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Usually, there are two methods for the fluid flow: experimental research and numerical simulation.
With the development of computational fluid dynamics (CFD), it has been possible to perform three-dimension numerical simulation to the whole machine of the pump.
The numerical simulation in the fluid machinery can replace the experiment to some extent, reduce costs, shorten development time, and provide rich information of the flow field and a new way for the fluid mechanical design.
Numerical simulation calculation Meshing and boundary conditions.
We can conclude that the simulation results of single stage are found to be in good agreement with real experimental value.

Currently there are three types of methods based on the continuous N-S equation: direct numerical simulation (DNS), large eddy simulation (LES) and Reynolds average numerical simulation (RANS).
The simulation results are as follows.
Simulation Results.
Figure 5 shows the LB-LES method simulation results under high pressure.
The actual observation to this structure matches the LBM simulation result.

Samawe et al. [7] manufactured a SS prototype for CO2 separation from NG with 70% CO2 to validate a proposed CFD model.
The experimental results led to improvements in CFD numerical modelling and successfully validated and proved the concept of CO2 separation by SS.
After simulations and technical results, the three cases are compared in terms of power consumption and CO2 emissions.
Castier, Modeling and simulation of supersonic gas separations, J.
Jin, Numerical simulation of CO2 condensation process from CH4-CO2 binary gas mixture in supersonic nozzles, Sep.

Overshoots reproduced by the model simulation output are considered to have the same actual overshoots produced by step response input.
Thus, the simulation models closely follow the actual response of the thruster system.
Garcia Cena, Cesar Alvarez Arocha, Rafael Aracil Santonja: Experiences and results from designing and developing a 6 DoF underwater parallel robot, Robotics and Autonomous Systems, Volume 59. ( 2011) [4] Muhamad Husaini, Zahurin Samad, and Mohd Rizal Arshad: CFD Simulation of Cooperative AUV Motion, Indian Journal of Marine Science (IJMS), Vol.38(3). (2009) [5] Wei Wu, Da-Wei Jhao, Control of a direct internal reforming molten carbonate fuel cell system using wavelet network-based Hammerstein models, Journal of Process Control, Volume 22. (2012) [6] Luigi Piroddi, Marcello Farina, Marco Lovera, Black box model identification of nonlinear input–output models: A Wiener–Hammerstein benchmark, Control Engineering Practice.(2012) [7] Necla Togun, Sedat Baysec, Tolgay Kara, Nonlinear modeling and identification of a spark ignition engine torque, Mechanical Systems and Signal Processing, Volume 26.(2012) [8] J.

Sunun: Axial gas and solids mixing in a down flow circulating fluidized bed reactor based on CFD simulation.
Liu: Numerical simulation on superheated steam fluidized bed drying II.
Experiments and numerical simulation.

Numerical Simulation on the Aerodynamic Characteristics Effect of Ribs Acting on the Cooling Tower HARAZIM Petr1, a *and VRÁBLÍK Lukáš1,b 1Faculty of Civil Engineering, Department of Concrete and Masonry Structures, Czech technical university in Prague, Thákurova 7, 166 29 Praha 6 - Dejvice apetr.harazim@fsv.cvut.cz, blukas.vrablik@fsv.cvut.cz Keywords: external surface wind ribs, natural draught cooling tower, wind pressure load Abstract.
Modeling wind ribs effects for numerical simulation external pressure load on a cooling tower of KAZERUN power plant-IRAN.
CFD investigation of flow in and around a natural draft cooling tower.

ONAMA provides tools that have a close affinity with practical simulation, thus making the learning process for students more applied.
Tools integrated in ONAMA provide turnkey solutions with the practical simulations.
· Mechanical Domain OpenFOAM: CFD software package.
Meep: A free finite-difference time-domain (FDTD) simulation software package
· CUDA Enabled Applications NAMD: Parallel molecular dynamics code designed for high-performance simulation of large bimolecular systems.

A Study on Large Power Jet Ventilation Technology in Long Tunnel Construction Heng Zhang 1, a, Shougen Chen 1,b and Liang Chen 1,c 1School of Civil Engineering, Southwest Jiaotong University, Chengdu , Sichuan, 610031, China azhangheng198517@126.com, bcsgchen2006@yahoo.com.cn, cclng9716@163.com Keywords: Jet Fan Ventilation, Numerical Simulation, CO Concentration.
This paper investigated the simulation of tunnel construction ventilation with large power jet fans during the construction of Jinping Auxiliary Tunnels by using the computational fluid code FLUENT, the layout of jet fans in the tunnels is optimized.
CONCLUSION By applying the CFD software—Fluent to simulate the air flow under various layout of the jet fan in the cross and longitudinal sections.
Numerical simulation study on ventilation flow field of wall-attached jet in heading face[J].

Numerical Analysis on the Influence of the Unsteady Effect upon the Flow Characteristics in a Human Airway Kun Hyuk Sung1, a,Hong Sun Ryou1,b 1School of Mechanical Engineering, Chung-Ang University, 221 HeukSuk-Dong, DongJak-Gu, Seoul 156-756, Republic of Korea ailmare.khs@live.co.kr, bcfdmec@cau.ac.kr Keywords:CFD, Human Airway, Unsteady effect, Turbulence Kinetic Energy, Recirculation zone, Secondary Flow Intensity Abstract.The focus is on the unsteady effect on the flow characteristics considering the real respiration in a human airway.
Lessmann, Computer simulation of the flow field and particle deposition by diffusion in a 3D human airway bifurcation.
Wilcox, Turbulence modeling for CFD, second ed., DCW Industries Inc., Canada, 1998

The direct numerical simulation (DNS) of Navier-Stokes (N-S) equations seems the most powerful technique to predict the location of transition, for it can simulate the whole transition process.
FLUENT is a general-purpose computational fluid dynamics (CFD) software that ideally suited for incompressible and mildly compressible flows.
Conclusions In this paper, we combined PSE and direct numerical simulation to investigate the evolution of the disturbances and the laminar-turbulent transition in three-dimensional incompressible boundary layer of the infinite flat plate.
L., 1993, “Spatial Direct Numerical Simulation of Boundary-Layer Transition Mechanisms: Validation of PSE Theory,” Theor.