Search results

By using CFD software, the important parameters of velocity and pressure in the flotation column are analyzed and contrasted.
Three-phase flow field simulation study of oil, gas and water based on microbubble flotation Numerical simulation technology for the three-phase flow studies propose a new research method, this paper will research the three-phase flow field of flotation column based on the commercial CFD software FLUENT.
Since the simplified model is relatively simple, column flotation uses ICEM CFD modeling and meshing.
The geometric model and numerical simulation meshes This model doesn’t exist negative meshes, the minimum is Min = 0.970185, so it can be imported to FLUENT to complete the simulation calculation
Conclusions (1) By using CFD software, the important parameters of velocity and pressure in the flotation column are analyzed and contrasted.

The objective of this work is to show key steps of the simulation process focusing on interactions between fluid and structure domain and to review relevant simulation results.
In the field of shock absorber research, Martins et al. [4] presents a development and validation of a CFD model to investigate the oil flow in a shock absorber.
Guzzomi et. al [5] present an FSI approach towards prediction of a valve system performance by coupling the valve disc stack deflection with the CFD pressure results.
The most import process affecting the quality of simulation is the preparation of the mesh.
Spogis: Development and validation of a CFD model to investigate the oil flow in a shock absorber, SAE Technical Paper 2005-01-4030

In this work, the effects of the size of the fuel cell on the temperature distribution were investigated using CFD analysis.
Mesh Structure of the Simulation Model.
The simulation model is shown in Fig. 2.
The simulation was conducted using COMSOL Multiphysics v5.3 with the conjugated heat-flow simulation model [10].
Conclusion In this work, the effects of the size on the temperature distribution on MCFCs were investigated using CFD analysis.

Optimization Design of Gasoline Engine Intake based on CFD Zhou Bin XiChang College XiChang City SiChuan Province China 153104941@qq.com Keywords: Gasoline Engine, Intake, Design, Test, FLUENT, CFD Abstract: This paper analyzed the structure of the intake about 65-gasoline engine, which take into account t of the shortcomings of the lack of intake, a new intake system was re-designed.
(4)Re-arrangement of the cylinder head inlet position, full use of the guiding role of the cylinder wall, form an effective intake swirl. 3 Original and improved CFD simulation contrast In order to shorten the development cycle, save development costs, During new product trial before, first numerical simulation of the original and improved intake, contrast design effect. 3.1 Geometric modeling In order to accurate numerical simulation, as far as possible to simulate the actual intake, used 3D modeling software Pro/Engneer establish geometric model, shown in Figure 3 to Figure 6.
Fig.7 Simulations model Grid Fig.8 Mesh refinement at the valve Seat 3.3 The calculation results Meshed model imported Fluent software to numerical simulation, separately simulated the gas flow that Valve lift of 2mm, 4mm, 6mm, 8mm, 9mm, 10mm, And were calculated the original and improved Ricardo swirl ratio and Ricardo flow coefficient, shown in Figure 9 and Figure 10.
(a) 4500r/min (b) 4000r/min (c) 3000r/min (d) 2000r/min Fig.14 Original and improved p-φ Indicator diagram contrast The result show that, the cylinder head inlet improved design, maximum cylinder pressure elevated, it proved engine combustion been improved, this is the root causes of engine power and economy both improved[3]. 5 Conclusion 1) Through structural analysis of the original 65-type gasoline engine cylinder head intake, improved design of the inlet structure. 2) Fluent simulation results show that, improved inlet swirl ratio and flow coefficient have increased, especially in the valve lift when the larger, swirl ratio improving effect is more apparent. 3) Test results shown that, engine power are significant improvement, improved engine available torque on each speed. 4) Cylinder head intake improved, Engine fuel economy becomes better, engine fuel consumption decreased on each speed.
Thermal structural analysis and optimization of cylinder head and block with different configuration by simulation and measurement.

In this work, a mesh-free CFD method called Discrete Vortex Method (DVM) is developed to acquire unsteady loads around 2D complex objects.
The simulation must include series of pure heaving oscillations and also pure pitching oscillations [7].
Forced-translation and forced-rotation simulations are performed using DVM to simulate flow over flat plate geometry.
Table 1 lists the parameters for the simulation.
The developed mesh-less CFD solver, Discrete Vortex Method, can accurately simulate the unsteady flow around an oscillating body.

The internal flow field and the noise of inlet blocking fault and trouble-free for control valve are numerical simulated by CFD.
In this paper, three dimensional flow model of inlet blocking fault and trouble-free for control valve are established, the internal flow field and noise distribution are numerical simulated by CFD, the results provides the theoretical foundation for further study on the blocking fault of control valve.
Fig. 2 Trouble-free flow channel model Fig. 3 Inlet blocking flow channel model Simulation Settings Meshing Before the CFD simulation, the flow channel models need to mesh.
Fig. 11 Trouble-free local acoustic power Fig. 12 Inlet blocking acoustic power Conclusion Establishing the valve trouble-free and inlet blocking flow model, and applying the CFD numerical simulation of internal flow field and noise, obtained the following conclusions
References [1] Yantao An, Rujian Ma, Yong Wang, Simulation and Analysis the Internal Flow Field of Control Valve Bonnet Leakage, Applied Mechanics and Materials [J], 2013, 425, 2078-2081

Department of Environmental Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China Key words: CFD; street canyon; particle dispersion; numerical simulation Abstract.
A two-dimensional computational fluid dynamics (CFD) model for evaluating the airflow and particles dispersion within a street canyon was built up, which was based on the incompressible Reynolds Averaged Navier-Stokes equations, turbulence model and the particles transportation equation.
The square grids (each mesh cell is 0.5m x 0.5m) are used in the simulation.
Numerical simulation result for case1 (a) Air velocity distribution (b) Particle concentration distribution Fig.5.
Numerical simulation result for case7 From Fig.4(a) it can be seen that two vortices are generated.

Simulations show the satisfying performance and engineering value in demodulating the mixing AIS signals.
The CFD (carrier frequency difference) of the two signals are 2 kHz apart, and the code rate is 9.6 kb/s.
Fig. 3 Performance comparison between two Fig. 4 Performance comparison between two methods (CFD=0 kHz, 2 kHz) methods (CFD=6k Hz, 7 kHz) Fig. 3 shows SIR vs.
The CFD of the two signals are 0,2kHz apart.
The CFD of the two signals are 6,7kHz apart.

CFD Analysis of Flow Field in Large Quench Tank Simplifying Assumptions.
In order to make the CFD analysis manageable, a number of simplifying assumptions are made.
However, in order to balance the simulation accuracy with the computational cost, the number of nozzles is simplified based on the equivalent mass flow principle.
The CFD analysis of flow field in the large quench tank is based on the continuity and momentum equations.
CFD Analysis of Flow Field in Large Quench Tank Velocity Contours.

The solution and the analysis were carried out using finite volume CFD solver FLUENT 6.2.
In this section the three turbulence models used in the numerical simulation are described briefly.
Simulation CFD Model Validation.
In order to validate the proposed CFD model and implement in the presented study, the above mentioned model had been run.
The CFD model was validated through comparison with the ISO pressure drop correlation.