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CFD Simulation of Two-phase Flow in a Downhole Venturi Meter Feng Ding1, Huang Si2, a, Guan Yuhui2and Ma Weiguo1 1 School of Mechanical Engineering, Yangtze University, Jingzhou 434023, China 2 School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China a huangsi@scut.edu.cn Keywords: Venturi meter; two-phase flow; numerical simulation; CFD Abstract.
This work performs an oil-water two-phase flow simulation in a downhole Venturi meter to investigate the flow field and pressure characteristics with different flow and oil-water ratios.
Recently CFD technology has become an important engineering tool, so this paper uses CFX software to simulate the three-dimensional multiphase flow in Venturi meter, and provides the theoretical basis for Venturi meter’s operation and optimal design.
Some features and natures of the oil-water two-phase flow are found based on the simulation, such as phase stratification, potential cavitaion, higher pressure drop corresponding higher viscous fluids and so on.

In recent years, with the extensive use of the fluid mechanical analysis software CFD, some researchers applied the CFD to solve the oil film performances for sliding bearing [5-8].
Static performances solution for hybrid oil film bearing by using CFD method CFD introduction CFD denotes computational fluid dynamics based on classic fluid dynamics and numerical discretization method and is utilized to calculate and describe the fundamental equations of fluid motion.
The results are close to that of CFD.
Simulation of pressure field in hydrostatic bearing with finite element method [J].
Numerical simulation of flow in convergent wedge gap[J].

The efficiency of filling the moulds can be improved by using Computational Fluid Dynamics (CFD) filling simulations during the design of the mould.
As part of an on-going effort to develop a CFD tool for the simulation of LCM processes, a volume averaged energy balance equation has been derived and implemented in a custom OpenFOAM solver.
CFD simulations are sometimes used in the design of the mould or in the planning of the manufacturing process to predict the flow of the liquid matrix inside the mould.
The software packages used for such filling simulations include specialised tools such as PAM-RTM, RTM-Worx and LIMS and general-purpose CFD tools such as ANSYS FLUENT and CFX, Simulia abaqus/CFD, COMSOL Multiphysics and OpenFOAM to name a few.
{ keff∇⟨T⟩ } + SE (3) Implementation in OpenFOAM In order to study the importance of the pressure terms in Eq. (1), we need to implement Eq. (1) both with and without the terms in question in a CFD solver having all the characteristics mentioned in the introductory section and compare the simulation results with results from experiments.

The combustion process and emission characteristics of DI diesel were calculated using CFD software – FIRE.
In addition to the traditional test methods, numerical simulation the combustion process of internal combustion engine based on experiment is also a powerful measure [2].
Software FIRE is an engine CFD software developed by AVL company, it is believed as the best software in the world in analyzing engine model and solving engine problems which are related to CFD [4].
In numerical simulation of chemomotiveforce reaction process, average chemical reaction rate is the center issue.
CFD Studies of Combustion and In-Cylinder Soot Trends in a DI Diesel Engine – Comparison to Direct Photography Studies, SAE 2000-01-1889, 2000 [3] Borghi R, Delamare L, Gonzales M.

The computational grid that is used for CFD numerical simulation with CFDSOF®, hexagonal-surface fitted consist of 139440 cells.
CFD simulation done with α varies by 1, 1.1, 1.2, dan 1.3.
The computational grid that is used for CFD numerical simulation with CFDSOF® is shown Fig. 1.
CFD simulation at Re = 13000 shows there is no significant difference between all varied inverse-turbulent Prandtl number (α).
Effective Viscosity; Re = 63800 Conclusions CFD simulation with RNG k-ε has been performed.

Computational Fluid Dynamics (CFD) is used for the investigation of the aerodynamic characteristics of the truck.
With the development of computer technology, computational fluid dynamics (CFD) simulation in the vehicles aerodynamic characteristics has become an important research direction in automotive engineering for programming flexibly, getting more information, cutting costs and reducing engineering time.
However, CFD simulation still faces the challenge of predicting truck drag coefficients with accuracy and repeatability.
The heavy vehicle model is simplified appropriately to ensure the current simulation is going well.
Gu, The application of CFD methods to automobile aerodynamics, J2008 Journal of Hunan University, B09 52 [4] Fluent Inc.

Ins., Wuhan, China, 430064 aza2002@163.com, bemcry@163.com, ckzwhust@gmail.com, dlixianling1983@126.com Keywords: riblet surface, internal flow, drag reduction, CFD.
Computational fluid dynamics (CFD) numerical simulation is adopted to analyze the drag reduction ability of triangular riblet on tube internal flow.
Based on the simulation analysis, the drag reduction mechanism of riblet surface is studied.
A direct numerical simulation of laminar and turbulent flow over riblet- mounted surfaces [J].
Direct numerical simulation of turbulent flow over riblets [J].

Numerical Simulation of Quenchant Flow Characteristics in Large Quench Tank Hui Sun College of Mechanical Engineering, Shanghai Dianji University, Shanghai, China sunh@sdju.edu.cn Keywords: flow field, large quench tank, numerical simulation Abstract.
The computational fluid dynamics (CFD) technique is employed to predict the flow of quenchant in a large quench tank.
In this work, the flow field in a large quench tank is predicted by adopting CFD technique.
In order to make the CFD analysis manageable, a number of simplifying assumptions are made.
CFD modeling of quench tank agitation, Proceedings of the 10th Congress of the IFHT, Brighton, UK, (1996), 655-669

Estimation of the Induced Hydrodynamic Periodic Forces of Marine Propeller under Non-Uniform Inflow via CFD Mohamed Bennaya a, Wenping Zhang, Moutaz M.
They used CFD to obtain the transient responses of the propeller excitations.
P4119 Steady Hydrodynamics Simulation.
The simulations are supposed to be converged when the residual is below 10-5.
P4119 Unsteady Simulation.

The simulation setup for 4 and 8 PLCC packages are shown in figure 1.
A combined model is combination between PLCC packages and motherboard that been used during the simulation.
It is tolerable as slight difference in shape may not affect the simulation result.
The simulation results are obtained first with 4 PLCC’s and then with 8 PLCC’s and presented accordingly.
In the simulation model, the arrangement of the packages begins with the PLCC 1 located in front of motherboard followed by 2, 3 and 4.