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Numerical Simulation of Low Reynolds Number Flows based on CFD Yan-ping ZHAO1, a,Dong-li MA1AND Yu-hang QIAO1 1School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China ayanpingzhao@ase.buaa.edu.cn Keywords:low-Reynolds number; numerical simulation; transition model; flow analysis.
Simulation results show good agreement with the experimental data.
CFD was useful where low Reynolds number flows are too difficult to investigate experimentally.
In this paper, numerical simulation of low Reynolds number flows around Eppler387 airfoil was carried out using improved RANS equations based on CFD.
Transition SST model was demonstrated and used for the simulation of flows around Eppler387 airfoil based on CFD.

According to the method, new energy-saving burner system framework is analyzed, fuel combustion calculation, key institutions check and CFD simulation are combined in the technical route of burner structure design.
The two results above show that burner in this paper can satisfy burning abundantly requirement, thus, the structure design of burner is relatively reasonable in combustion calculation and check way. 4 Simulation and optimization of burner critical component In this paper, CFD simulation technology is adopted to simulate actual burning environment, and the simulation results is used to conduct structure optimization of burner.
Figure 4: Annular nozzle institution speed field simulation results Figure 5: New energy-saving buner system Take fuel burning calculation, burner structure design, burning check of key parameters, components of the burner and key mechanism CFD simulation into account, the new energy-saving burner system is shown in Fig.5.
Theoretical calculation and CFD simulation are adopted to test, validation results of these two methods indicate that the pressure loss of the mechanism in this paper is in the actual burning allow range
(3) The CFD simulation results of the air suction institution of the burner show that pressure field is relatively uniform, flow direction of the velocity field in the ring canal is symmetrical, speed difference is small.

A 3D engine simulation shows differences in swirl motion and turbulence between the original symmetric valve lift profile and the DVL.
The CFD simulation was focused on 4000 rpm as the engine speed was tested for the best efficiency and BSFC while maintaining power.
The simulation was used to test the transient effects of the valve lift created by the DVL movement.
A flame speed propagation analysis was done to estimate how slow the real flame speed is when compared to the simulation flame speed.
The validated simulation can be use to test the actual engine for modifications without using the actual engine.

The conclusion can be drawn that the calibration of the relationship between flow and differential pressure with CFD is feasible.
The CFD-based flow measurement method, as a more simple and convenient way, can be applied in large-scale low-lift pumps.
The CFD-based calibration way was compared with the pump set test approach.
Patel: Numerical Model for Simulation of Pump-Intake Flow and Vortices.
Wang: Analysis on CFD Application in Water Pumps.

CFD Simulation and Experimental Study on Solid-liquid Hydrocyclone Huang Si a, Yue Le b, Luo Li c School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou, China 510640 ahuangsi@scut.edu.cn, byl19870125@163.com, chezezhifu-001@163.com Keywords: hydrocyclone; solid-liquid two-phase flows; numerical simulation; experimental test.
This paper performs a simulation using CFD technique to predict the separation performance of a hydrocyclone and therefore to improve its efficiency.
Simulation Simulation model and mesh generation.
The simulation is performed by ANSYS CFX code.
The comparison between simulation and test results proves that the two-phase flow model and CFD simulation in this paper are feasible.

Determination of the Fan Performance Using CFD In this paragraph, the fan characteristic is determined for a usual electronic cooling fan with a diameter of 87 mm and a width of 16.5 mm.
In Fig. 1, the simulation domain and the volume mesh are shown.
Figure 1: Simulation domain and volume mesh for fan calculations The volume mesh was generated using the 3D polyhedral mesher.
Simulations have been done from Q=0 m³/h in steps of ΔQ=10 m³/h until the total-to-static pressure rise became negative.
As a next step the test rig will be built and comparison between measurements and simulations are planed to be shown in detail in a next publication.

BLADE STRESSES AND CFD ANALYSIS OF AXIAL GAS TURBINE Vikas Kumar1, a*, Keshar Patel2, b and Vikram P.
For that point including losses design the streamline flow path and converging results of CFD analysis and visualization the thermodynamic parameters.
A comparison of aerodynamic computational results using CFD analysis, vibration analysis stress analysis 3D aerofoil analysis in AxSTREAM with precisely Final aerodynamic efficiency estimation of different designs is made with CFD simulations.
Fig. 1 Filtered feasible solutions Flow path and CFD analysis AxSTREAM software dominates the other CFD simulation for turbo machinery because designing 3D blade profile with precisely and very fast [3, 4].
CFD analysis of single stage with thermodynamic parameters and converging the results.

Flow Dynamic Simulation of Micro Abrasive Water Jet Jingming Fan1,a, Changming Fan1,b and Jun Wang2,c 1School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510006, China 2 School of Mechanical and Manufacturing Engineering, The University of New South Wales, Sydney, NSW 2052, Australia ajmfan@gdut.edu.cn; bfanchm@gdut.edu.cn; cjun.wang@unsw.edu.au Keywords: Micro abrasive water jet; Computation fluid dynamics (CFD) simulation; Impinging jet; Particle velocity Abstract.
Simulation of the dynamic characteristics of micro abrasive water jet (MAWJ) is conducted using computation fluid dynamics (CFD) software Fluent 6.3 flow solver.
In this paper, the liquid-solid two-phase flow field in nozzle and the free jet and impinging jet flow field outside the very fine nozzle is simulated by the commercial computation fluid dynamics (CFD) simulation software Fluent 6.3.
Simulation Results and Discussion Free Jet.
Conclusions In this paper, by using CFD simulation, the MAWJ flow field and jet dynamic characteristics of the free jet and impinging jet have been presented.

Cut section of catalytic converter 1.2 Computational Fluid Dynamics (CFD) Computational fluid dynamics is a computer-based simulation method for analyzing fluid flow, heat transfer, and related phenomena such as chemical reactions.
Basics of Computational Fluid Dynamics (CFD) 2.1 Introduction The purpose of this dissertation is to use fluent software to simulate exhaust gas flow in a Catalytic converter and also to validate the simulation with actual experimental results that were conducted.
Computational fluid dynamics (CFD) is a computer-based simulation method for analyzing fluid flow, heat transfer, and related phenomena such as chemical reactions.
Analysis of the Effects of Catalytic Converter on Automotive Engines Performance Through Real-Time Simulation Models.
CFD simulation of the effect of upstream flow distribution on the light-off performance of a catalytic converter.

Finally, the influence of the front wing and rear wing on the whole vehicle will be evaluated through CFD simulation.
The paper is mainly focused on the computer-aided design based on CFD simulation, and when the program is finished, a more comprehensive study including wind tunnel test and track test results will be presented.
A comparative simulation result regarding flow separation is presented in Fig. 1(a) and Fig. 1(b).
Fig. 6: Full car CFD streamlines for the 2011 vehicle Tab. 4: CFD analysis results of 3D full car.
E., Bahaj, A.S.: Comparison between CFD simulations and experiments for predicting the far wake of horizontal axis tidal turbines, Sustainable Energy Res.