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The Research to Hydrocyclone Desander of Sand Removing Based on Crude Oil Ding Fenga, Xiaofei Chang, Xianyong Zhang, Shouyong Li, Chao Ruan, Yu Xie School of Mechanical Engineering, Yangtze University, Jingzhou, Hubei, 434023, China afengd@yangtzeu.edu.cn, fengd0861@yahoo.com Keywords: Hydrocyclone CFD modeling Offshore platform Crude oil Abstract.
This paper discusses the requirements for the design of the hydrocyclone desander equipment with compact structure, applicable to offshore drilling platforms，and carrying out CFD simulation, the results showing that the particle size of 75 of sand, grit removal efficiency above 90%. 1.
In pace with rapid development of computer hardware and software technology recently, the use of computational fluid dynamics (CFD) flow properties of engineering technical analysis has become a development[1-9]. 2.
[3] Ma Wenbing,2006,The Flow Field Simulation and Control Research of Hydrocyclone [4] XU JI, 2006 The Flow Field Simulation and Control Research of Hydrocyclone[D]; Liaoning University of Science and Technology
[7] ZHU Tong; Tsutomu Nozaki; XU Cheng-hai; ZHANG Shi-wei (School of Mechanical Engineering and Automation; Northeastern University; Shenyang 110004; Liaoning Province; China); Numerical analysis of particle motion in flow field of revolving-type solid-liquid separator[J], Chemical Engineering(China), 2007，35(8): 37-41 [8] Yong Dong, 2009, Research on Simulation of Multiphase Flow & Structural Optimization Design of Liquid-Solid Separator, Tianjin University, May [9] Wei Wang, 2009, Simulation of Solid-liquid Separation in Hydrocyclone by Applying CFD, Tianjin University, May [10] Kelsall D F.A study of the motion of solid particles in a hydraulic cyclone[J].

With the rapidly development of computational fluid dynamics (CFD) technology, CFD simulation has become an important method to solve practical engineering problems.
CFD Simulation Model of two-phase.
The theoretical and CFD simulation results are generally consistent with test data, pressure drop is increased with the flow.
However, the larger deviations between theoretical values and test data occur at higher oil-water ratio, but the CFD results are still reliable.
(a). oil-water ratio: 0/100 (b). oil-water ratio: 20/80 (c). oil-water ratio: 60/40 (d). oil-water ratio: 100/0 Fig. 7 Comparison of ΔP values between test, theory and simulation Conclusions This paper investigates an oil-water phase model in downhole Venturi meter through the theoretical calculation, CFD simulation, and experimental test.

Experimental Study on Flow Field Characteristic of Bag Filter Fu Hai-ming, Zhao You-jun School of Enviromental science and engineering, Donghua Universiy, China No.2999, Renming Road, Songjiang, Shanghai,201620 China fhm@dhu.edu.cn Keywords: Bag Filter; Unevenness Distribution; CFD Numerical Simulation; Flow Field; Filtration Velocity.
In order to select best filtration velocity of bag filters and to improve gas flow distribution, to increase collection efficiency and to reduce operation resistance, gas flow distribution was tested by using hot-wire anemometer, CFD simulation was made and basic accordant result was obtained by comparing simulation result with experimental result.
[3] Dang xiaoqing; yuan shengli; yao qun et al; Study on gas flow distribution in straight inlet baghouse by using cfd method[J].
[4]Gao Hui; Guo Liejin.Numerical Simulation of Gas-Solid Two-Phase Flow in a Filter Dust Collector with a Low Entry[J].
Numerical Simulation and Analysis of the Gas-Solid Two Phase Flow in a Cartridge Filter[J].

The effect of added plates on the pressure field of the near wake of the model and mechanism are analyzed by CFD method.
CFD Procedures.In the CFD simulations, software Fluent 6.2 and the RNG k-ε turbulence models were applied to improve the accuracy of simulations.
The steady state CFD simulations indicate that addition of the flat plates reduces the drag about 5~8%.
Conclusions Based on the CFD simulations and above analysis, the following conclusions can be drawn: (1) Numerical simulation and theoretical analysis explicitly the characteristics of external flow field for the simple van body truck model.
(2) The steady state CFD simulations indicate that addition of the flat plates reduces the drag about 5~8%.

