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The water pressure on the blade in the flow fields of different operating conditions is calculated by means of CFD software CFX.
R Xiao. etc. [1-2] calculated the flow field of the Francis turbine through the whole passage by CFD and concluded the linear relation between the maximum static stress of the runner and the power of the turbine by ordered fluid-solid coupling.
This paper does CFD calculations on the various conditions of design head through the whole passage of a certain Francis turbine in the northeastern China with the help of CFX and ansys workbench.
(a) Stay ring (b) Runner Fig.2 Grid of each part in calculation domain 1.4 boundary conditions The numerical simulation is finished with CFX.
This paper adopts the modeling software UG to do solid modeling for all the flow passage components of the Francis turbine through the whole passage and does three-dimensional numerical simulations on the Francis turbine through the whole passage by CFD.

To simulate the complex flow phenomenon of synthetic jets, the commercial computational fluid dynamics (CFD) code ACE+ ® was used for numerical calculations [6].
Theoretical Model Simulations using CFD software ACE+ ® were conducted to explore the flow structure of synthetic jets.
The maximum error between the predictions and the experimental results was well within 3.21%, indicating that the simulation software can predict synthetic jets with an adequately accuracy.
Numerical calculations were also conducted to examine various effects (including the driving voltage, relative phase delay of frequency, slot width, and cavity depth) on jet performance under pre-specified simulation conditions.
Spall: Physics of Fluids Vol. 17-4 (2005) 045103 [6] ESI US R&D 2004 CFD-ACE(U) ® V2004 User's Manual ESI-CFD Inc., Huntsville, AL.

From the information cited above, this work aims to study the separation process of oily water using ceramic membrane by CFD.
Figure 1 - Geometric representation of the tubular membrane and transverse 2D plane used in the simulations.
For numerical simulation, one mesh was generated using ICEM CFD software, as shown in Figure 3.
Table 5 - Parameters considered fixed in the simulations.
Fouladitajar, CFD modeling and simulation of concentration polarization in microfiltration of oil-water emulsions; Application of an Eulerian multiphase model, Desalination. 324(2013) 37-47

Keywords: Large eddy simulation, turbulent flow, Tee, periodic porous media Abstract.
Many turbulence models are used to numerical simulate the turbulent flow in porous media, such as direct numerical simulations (DNS), Reynolds averaged Navier–Stokes (RANS) equations and large eddy simulation (LES).
The present paper presents numerical simulations of the fluid turbulent flow at various inlet velocities in a Tee junction filled with periodic sintered copper spheres using LES and the sub-grid scale Smagorinsky–Lilly model on the commercial computational fluid dynamics (CFD) software FLUENT.
Fig. 1 Schematic of a Tee junction filed with periodic sintered copper spheres The three-dimensional turbulent flow in a Tee junction was solved using the CFD software FLUENT.
The water properties were assumed to be constant in the simulations.

Validation of Simulation Tool Solidworks Flow Simulation (SWF) has been chosen as the simulation tool for this study for a few reasons.
The software performs accurately for fluid dynamic simulations.
To ensure the SWF can perform the fluid simulation, the validation has been done to assess the applicability of Computational Fluid Dynamics (CFD).
It is necessary to obtain experimental data that can be used to validate CFD predictions.
Akbari, “CFD analysis of the ball valve performance in presence of cavitation,” Life Sci.

The solver of numerical simulations (CFD - ACE+ software package) was developed by using the finite volume method.
Experimental data and numerical simulations were conducted by Wei to study thermal performance and fluid flow for both counter-flow and parallel-flow configurations.
However, only results obtained from numerical simulations were provided by them.
Dimensions of the test section Numerical simulation Numerical study of the 3D behaviors of heat transfer by the microchannel heat sink with single-phase fluid flowing through was done by using the CFD ACE+ software, version 2008.2.
Chu, A study on the simulation and experiment of a microchannel counter-flow heat exchanger, Applied Thermal Engineering. 30 (2010) 2163-2172

At present time, FLUENT is one of the best modern CFD software which can be used to simulate the inner flow filed of nozzle.
Establishment of the Numerical Model and Simulation of the Inner Flow Field of Hema-Type ATY Nozzle Establishment of the Numerical Model.
Simulation of the Inner Flow Field of Hema-Type ATY Nozzle.
All the residual values are within 10-3 when the number of the iterations reaches 325.So the simulation are completed and the results are correct.
One Validation Case of the CFD Software Fluent: Part of the Development Effort of a new Reactor Analysis Tool[C]//International Conference on Nuclear Engineering, Proceedings, ICONE, P913-919. (2002) [3] Liang Zhao.

Study of Distribution and Quantification of Flammable Gas in Confined Space Ales Tulach1, a, Miroslav Mynarz 2,b * and Milada Kozubkova 3,c 1VSB – Technical University of Ostrava, Faculty of Safety Engineering, Department of Fire Protection, Lumirova 630/13, Ostrava - Vyskovice, 700 30, The Czech Republic 2VSB – Technical University of Ostrava, Faculty of Safety Engineering, Department of Fire Protection, Lumirova 630/13, Ostrava - Vyskovice, 700 30, The Czech Republic 3VSB – Technical University of Ostrava, Faculty of Mechanical Engineering, Department of Hydromechanics and Hydraulic Equipment, 17.listopadu 15/2172, Ostrava - Poruba, 708 33,The Czech Republic aales.tulach@vsb.cz, bmiroslav.mynarz@vsb.cz, cmilada.kozubkova@vsb.cz Keywords: gas leak, CFD models, explosive concentration, gas distribution Abstract.
Mathematical CFD models provide broad overview of spreading of natural gas, in dependence on the elapsed time from the start of leakage.
Today, number of specialized software for simulation of these effects exists.
Besides these products, very sophisticated programs for advanced simulations of flow can be used that are able to solve the processes associated with chemical reactions and heat transfer.
ANSYS Fluent software used for simulations in this contribution also belongs to such products.

The pressure distribution of CFD and ETW results are compared in Fig.2, in order to validate the numerical method applied in this paper.
Figure2 Comparison of CFD and ETW results Figure3 The definition of shock wave location Results and Discussion The shock wave on the upper surface of supercritical airfoil could be categorized into steady and unsteady shock.
According to the definition, the XCSH results simulated by CFD are given in Table 1.
[2] Dawei Liu, Dehua Chen, Yuanjing Wang, Reynolds Number Effect Investigation of Supercritical Airfoil Based on Wind Tunnel Test, 13th Chinese Conference on System Simulation Technology and Application, 2011
[3] Dawei Liu, Yuanjing Wang, Dehua Chen, Numerical Investigation on the Reynolds Number Effects of Supercritical Airfoil, International Conference on Advances in Computational Modeling and Simulation, 2011

The study includes flow simulations during the intake phase.
CFD (Computational Fluid Dynamics) has recently greatly improved.
To make CFD usable for mechanical engineers with limited CFD simulation knowledge, this software is completely automated.
The linear element that links the two intakes is necessary to equalize the intake parameters in the CFD simulation.
The study includes flow simulations of the flow field during intake.