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In recent years, with the development of the technology of CFD (computational fluid dynamics) and the operational capability of computer, the technology of numerical simulation has made great progress, which has provided feasible methods for three-dimensional flow computation of the full flow conduit.
(2) CFD numerical simulation method can be used to verify the spatial frame design rationality of the concrete volute flow conduit.
Numerical simulation of internal flow of centrifugal pump [J].
CFD simulation for two-phase flow of sediment water in volute [J].
CFD analysis of large spiral case [J].

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.

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.

And then CFD is selected and accepted gradually to be a timely way to study complicated lubrication problems.
The meshes used in the simulations are structured and uniform, and the structural meshes near the boundary of various computing models get refined by the method of adaptive mesh refinement algorithm to improve the computational accuracy.
The surfaces throughout the simulations were assumed to be rigid.
Results and Discussion The results of the numerical simulations for various micro structures of grooves are performed.
However, the numerical results of CFD approach based on N-S equations should be examined by engineering experiments deeply.

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].

* mnormusa@fkm.utm.my Keywords: Aerodynamic, Simulation, Proton Inspira, speed, CD value Abstract.
Lastly, CFD is best method to numerically calculate fluid flow and to provide data that is complementary to theoretical and experimental data.
The general process for performing a CFD analysis is outlined below so as to provide a reference for understanding the various aspects of a CFD simulation.
Table 1 shows the data and the simulation results that been performed.
Conclusions The simulation was conducted on the Proton Inspira is achieved.

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.

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].

Simulation of Friction Stir Processing with internally cooled tool A.N.
In this work, friction stir processing of AZ31B Mg with an internally cooled FSP tool is simulated by a three-dimensional CFD model.
Theory CFD multi-physics finite volume-based software STAR-CCM+ was used in the simulation.
However, the stresses generated in the tool domain are not estimated in this work as it is completely based on CFD method.
(b) internally cooled tool Summary and conclusions In this work, FSP with internally cooled tool was modeled using CFD analysis.

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.