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Numerical Simulation Numerical modeling and mesh.
The whole model is meshed in ICEM CFD.
Simulation results on Section A.
After calculation, results can be viewed in CFD-Post, which is designed to allow easy visualization and quantitative analysis of the results of CFD simulations.
Simulations have several advantages.

CFD: Computational Fluid Dynamics.
DES: Detached Eddy Simulation.
They examined classical BEM theory and the modified BEM as well as CFD and the BEM-CFD mixed method.
RANS simulations of transitional flow by γ model.
Introduction of a modified segregated numerical approach for efficient simulation of γ-Reθt transition model.

The CFD model of single heliostat under typical operating situation was founded by technology of numerical simulation based on standard k-ε model.
With the numerical simulation applied, this paper established heliostat’s CFD model under typical operating modes, obtained the mean wind pressure on heliostat set and the corresponding wind coefficients.
To realize numerical wind tunnel by CFD technique, the first thing is to establish the computation model which should be set large enough so as to avoid the boundary’s oversized influence on the flowing result.
The simulation assumes the air current an incondensable steady flow.
Numerical simulation can effectively simulate flow field around heliostat.

Thus, numerical simulation tools are gaining wider acceptance as they become more sophisticated in their predictive capability as well as offering a route to significantly lower developmental costs [1-3].
This paper uses CFD software- FLUENT to execute numerical calculation of wind pressure under the above two load cases.
Implementation The numerical simulation of CFD technique is selected as an appropriate method according to the actual aerodynamics characteristics and design experience of the blade.
This paper uses the CFD software FLUENT to simulate the air force on the above two kinds of working conditions of the blade by numerical simulation.
After the simulation by using the software MATLAB, the functional relations are as follows: when: (1) In Eq. 1 ， .

Design optimization of a chip-size microchannel heat sink for high power devices Junhong Zhao1,a, Zhijuan Wang2,b, Guifu Ding3,c, Guilian Wang4,d, Yan Wang5,e 1,2,3,4,5National Key Laboratory of Science and Technology on Nano/Micro Fabrication, Shanghai Jiao Tong University, Shanghai 200240, People’s Republic of China aecholovely@sjtu.edu.cn, bbmxwzj@sjtu.edu.cn, cgfding@sjtu.edu.cn, dwglshk@sjtu.edu.cn, ewyyw@sjtu.edu.cn Keywords: chip-size; microchannel heat sink; inlet position; CFD; microchannel distribution Abstract.
With the aid of a computational fluid dynamics (CFD) method, the temperature distribution of microchannel heat sink under steady-state conditions is examined and the microchannel distribution is optimized, forming an optimal design for the chip-size microchannel heat sink.
The schematic (A) and a side view (B) of microchannel heat sink Based on the KDG120N30 model IGBT of Keda Semiconductor Co., Ltd., a simulation method is used to verify the rationality.
"Numerical simulation of water-cooled plate radiator performance for IGBT. " DIesel Locomotives 5 (2012): 1-4
"Design optimization of an integrated liquid-cooled IGBT power module using CFD technique." 

Modeling and simulation play an important role to reduce these times effectively.
CFD has been successfully used for simulation of various manufacturing processes such as casting and refining [2-6] and spray forming processes [7].
Simulation can estimate the amount of ram force necessary for the extrusion operation.
Simulation model can evaluate different possible options to narrow down the experimental trials.
Thomas in Fourth International Conference on CFD in the Oil and Gas, Metallurgical & Process Industries SINTEF / NTNU Trondheim, Norway, 6-8 June 2005 [7] Spray Simulation by Udo Fritsching, Cambridge University Press, 2004 [8] S.P.

CFD Theory and Computer Code Process The basic idea of CFD is to substitute a set of variable values on finite discrete nodes for the physical variable field which was continuous on space and time, and then solve a set of algebraic equations that established the relationship of discreted variable values to get an approximation of physical variable field.
Method that solves the governing equations directly called Direct Numerical Simulation (DNS).
Reynolds Average Numerical Simulation (RANS) and Large Eddy Simulation (LES) could use lower grid resolution.
Take a one-dimensional simulation in Cartesian coordinates for example (, , when i=1).
But the pressure maximum and minimum are higher using numerical simulation than field data.

The reliability of the simulation programme is validated by comparing numerical simulation result with engine test data.
So, in recent years, no numerical simulations have been conducted for the multicomponent propellant.
Then a new numerical simulation programme, based on CFD methodology, aimed to the rocket engine using the multicomponent propellant in the absence of metal, is developed with exiting flow and combustion theory and models for liquid rocket engine.
Numerical Simulation Produces The simulation model includes prediction of a coupled two-phase flow.
Although it is not an unerring precision, this is acceptable as CFD solvers are not yet fully capable of accounting for every dynamic variable affecting a fluid flow.

These systems are designed by fire protection engineers using design guides and computer modeling techniques such as Computational Fluid Dynamics (CFD) that have become more accepted among Fire Protection Engineers.
FDS (Fire Scenario)- CFD techniques have been used in engineering analysis of the ventilation system in the fire scenario for many years.
FDS is a powerful CFD model of fire driven fluid flow developed by NIST, which has been applied widely in solving practical fire problems in fire protection engineering.
Ø Fire is Generated in 8th ROW, Middle Column , 9th Seat Parameters of Solver Ø The simulation type applied Large Eddy Simulation (LES) Model.
The Simulation programme’s likes Energy Plus, COMFEMN, CONTAM, FDS, EXIT89, Radiance, ANSYS, ODEAN BEES and other simulation tools should be used right from Initial stage to save Life, Property, Energy in an Environmentally and Financially Viable way.

The CFD model is then validated by the analytical solution of the slider bearing problem.
(2) As no analytic solution exits for the geometry of the machine hammer peened surface structure, a numerical simulation based on CFD is set up.
Figure 2: Illustration of the slider bearing geometry (a) and validation of the CFD model (b).
As it can be observed, the CFD model corresponds very well to the analytic solution.
The setup of the CFD model is, therefore, considered valid.