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According to this design scheme, numerical simulation of centrifugal pump (ns48) as turbine has been done.
The impact of long blade and short blade on the performance of the turbine was analyzed by numerical simulation and experimental method in reference [6].
Tab.2 Orthogonal design schemes Scheme number Combination of factors Scheme number Combination of factors Scheme number Combination of factors (1) 1-1-1-1 (5) 2-2-3-1 (9) 3-3-2-1 (2) 1-2-2-2 (6) 2-3-1-2 (10) 4-0-0-0 (3) 1-3-3-3 (7) 3-1-3-1 (11) 5-0-0-0 (4) 2-1-2-3 (8) 3-2-1-3 (12) 6-0-0-0 Numerical Simulation Conditions and Method Computational Domain Selection and Meshing The Pro/E software was used to build entity model and the ICEM-CFD was used to generate unstructured tetra/mixed grid for each component part.
Control Equations and Turbulence Model For the simulation, the ideal water at 20℃was selected as the working medium.
The torque (M) and total pressure of inlet and outlet (Pin, Pout) were reported from the FLUENT, when simulation convergence.

Many simulations and experiments have been implemented to elucidate the wake characteristic behind a pair of bluff bodies.
The purpose of this paper is to study the flow over two unequal circular cylinders in tandem arrangement by CFD simulations.
In section 2, numerical method for the 2D flow over stationary body simulation is described, including the governing equations and physical model.
Results for the simulation of flow over a static cylinder at Reynolds number 100 showed that the present algorithm is suitable for this work.
[5] Zhao, M., et al., Numerical simulation of viscous flow past two circular cylinders of different diameters.

Numerical simulation was applied to study the inclusion behavior in the rotational flow tundish for the industrial production of steel.
Therefore, in the present study, numerical simulation was carried out to investigate the inclusion behavior in the rotational flow tundish.
Schematic view of the rotational flow tundish Simulation of rotational flow The Navier-Stokes equations together with standard K-εturbulence model were solved to obtain a steady state velocity field inside the tundish.
Solution Procedure The CFD software CFX was employed to solve the continuity, momentum, and turbulence equations.
Inclusion removal under different conditions obtained by the random walk model Conclusions Numerical simulation has been carried out to study the inclusion behavior in the rotational flow tundish for the industrial production of steel.

Two-phase flow simulations can be performed on these 3D images using various simulation software [15, 16].
Meshed structure of the porous medium and boundary conditions for simulations [20].
So, by using this simulation the oil recovery can also be predicted using different nanofluids and brine.
Conclusion Direct simulations of two-phase flow simulations using micro-CT scan images of sandstone with primary crude oil saturation followed by brine and ZnO nanofluid injection have been studied.
Scientiarum, "A simulation model for two-phase flow in porous media," University of Oslo, Department of Physics, 1996

Numerical Simulation and Structure Optimization of the Main-Control Reversing Valve of Electrical-Hydraulic Hammer Shiwen DU a Yongtang LIb School of Material Science and Engineering, Taiyuan University of Science and Technology, Taiyuan, Shanxi, 030024,China a tykddsw@126.com , bliyongtang@tyust.edu.cn Keywords: numerical simulation Hydro-finite element CFD Electrical-hydraulic hammer Abstract: Based on viscosity hydrodynamics and hydro-finite element theory, flow field of the main-control reversing valve of electrical-hydraulic hammer was simulated.
Oil fluid parameters, coefficient of viscosity µ=0.018N.s/m2, density 900kg/m3; payload type is transient flow. 3.1 Simulation of steady-state hydraulic force It is difficult to control the manipulation process of main-control reversing valve of 15KJ electrical-hydraulic hammer, according to analysis, which results from the resistance deriving from axial force of steady-state hydraulic force inside valve cavity.
Obviously at this time there are a number of axial velocity components at the valve port, which can compensate steady-state hydraulic force. 3.2 Simulations of inlet throttle and outlet throttle of slide valve There are two slide valve structures, and one is outlet throttle slide valve, and the other is inlet throttle slide valve.
Dynamic Simulation of Commutation Process of Minitype Hydraulic Directional Value.
Vol.34(2002):P489 [2] Mahesh C and Kwon T H, Accuracy and Efficiency of Multi-variant Finite Element For Three-Dimensional Simulation of Viscous in Compressible Flows.

