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China jack197745@gmail.com Keywords: Flue gas heat exchanger; Efficiency and economy; Numerical simulation for flow field and temperature field; CFD soft ware Abstract.
Finally, on base of the simulation, the exchanger’s efficiency and economy were calculated.
Secondly, flow field and temperature field in the operative exchanger were numerically simulated by using FLUENT, a CFD soft ware.
In order to furtherly test correctness of the simulation, some other simulation results are observed.
The above observes confirm the simulation’s accuracy and therefore the heat exchanger’s characteristics could be researched on base of the simulation.

A simulation model of the capillary tube in melt flow indexer was developed to predict the melt flow behavior and properties of the polymer composite using Computational Fluid Dynamics (CFD) simulation.
This research aims to study the melt flow behavior of the PLA composite filament reinforced by iron particles (Fe) at different temperatures (200 °C, 220 °C, and 240 °C) using a melt flow indexer and comparing it with CFD modeling.
Computational Fluid Dynamics (CFD) simulation in COMSOL Multiphysics(R) was used for the simulation with a governing equation of laminar compressible flow in isothermal conditions relating to the MFI tests of the two polymers, as listed in Table 1.
The simulation results are in good agreement with the basic concepts of fluid flow in tubes.
Koç, Fused Filament Fabrication Process: A Review of Numerical Simulation Techniques, Polymers. 13 (2021) 3534

In this research a numerical analysis on a single cylinder engine using computational fluid dynamics (CFD) is presented.
Engine Flow Analysis The major benefit of the successful implementation of engine analytical models is that engine development time and costs would be reduced through their use [2].Many authors use CFD calculation to analyze the flow behavior on internal combustion engine([3], [4], [5], [6] and [7]).References [3] and [4] conducted different analysis for definition of best geometry of intake port using CFD codes.
As for Qi and his associates [4], they have used two different CFD codes to simulate a four valve, single cylinder engine with some modifications on the intake port to understand its effect on fuel vaporization.
For the transient model, the time-step used on simulation was 0.05 CA, which gives a time interval in order to 1x10-5 s.
Fontanesi: Turbulence Modelling in CFD Simulation of ICE Intake Flows: The Discharge Coefficient Prediction, SAE TECHNICAL PAPER SERIES 2002-01-1118 [6] C.D.Rakopoulos, G.M.Kosmadakis and E.G.Pariotis: Investigation of Piston Bowl Geometry and Speed Effects in a Motored HSDI Diesel Engine using a CFD against a Quasi-Dimensional Model, Energy Conversion and Management (2010), vol. 51, pp. 470-484 [7] C.D.Rakopoulos, G.M.Kosmadakis and E.G.Pariotis:Evaluation of a new computational fluid dynamics model for internalcombustion engines using hydrogen under motoring conditions, Energy (2009), vol. 34, pp. 2158-2166 [8] R.F.Huang, C.W.Huang, S.B.Chang, H.S.Yang, T.W.Lin and W.Y.Hsu: Topological Flow Evolutions in Cylinder of a Motored Engine During Intake and Compression Strokes, Journal of Fluid and Structutres (2005), Vol. 20, pp. 105-127 [9] STAR Methodology For Internal Combustion Engine Applications, VERSION 4.20, CD-adapco (2013)

E-mail: liji98@tsinghua.org.cn Keywords: Ozone contactor, Computational fluid dynamics (CFD), Optimization, Disinfection, Bromate formation Abstract.
[7] Stamou, A.I., Improving the hydraulic efficiency of water process tanks using CFD models.
[10] Wols, B.A., et al., Evaluation of different disinfection calculation methods using CFD.
[11] Kim, D., et al., Large Eddy Simulation of Flow and Tracer Transport in Multichamber Ozone Contactors.
[12] Li, J., et al., Application of computational fluid dynamics (CFD) to ozone contactor optimization.

Research progress of EAHE all over the world  Theoretical and simulation study.
The temperature field superposition method was adopted during the simulation.
Bhutta et al. [8] introduced the application of CFD technology in the direction of simulation.It was clear that CFD can simulate well all kinds of heat transfer performance of EAHE system.
At the same time, they used the CFD technology to simulate the soil temperature field of the soil around the earth to air heat exchanger.
[15] Song Ling, Zhu Yingxin, Simulation study on cooling potential of multi-tube earth-air tunnels, J.

CFD analysis of early diaphragm removal in expansion tubes James M.
An inviscid, axisymmetric model was created using Eilmer3, a compressible CFD solver developed at the University of Queensland.
One-dimensional CFD Analysis Simulations using the L1d code ran into a fundamental problem in accurately simulating early opening.
This model was then used for early diaphragm removal simulations, but the non-physical variations in temperature history were observed again.
Two-dimensional CFD Analysis Wave and Property Results.

askiranram@gmail.com, bupendra4nits@gmail.com, cak.dey@cit.ac.in Keywords: Computational fluid dynamics (CFD), Reynolds stress model, secondary flow, vortices.
In this paper Computational fluid dynamics (CFD) is used to study the meandering bend of the Barak River.
Large eddy simulation (LES) model were used to predict the secondary flows at the outer bank cell [10].
The commercially available CFD software Ansys FLUENT version 14 was used to study the velocity and vorticity fields at the critical channel sections (50, 60, 70, 80, 90and 100).
Booij, Measurements and large eddy simulations of the flows in some curved flumes, J.

Numerical Simulation of Fluid Mixing in Micro-Mixers Supasit Prasertlarp and Sompong Putivisutisak* Department of Mechanical Engineering, Faculty of Engineering, Chulalongkorn University, Pratumwan, Bangkok, 10330, Thailand *sompong.pu@chula.ac.th, Tel.: +66-2-218-6337 Keywords: micro-mixers, water-ethanol mixture, CFD Abstract A 3-D numerical simulation is performed to study the flow dynamics and mixing characteristics between two different kinds of fluid within T-shaped micro-mixers.
Simulation method Consider two different kinds of fluid within T-shaped micro-mixers.
Simulations were performed using the commercial software, Ansys FLUENT 12.0.
Girault, Mixing processes in a zigzag microchannel: finite element simulations and optical study, Anal.
Xuereb, Design of micromixers using CFD modeling.

It is accurate to use CFD hydrodynamic model in optimal design, but its efficiency is low.
According to variables design of experiment was arranged, then kriging model was established to by CFD hydrodynamic calculations of two-D hydrofoil.
The result shows that the Kriging model can reflect the identity of the objective, effectively reduce the cost of CFD simulation.
Both of the two turbulence models reaches good simulation of lift, whose error can be confined within 5% when angle changes between 0°~12°.
Then, reasonable experiment design according to variables is arranged, while kriging model is established to obtain hydrodynamic performances of 2D hydrofoil approximately by doing CFD calculations with retrogression treatment.

The present research shows that computational fluid dynamic (CFD) can be used to simulate mixing features such as solids off-bottom suspension, solids concentration and particle size distribution and cloud height.
CFD techniques have been used in the recent years to provide detailed information on the fluid characteristics resulting from the effect of the tank and impeller configurations.
Mathematical Modelling In CFD simulation, the governing equations for a multiphase system can be characterized into the Langrangian or Eulerian method.
So preliminary simulation of pure water flow field had been achieved, and then the particles were added to the stirred tank assuming that the particles were uniformly distributed in the tank.
In the absence of experimental data, it is not possible to verify this aspect of the simulation, but the information provides a valuable insight into the three dimensional character of solid-liquid mixing.