect of water jet cooling on temperature field is very distinct and the silicon wafer had the least heat affected zone of all [4].
All the above several literatures treated the simulation of water–jet guided laser processing almost based on the thermal action of laser and convective heat transfer of water jet.
The parameters related to the simulation were listed in Table 1.
Parameters employed in the simulation Parameter Type Pulse energy [J] Pulse width [ms] Jet diameter [mm] Jet speed [m/s] Material type Material diameter [mm] Thickness [mm] Setting 0.1 0.5 0.13 100 Stainless steel disc 0.3 0.1 Before these operations, using computational fluid dynamic (CFD) software to get the impact curves of water jet, which included wall pressure and shear, but the forces were variable with the geometric shape of water jet and closely related to the moving erosion front between water jet and workpiece.
The simulation model was established with two-dimensional axisymmetric mode.

COMPARISON ON PERFORMANCE CFD Model and Numerical Approach In this paper, the aerodynamic performance is numerically investigated for the different types of twisted blades.
All the simulations are implemented by commercially available CFD software Numeca.
In order to improve the simulation precision, the grids are densified with the dimensionless y+ to 2 near the walls and in some domains with complex flow structure.

To evaluate the proposed method, experimental work with existing was conducted and good agreement between simulation and experimental results.
To evaluate the proposed method, experimental work with existing was conducted and good agreement between simulation and experimental results.
(a) Simulated spray velocity (b) Spray half angle captured by camera Fig. 6 Simulation and experimental results (d = 0.35mm, l = 0.26mm) Table 4.
To evaluate the proposed method, experimental work with existing was conducted and good agreement between simulation and experimental results.
[4] Yonggui Xu, Mingyan Liu, Can Tang, Three-dimensional CFD–VOF–DPM simulations of effects of low-holdup particles on single-nozzle bubbling behavior in gas–liquid–solid systems, Chemical Engineering Journal. 222 (2013) 292-306

Study on Surface Pressure Distribution Test of Stayed- Cable Using Aerodynamic Measure Gong Sai1,a, Tang Peng1,b, Wang Chengkun2,c 1Nanyang Institute of Technology Nanyang, 473004 China 1Highway school, Chang’an University Xi’an, 710064 China a381543326@qq.com, b78663624@qq.com, c278413106@qq.com Key words: Cable-stayed; rain-wind-induced vibration; aerodynamic measure; wind pressure coefficient; aerodynamic coefficient; CFD numerical simulation Abstract: Stayed-cable was being considered as an important component of cable-stayed bridge, with characteristics of its low quality, stiffness and damping, among which rain-wind-induced vibration brings the most serious damage in its high amplitude because of its easy conditions to meet.
Fig. 3 Cable model with spiral line and waterline Fig. 4 Model installation diagram （5）The experimental analysis on the effect of the end plate simulation Under different wind speed, the distribution coefficient of average wind pressure in different sections that distance from the free end of cable-stayed have the same regular pattern, the paper lists only test data processing under 30 ° wind angle, shown in Fig. 5.

Simulation Results and Discussions The Development of CI Engine Model.
Simulation Results.
Comparison of Simulation Results for Different Equivalence Ratios.
The simulation results show good agreement between with the measured data.
Oztop, Mujdat Firat, Ahmet Koca, CFD modeling of heat transfer and fluid flow inside a pent-roof type combustion, International Communications in Heat and Mass Transfer. (2010)

A multi-propose commercial CFD software, FLUENT 6.3, has been employed in solving the governing equations for continuity, momentum, and energy for the numerical simulations of flow and temperature fields.
All the simulations used the structured computational mesh and the total number of cells is approximately 21,000.
The advection of moving fiber is included in the present simulations and the temperature of glass fiber is also the part of numerical solutions.
This flow pattern is in fact similar to the results by Yoo and Jaluria [10] in their isothermal flow simulations which used constant resin viscosity and did not include any thermal effects.
Jaluria, “Simulation of the flow in a coating applicator for optical fiber manufacture,” Comput.

Numerical Simulation Theory of Aerodynamic Noise S-A Model.
Large Eddy Simulation (LES).
LES method is a kind of turbulence numerical simulation between direct numerical simulation Reynolds averaging (RANS).
LES is become one of the main methods in the field of CFD at present, because LES make a compromise in accuracy and efficiency between the two methods above.
Large Eddy Simulation method is mainly used for complex numerical simulation of turbulence and for noise analysis widely.

Structure Optimization and Numerical Verification of Plenum Chamber for Relaxation Heat Setting Machine Shuquan Song1, 2, a , Youhua Ge 1, b and Haitao Zhao1, c 1College of Mechanical Engineering, Yancheng Institute of Technology, Yancheng 224051, China 2College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing, 210016, China asq_song@126.com, bcngeyh@126.com, czhaotaohai@sina.com  Keywords: structure optimization, flow distribution, numerical simulation, opening ratio.
Based on experiments, Zhang et al suggest that the air flux which flowing through orifice plate is closely related to opening ratio, unreasonable opening ratio will lead to uneven airflow distribution upon the fiber [2].Zhang et al study the impingement freezer with different opening ratio by numerical simulation method, and think 5% is the optimum rate [3].
Table 1 Structure parameters of the plenum chamber Opening ratio β(%) 10 Working width of machine Wg (m) 1.2 Maximum width of machine Wmax (m) 2.0 Height of air inlet Hin (m) 0.2 Minimum aspect ratio of plenum chamber imin 3 Length of setting machine LD (m) 2.0 Table2 Results of optimization design β1 (%) β2 (%) β3 (%) β4 (%) β5 (%) W (m) H (m) 16.5 10.2 8.4 7.7 7.3 1.727 0.386 Numerical Validations of Optimization Results The simulation of the flow field is conducted with the commercial CFD code FLUENT, which applies a finite-volume method for the solution of conservation equations for mass, momentum and energy of a continuous fluid.
The numerical simulation results indicate that reduce opening ratio along the width and select optimization dimension is an effective method, it can results in the relative velocity error rate decrease by 23.7%.
China Synthetic Fiber Industry.Vol.33 (2010), p.55 [3] Z.Zhang, J.XIE: Numerical Simulation on flow and temperature Fields in quick freezer with perforated plates.