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CFD analysis of Heat transfer characteristics of Helical Coil Heat Exchangers R.
The simulation is carried out by keeping the cold water flow rate constant at 200 LPH (litre/h) and varying the hot water flow rate from 50 LPH to 200 LPH.
The results and contours are obtained from Ansys CFD Post.
This shows the conformity of the CFD results presented in this work.
The simulation results indicate that the heat transfer parameters like Nusselt number and heat transfer coefficient are higher for the helical tube in tube than the straight tube in tube.

Along with the development of computer capability and CFD (Computational Fluid Dynamics) technology, the numerical simulation of multi-phase flow has been applied more widely in recent years [2-4].
Here a CFD method is used to attempt to make a three-dimensional numerical simulation in order to explore the flow pattern inside the cavity of the SLG modifying machine.
The CFD software-FLUENT has been used to carry out the three-dimensional simulation of gas-particle two-phase flow.
•The non-uniform velocity field, pressure field, particle concentration and moving trace are obtained from the simulation results by means of CFD software FLUENT, which is helpful to reveal the flow characteristics in the SLG modifying cavities.
Brennan, et al.: A comprehensive CFD model of dense medium cyclone performance, J.

Consequently, 3D CFD simulations were conducted using ANSYS FLUENT 13.0 software, of which their results were compared with the experimental counterpart.
The comparison between the results of the developed CFD models and the experimental data showed very close agreement.
CFD simulations carried out for the predictions of flow pattern in bubble column reactors using 1D, 2D and 3D with k–ε models.
Cfd Simulations of Bubble Column Reactors: 1d, 2d and 3d Approach, Chemical Engineering Science. 60 (2005) 6733-6746
[7] Zhang, N., Lu, B., Wang, W. and Li, J. 3d Cfd Simulation of Hydrodynamics of a 50 Mwe Circulating Fluidized Bed Boiler, Chemical Engineering Journal. 162 (2010) 821-828

Furthermore a 2-D CFD code has been used to perform a detailed analysis.
Numerical Method Based on the definition of flow model from [5.6 &13], the flow inside our model suited for the continued flow model which means the numerical method of solve N-S equation described in [8] is valid for simulation of flow and heat transfer in the research object. 1-D model and 2-D CFD model.
Fig.7, Fig.8 and Fig.9 show the temperature, pressure and the heat transfer rate across the diaphragm, respectively, over a cycle in the compression space as obtained from the 1-D Sage and 2-D CFD model simulations.
The maximum error of simulation result is less then 5% which will be accurately enough for engineering application.
The CFD simulations present a more realistic approach to the model.

Good correspondence is achieved in comparison with CFD simulation results for a zig-zag cooled power transformer winding.
Pressure Drop Correlations CFD simulations of single T-junctions and elbows are now performed to set up accurate pressure drop correlations.
CFD Simulations The ‘measured’ pressure drop is determined by CFD simulations.
Results are compared to those of the CFD simulation.
However, there is still a quantitative mismatch between the CFD simulation and the network model.

In this paper, Based on the research of CFD basic theory and several key technologies, the numerical model for solving three-dimensional flow field around the open water rudder is proposed.
The numerical results are compared with experimental results, showing that the CFD model which is proposed in this paper is suitable for computation of hydrodynamic forces and simulation of the viscous flow around the open water rudder.
Introduction At present, CFD is used widely to analyze the open water rudder’s hydrodynamic forces by engineers [1].
Table 1 Open water rudder numerical simulation test No.
Reynolds Test type Test method Simulation Purpose 1 1.82×106 Going straight ahead test.

Analysis of temperature field in an Oil-shale retorting furnace with gas heat carrier based on CFD BAI Jingru1, a , XIN Siyu1, b , WANG Qing1, c , QIN Hong1, d 1 School of Energy and Power Engineering，Northeast Dianli University，Jilin Jilin,China a bai630@mail.nedu.edu.cn , b syxinsyxin@sina.com , c rszx@mail.nedu.edu.cn, d qinhong01@163.com Key words：CFD; oil-shale; retorting furnace; temperature field Abstract.
In this paper, the temperature field in the accumulation body of nobby oil shale inside the retort area was simulated as porous media by CFD.
Fig. 1 Structural schematic map of experiment furnace Fig. 2 The mesh of this modeling Simulation Modeling.
Based on the trim size of gas retort, the geometric model is built, and gridded in the ICEM-CFD.
In their designing process, because of the large inside space, the influence by the side wall on the interior stack is smaller than that of the small gas retort, and the simulation outcome is more accurate.

Heating of a novel field shower equipment was computational simulated by CFD software in the schematic design phase, and the correction of simulation was verified in the environment laboratory.
For the novel shower equipment, CFD (Computational Fluid Dynamics) [4] is adopted in this paper to do research on the heating in cold environment.
According to the initial and boundary conditions, the CFD software Airpak is applied to do the simulation.
Fig. 3 shows the simulation results.
CFD model of the airflow, heat and mass transfer in cool stores[J].

Here we have used and compared Finite volume (CFD) and LBM numerical methods to simulate the flow over a cylinder in microscale CFD Simulation using ANSYS Fluent The investigation of the flow over a 2D cylinder is carried out by using the laminar model.
Literature Cd Cd obtained by CFD Cd obtained by LBM 5.67 (Dinesh) [7] (Poiseuille Flow) 5.31 5.52 3.43 (Tuann et al) [8] (Free Flow) 5.31 5.52 The reported data indicate that the values of the drag coefficients obtained from LBM and CFD simulation are very close to prior works results.
S D S/D CFD (ANSYS) LBM (MATLAB) %Difference CFD vs.
Simulation of flow around bluff bodies and bridge deck sections using CFD (Doctoral dissertation, University of Nottingham)
Choice of units in lattice Boltzmann simulations. 

It was shown that the important parameters including the mass flow distribution of each outlets and the flow structure near the windshield and side windows could be quickly evaluated from the steady state CFD simulation results in the early design stage.
However, transient CFD simulation, considering cabin temperature distribution or phase changing, needs a lot of computational resources and time.
Based on the motivation of pre-evaluating the HVAC system performance in the early design stage, the steady state CFD simulation of a passenger car’s defrosting duct was carried out.
The whole geometry model for CFD simulation, shown in Fig. 1, consists of the defrosting duct, interior trim, seats, cabin, two front passengers and almost all the cabin accessories.
The numerical simulations were carried out using a commercial CFD code, ANSYS Fluent.