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The solidification model is vital to the simulation of casting process with mushy zoned involved.
The model has been realized on the commercial CFD package, in which the solid and liquid of metal are united in one frame.
The macro modeling for solidification is vital to the precise simulation of casting process.
However, the new features in CFD (Computational Fluid Dynamics) and FEA (Finite Element Analysis) technologies may not be involved, which has been maturing progressively and would improve the casting simulation.
The velocity is pretty small, however the flow pattern can be observed clearly because of the high accuracy of CFD solver.

For numerical investigation, commercially available computational fluid dynamic CFD software GAMBIT and FLUENT were used.
A sliding mesh technique was implemented in the CFD code.
This enabled a geometrically exact simulation of the rotor motion with time.
Simulations were performed in a way that allowed comparison with wind tunnel data, where two designs were simulated.
Present Simulation The main goal of this current research is to current numerical simulation of the newly designed cavity type vertical axis wind turbine to investigate its aerodynamic performance.

Together with experimental test, the CFD simulation is completed basing on a 3D model of the PWS rotor channel.
Both the experiment and CFD simulation aim to analyze the influence of PWS on the diesel engine exhaust emissions.
CFD Simulation Pressure-wave supercharger is designed to directly transfer energy of the exhaust gas to the fresh charge.
In this simulation case, the CFD solution is iterated from A1 to A7.
CFD Simulation Results The CFD simulation results of the flow inside the rotor channel are seen in Figure 5.

CFD Study of Wake Interaction of Two Wind Turbines Zixi Chen1, a, Neha Marathe1,b and Siva Parameswaran1,c 1Department of Mechanical Engineering, Texas Tech University, Lubbock, Texas, 79415, USA azixi.chen@ttu.edu, bneha.marathe@ttu.edu, csiva.parameswaran@ttu.edu Keywords: wind energy, wind turbine, wake interaction, CFD, virtual blade model.
Computational Fluid Dynamics (CFD) simulations are carried out to represent the velocity deficit behind two turbines in-line with the wind using the Virtual Blade Model (VBM).
VBM is an implementation of the Blade Element Method (BEM) within the commercial CFD code ANSYS FLUENT.
Results In the following, results obtained from simulations using VBM are presented.
Basically the simulation result is in good agreement with the wind tunnel data.

CFD model of the IGBTs’ air-cooled heat sink.
Simulations were run using different geometry parameters to find the best-performing structure in terms of heat transfer coefficient.
In each simulation, the ambient air temperature is 35 .
Figure2 shows the mesh of the whole CFD model.
According CFD compute result, the detail of fluid information will be revealed.

Simulation of A Mono Cylindrical Engine With LES Software GHERGHINA George1, a *, POPA Dragos Laurentiu1,b and TUTUNEA Dragos1,c 1The University of Craiova, Faculty of Mechanics, CALEA Bucuresti, no.107, Craiova, Romania agherghinag@yahoo.com, bpopadragoslaurentiu@yahoo.com, c dragostutunea@yahoo.com Keywords: 1D simulation, mono cylindrical, automotive industry, CFD tools, LES software.
Since CFD modeling of the whole engine is not feasible 1D codes are frequently used to optimize complex boosting systems for improved engine performance.
Computational Fluid Dynamics (CFD) simulations used in automotive industry allow engineers to understand flow behavior and quantify important flow parameters such as pressure drops or mass flow rates, with the condition that CFD tools have been properly validated against experimental data.
Duleba, Simulation of automotive engine in lotus simulation tools, Transfer inovácií 30/2014, pp. 48-52
Renberg, 1D engine simulation of a turbocharged SI engine with CFD computation on components, Licentiate Thesis, Stockholm, 2008

The results show that the biggest deviation of simulation on discharge coefficient linearity and relative pressure loss are less than 0.4% and 1.2%, the results simulated by CFD are in good agreement with that by experiment.
So computational fluid dynamics (CFD) numerical simulation tests based on orthogonal experiments and actual flow experiments are carried out in this research.
Comparisons between Simulations and Actual flow experiment The data comparison between actual flow experiment and CFD simulation are shown in Table 5.
The relative error is calculated by the equation (7)and (8) (7) (8) Where Eδ stands for the relative error calculated between the actual flow experiment and the CFD simulation on discharge coefficient linearity, δCFD stands for the value of discharge coefficient linearity got by CFD simulation and δEXP stands for the value of discharge coefficient linearity got by actual flow experiment; Eξ stands for the relative error calculated between the actual flow experiment and the CFD simulation on Relative pressure loss, δCFD stands for the value of Relative pressure loss got by CFD simulation and δEXP stands for the value of relative pressure loss got by actual flow experiment.
All of these data proves that the CFD simulation predicts is correct.

Evaluation of thermal comfort in an air conditioning room using a CFD model Fuqiang Guo, Ruibin Mei a, Lei Zhang, Junwei Fan, Minxue Li and Yanli Tang Northeastern University at Qinhuangdao Branch, Northeastern University, Qinhuangdao 06600, China ameirb1999@gmail.com Keywords: air conditioning, CFD, thermal comfort, airflow Abstract.
Additionally, such as apartments [5], offices [6], classrooms [7] and museums [8] were also studied by number of scientific papers with the application of CFD models.
In the present work, CFD simulations were undertaken to assess the summer thermal environment in a typical computer room of ceiling type air-conditioner of eighteen stories building in NEUQ.
Simulation conditions.
The calculated temperature has a good agreement with the measured value and the CFD model is satisfying in the research.

In order to obtain the optimal parameters of nozzle, a new integrated method combining genetic algorithm with CFD simulation analysis is put forward in this paper.
CFD Simulation Theoretical analysis.
Fig.1 shows the simulation domain and the boundary conditions.
Then the grid was imported into the commercial CFD code Fluent.
To realize design automation by integrating CFD simulation and design optimization, four basic functions must be provided by different software packages, i.e., parametric model, geometry integrated automatic meshing, unstructured CFD solver, and optimization tools.

This work presents the study of UWS injection spray using commercial available CFD code, Fire v8.3.
The CFD model containing both evaporation of water and thermal decomposition of urea is used in the present simulation.
CFD Methodology Fluid Flow and Spray.
To evaluate the influence of variation of exhaust gas temperature, and injector mounting positions, known spray parameters are essential for CFD simulation as boundary conditions.
Simulation results are compared with experimental values obtained by Kim et al. [4] and NH3 conversion efficiency of 80~90% is observed during the simulation and is in-line with current trends.