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In order to predict the amount of flow leaking through the clearances of the tube passes, a numerical simulation was carried out using the computational Fluid Dynamics CFD Fluent Software.
Mathematical Model The mathematical model for this simulation is based on the governing equations of fluid motion, which have been applied in CFD to simulate the fluid flowing through the clearance between the tube-passes partition plate and the wall of the head of the heat exchanger.
The more relevant performance parameters in this simulation were the velocity and the flow rate, which were obtained using the CFD Fluent software.
Simulation results.
[7] NAFEMS Seminar: Numerical Simulation of Heat Transfer.

Simulation Analysis and Design of Intake Restrictor of FSAE Race Car Chuwei Chen*1, a, Wei Du2, b, Jiaqi Sun3, c, Wei Liu4, d, Yuan Chang5, e, Wei Dong6, f 1State Key Laboratory of Automotive Simulation and Control, Jilin University, 5988 Renmin Street Changchun, China achencw1511@mails.jlu.edu.cn, bduwei1511@mails.jlu.edu.cn, csunjq1511@mails.jlu.edu.cn, dliuwei1512@mails.jlu.edu.cn, echangyuan1512@mails.jlu.edu.cn Keywords: CFD analysis, intake restrictor design, nozzle design, FSAE race car Abstract.
For the intake restrictors which are designed in line with FSAE race stipulations, this paper carries out compute simulation on the convergent section and divergent section of the intake restrictors via CFD software; the paper systemically analyzes the distribution characters of its flow field, thus obtaining optimal design scheme.
According to Literature [12] and [13], Spalart-Allmaras (1eqn) turbulence model provided by CFD software FLUENT is an eddy viscosity model.
CFD Simulation Results and Analysis The relationship between the converging half angle of the intake restrictor and the nozzle flow Under the condition of keeping the divergent section (divergence half angle is 11°) and the throat of the restrictors unchanged, the converging half angle is changed, and calculation is carried out under the conditions when the converging half angle is set as 10°, 20°，30°, 40°, 45°，50° and 60° respectively.
This is similar to the phenomenon in this experiment; meanwhile, it also verifies the accuracy of this simulation.

In this paper, numerical studies have been conducted in order to evaluate the efficiency of a vertical axis wind turbine by using CFD methods.
Results indicate that the poor accuracy of the URANS CFD method is mainly due to its limitation in the vortex modeling.
Two CFD methods was use to estimate the power coefficient for this wind turbine.
A difference between these two CFD methods can be observed.
Carissimo, „Best practice guideline for the cfd simulation of flows in the urban environment“, May 2007 [14] H.

This method was developed by Ahmed [10] and his research has been used as a validation parameter for CFD simulations because it has many studies on this vehicle (Figure 6).
These actions can now be done by the team in parallel with new fluid dynamics simulations in CFD software, comparing the results and verifying the feasibility of applying the improvement.
A Review on Aerodynimcs Study of Vehicle Body using CFD.
Aerodynamic Analysis of a Computational Fluid Dynamics Simulation (CFD) Energy Efficiency Prototype.
CFD Lett. 3, 3239. (2011)

Simulation of Wind Effects Embracing a Complex Shape Super High-Rise Steel TV Tower Using CFD Yaya Tan1, a, Chunxiang Li 2,b 1 Department of Civil Engineering, Shanghai University No.149 Yanchang Rd., Shanghai 200072, P.
As decision makers are relying more and more on the simulation results of CFD, its credibility is a critical issue.
The correspondence between numerical simulation and wind-tunnel experiments was found to have a good agreement.
The second approach is Direct Numerical Simulation (DNS).
Therefore, Flow field around the tower can be simulated and studied by CFD analysis.

Unstructured mesh and standard one - equation turbulence model, and Spalart-Allmaras selected in the simulation.
The computational simulations were done to obtain the lift, and drag coefficients using Numeca software.
UAV Kenyalang-I Characteristic Geometry setup and Mesh generation CFD.
Table 1 is the data obtained from the CFD analysis.
Fig. 2: CFD mesh, Static temperature, Total pressure, skin friction &Velocity vector view.

For this reason that an experiment of hydrogen leakage has a high risk [1-4], a numerical simulation has become a very important alternative [5-9].
Therefore, numerical simulation method is feasible to hydrogen diffusion.
CFD modeling of large-scale LH2 spills in open environment[J].
Validation of CFD modelling of LH2 spread and evaporation against large-scale spill experiments[J].
FLACS CFD air quality model performance evaluation with Kit Fox, MUST, Prairie Grass, and EMU observations[J].

The result indicates that by combining the CFD numerical simulation with the analytical method the heat dissipation of the radiator group can be predicted effectively.
Taking a mining dump-truck radiator group as the object of the study, this paper analyses the heat-dissipate performance by combining the CFD numerical simulation and the analytical method.
A 3d geometric model of the radiator group is established, and CFD simulation of water side and air side are carried.
The RNG k-ε turbulent model is adopted for simulation.
Simulation results are as shown in table 2.

Taking the city Wu Han as a case, this paper introduces how to apply the CFD simulation of the digital model of metropolis to thermal environment study.
Fig.1 shows the CFD digital model of Wuhan.
Different parameters are made on the CFD model according to the grades.
In this method, the CFD digital model is set up for the simulation, which can be used to study the ventilation condition and thermal environment under atmospheric environment impacts.
As what has been indicated above, the thermal environment, tropical island effect and wet land under climatic environment influence have been analyzed by the CFD simulation.

The article presents selected results of a computer simulation of chemically active fluidized bed phenomena used in the thermo-chemical treatment of steel.
The results of CFD (Computational Fluid Dynamics) computer simulation of temperature distribution and fluidizing gas mass distribution along the walls of samples placed in the fluidized bed are presented.
CFD analysis Modeling of phenomena occurring in a fluidized bed was conducted with a Fluent software.
Results of calculations The results of computer simulation of the gas flow around the sample placed in the active fluidized bed are shown in figure 4.
Oleszczak: Determination of the parameters of the surface layer construction of steel treated in a fluidized bed in the carburizing process by CFD method, Report, 2009, p. 28 [2] T.