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Results and discussion Steady state simulation (i) Effects on varying Cell Densities The steady state kinetic analysis is carried out using CFD code AVL BOOST for different cell densities varying from 200 CPSI to 400 CPSI.
The simulation results are validated through experimental results obtained from Daniel Chatterjee et al.
The simulation is carried out for similar cell geometry and boundary conditions.
It has been concluded that the simulation results are in close agreement with experimental results except for the cell density 200CPSI, where a little increment of NOx conversion was found in case of simulation, when compared with experimental result.
Acknowledgement We greatly acknowledge AVL-AST for providing us software AVL BOOST to carry out this simulation work.

In this paper the performance of a shell and tube heat exchanger has been studied by CFD.
Table 1 provides a comparison of the actual technical specification data and the simulation results data.
Comparison of the technical specification against the simulation results.  
Results and Discussion The simulation results have been plotted below.
Zhang, Numerical simulation of laminar forced convection heat transfer of Al2O3-water nanofluid in a pipe with return bend, Int.

The complex geometry of landing gear brings a lot of difficulties in numerical simulation.
CFD combined with FW-H acoustic analogy hybrid approach is currently the most commonly used numerical solution method in aerodynamic noise studies.
Compared with large eddy simulation or other methods, computational efficiency of NLAS is higher.
Detached-eddy simulations over a simplified landing gear[J].
Simulation and experiment on aeroacoustic noise of aircraft landing gear[J].

CFD Analysis of Perforated Plates and Open-Cell Materials Aerodynamics Antonio F.
Both experimental and numerical simulation studies are available in the literature [5-8].
In this study, simulations were carried out utilizing the finite-volume-based Ansys Fluent code [18,19].
Results and Discussion To validate the flow simulation, pressure gradients across perforated panels with square holes resulting from the numerical simulations are compared to Allori et al. [5,6] experimental data.
Notice that the curve from the numerical simulations is within the experimental error bars.

Characterization of graphitic foams has been conducted using Computational Fluid Dynamics (CFD).
The influence of turbulence on the momentum and energy balances is modelled herein using a Large Eddy Simulation (LES) model.
All simulations were performed on a grid comprised of hexahedral volumes.
Summary Large Eddy Simulation has been used to model the turbulent flow and heat transfer in porous graphitic foam.
Sagaut, in: Large Eddy Simulation for Incompressible Flows, Springer, Berlin (2006)

The computer simulations were validated by the analytical solution results.
The CFD software is used for the numerical simulation, in which the Finite Volume method is adopted for the governing equations discretization; The SIMPLE method is applied to deal with the linkage between pressure and velocities.
And the local fRe obtained from simulation was compared with analytical solution showed by Yilmaz[6], which shows excellent agreement, as depicted in Fig.2
The Nusselt value obtained from simulation agreed with the theoretical value showed by Shah[7].
Fig.3 Effect of Reynolds number on the fRe Fig.4 Local Nusselt numbers Conclusions In this work, numerical simulation for fluid flow and heat transfer in the rectangular microchannel cooling passages are conducted.

BALL-NOSE VEHICLE'S ATMOSPHERIC PARAMETERS ESTIMATION BASED ON AIRFLOW VELOCITY Qian Lilin1,a*, Tao Jianwu1,b, Yu Fei2, Dai Haifa1 1Department of Flight Vehicle Control, Aviation University of Air Force, Changchun China 2Department of Control Engineering, Naval Aeronautical and Astronautical University Yantai China a*qianlilin1989@163.com, bjianwu.tao@163.com Keywords: Angle of attack, airflow velocity, Fluent simulation Abstract.
Fluent simulation and verification A vehicle model with a spherical nose is used for simulation in Fluent[10,11], the simulation operates at Mach numbers ranging from 0.4 to 1.6, angle of attack ranging from 0o to 30o and angle of sideslip ranging from 0o to 15o.
ANSYS ICEM CFD from learner to master[M].Beijing, Tsinghua University Press, 2013

In order to certify the reliability of the numerical simulation and the results conformity, we deemed it necessary to validate our simulations.
We referred to the work of Ameur [9] using the same simulation conditions.
Conclusions In this study, a numerical simulation of the mechanical agitation using a shear thinning alumina nanofluid has been investigated.
Prajapati, F.EIN-Mozaffari, CFD Investigation of the mixing of yield- pseudoplastic fluids with anchor impellers, J.
Heidari, CFD simulation of impeller shape effect on quality of mixing in two-phase gas–liquid agitated vessel, Chinese Journal of Chemical Engineering 28 (2020) 2733–2745

By comparing the calculated results of numerical simulation and semi-empirical theoretical equation, the numerical simulation is proved feasible in oil film state analysis parameter prediction, which can overcome the deficiency of single model and get good effect.
Numerical Simulation Model of the Single Oil Pad.
Three-dimensional geometry model of the oil film is produced by software UG, then the model is introduced into the pre-processor ICEM CFD to generate grid.
Critical flow and critical speed were determined by numerical simulation, it provides a theoretical basis of the temperature field and thermal deformation field calculation.
Zhang: Simulation and Scientific Computing (ICSC 08), pp. 675-679

Bhuiyan et al. [11] caried out three-dimensional CFD simulations to investigate heat transfer and fluid flow characteristics of a four-row plain fin-and-tube heat exchanger using the Commercial Computational Fluid Dynamics Code ANSYS CFX 12.0.
Reasonable agreement was found between the simulations and experimental data.
The results were compared with a CFD model that assumed the heat pipes were solid rods with a constant conductivity.
Numerical simulation results indicate that an optimal perforation design can be obtained to realize a maximum increase in the j factor.
Effects of geometric parameters for wavy finned-tube heat exchanger in turbulent flow: A CFD modeling (Article), Frontiers in Heat and Mass Transfer, Volume 6, Issue 1, pp 1-11