To investigate the water flowing law in the bifurcation, Li ling analyzed the water flow in the Y-pipe and found the simulation results having good agreement with the experimental results [4].
Rong Guiwen made simulation of the bifurcation to research the hydraulic characteristics of the flow, and the results also coincided well with the measured values [5].
The numerical simulation method was widely used in the research of the bifurcated pipe.
This study will optimize hydraulic shape of the bifurcated pipe by numerical simulation.
Wang: The Computational Fluid Dynamics Analysis- simulation and Application of CFD (Tsinghua University Press, Beijing), p.7-122, in Chinese.

CFD velocity result 2 The base of the drying chamber is perforated with holes by which the air passes through the converged inlet to ensure that the flow is uniformly distributed inside the drying chamber.
Figure.2 and figure.3 on CFD flow analysis confirms that the flow is uniform. 4.
[9]Riyad Hodali, Jacques Bougard Integration of a desiccant unit in crop solar drying installation: optimization by numerical simulation.
Simulation and energy efficiency analysis of desiccant wheel systems for drying processes.

The turbulent flow viscosity coefficient is calculated by the following formula: [7] Grid Division and Boundary Condition Settings In this paper, the main numerical simulation airfoil model is seagull airfoil.
MpCCI (Mesh-based parallel Code Coupling Interface) is the standard for simulation code coupling.
MpCCI has been developed at the Fraunhofer Institute SCAI in order to provide an application independent interface for the coupling of different simulation codes.
Fig.6 The kinetic energy variation Fig.7 The strain energy variation Fig.8 Y-position variation of the tip-end Conclusion In this paper, using the results of foreign bionic experimental airfoil, carrying out numerical simulation by CFD and analyzing the fluid-structure interaction effect of the seagull airfoil by software Mpcci.
Simulation of Low-Reynolds-Number and High-Lift Airfoil S1223 [J]，Proceedings of the World Congress on Engineering 2009 Vol II，July 1-3,2009

Numerical Simulation Analysis of Composite Air Purifying Device Jianlong Liua, Haiping Zhangb, Hanqing Wangc, Yuhui Chud College of Civil Engineering, Hunan University of Technology, Zhuzhou, 412007, China aljlphd@sina.com, bzhanghaiping27@126.com, chqwang2011@126.com, dchuyh126@126.com Keywords: Composite air purification device, Velocity field, Pressure drop, Numerical simulation.
For further studies on performance of the composite purification device, the device has been numerically simulated, through CFD simulation technology, by employing gas phase turbulence model, porous medium model and stochastic particle trajectory model.
Numerical simulation Calculation and results analysis The rotational speed of centrifugal fan affected flow velocity of gas.
Because of the effective filter net is a porous screen structure, belong to porous media, so porous jump is chosen to calculate. 3.5 The grid independence and Confirmation of simulation results Figure 3 shows simulation results comparison of mass concentration of particle in different grid numbers.
Numerical Simulation of Vortex Air Curtain Suction Dust Control System and Its Applications[J].

In this paper, the influence of dimension of central tube on the shell-side performance of the heat exchanger is investigated by means of CFD.
The investigation to the influence of central tube on performance is still limited, for this, central tubes with different diameter are designed, the part of fully-developed spiral flow is chosen, numerical simulation via ANSYS CFX 12 will be used to investigate this topic in the paper, to study the influence.
Conclusion 1) The central tube has limited influences on heat transfer or pressure drop respectively, the same flowing situation presents almost the same heat transfer ability and pressure drop; 2) Bigger central tube causes lower integrated performance, in the cases in this paper, the drop of integrated performance is about 3%~4% at the steps of the diameter of designed central tube. 3) Only numerical simulation is done in this paper without experiment, and only the cases of small-dimension heat exchangers are included, which only provides limited and theoretical reference for industrial application.
[4] Jian-Fei Zhang, Ya-Ling He, Wen-Quan Tao. 3D numerical simulation on shell-and-tube heat exchangers with middle-overlapped helical baffles and continuous baffles – Part II: Simulation results of periodic model and comparison between continuous and non-continuous helical baffles.
Numerical simulation on Heat Exchanger with Continuous Helical Baffles, Journal of Engineering Thermo physics, 2010, 31(4): 651-654