Gao2,b , Xiaolin Sun3,c 1 Room 802, School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China 2 Room 810, School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China a gqjing@bjtu.edu.cn, b lgao@bjtu.edu.cn, c10121457@bjtu.edu.cn Keywords: ballast flying, high speed railway, DEM, CFD Abstract.
In the end, future possible microscopic ballast flying model method is presented by DEM coupled with CFD.
Table 1 Key parameters of the simulation Description Value Particles density 2600 kg/m3 Normal stiffness of contact 5*108 N/m Shear stiffness of contact 5*108 N/m Contact friction 0.5 1.1.
Conclusions and perspective In the paper, illustrating the ballast flying mechanism by microscopic DEM simulations without train lateral wind effects, results show that ballast flying (upward displacements) increase with train dynamic force while decrease with ballast size and friction.
The CFD solver added to the DEM platform, where the coupled analysis is conducted.

The effects of Reynolds number, volume concentration of suspended nanoparticles on the heat transfer characteristics were investigated using CFD software.
Simulation: The shell and tube heat exchanger being utilized in this experiment consists of a shell with an internal diameter of 0.146m and tubes of internal and external diameters 0.01m and 0.0133m respectively.
The grid used for the simulation is an unstructured mesh (hexagonal and tetrahedral elements).
A commercial CFD code (Ansys Fluent 13.0), is employed to study effect of nanofluid on convective heat transfer coefficient by simulating the shell and tube heat exchanger.
Water and Al2O3/water nanofluid were used as working fluid for the simulation.

Secondly, the constructed three-dimensional model is meshed by ICEM CFD software.
The results of the simulation show that the temperature near the oil seal edge is higher than oil chamber and oil-returning slot.
Secondly, the constructed three-dimensional model is meshed by ICEM CFD software.
The temperature distribution law of the interstitial oil film on the hydrostatic center rack is obtained through the simulation.
The constructed three-dimensional model is imported to ICEM CFD software, and tessellates the mesh near the oil seal edge.

CFD results are presented to show the achievable preformace benefits.
Numerical Simulation CFD Model / Methods.
The computational domain shown in Figure 1.All impeller blade passages are modeled in the present simulations for achieve a more accurate result.
All CFD analyses employed air treated as an ideal gas for a working fluid.
Likewise, the CFD result was applied as a pressure loading condition on the blade.

Design, CFD Investigation and Implementation of a Novel Diverter Mechanism for Water Flow Measurement Y.L.
Yang Center for Measurement Standards, ITRI, 30 Ta Shueh Rd., Hsinchu, 300, Taiwan, China Keywords: Flow Diverter, Liquid Calibration Facilities, Draining Nozzle, CFD Abstract.
The simulations indicated that the good construction of feeding pipe where the original circular section was converted into rectangular resulted in approximately symmetrical velocity profile across the outlet section.
For CFD simullation, fully developed flow conditions was assumed at the inlet; and the tangential and radial velocities were assumed zero.
In this study CFD-ACE+ was adapted to investigate the construction of fluid flow diverter.

This study uses a numerical simulation method on CFD ANSYS FLUENT 19.1 software to determine the distribution of temperature, velocity, and ash particle data in the LTSH boiler area.
Methodology The investigation consists of 3 steps, namely making numerical simulations using CFD software for modelling, analyzing combustion in boilers with Coal Optimization using coal with 4400 kcal/kg and 4000 kcal/kg based on performance test data.
Modeling and Simulation Stage.
[5] Dewangan, K., Kumar, S., & Singh, R, Analysis and Optimization of Boiler Tube Failure Due To Erosion Using CFD Package.
[9] Krisnanda, LR, Analisa Laju Erosi pada Elbow Pipa Karena Partikel Pasir dalam Aliran Fluida Gas Menggunakan Simulasi CFD.