Search results

The effects of channel designs on PEMFC performance would be investigated by numerical simulation analysis.
The solid model for flow field simulations was shown in Fig. 1.
The post process of CFD results was achieved with the TECPLOT and Field-View software.
Before conducting the CFD runs with the complicated tree-like flow structure, a preliminary study on the single unit of four-branching channel was performed.
Only half of the computational domain was considered in simulations due to the symmetric channel configuration.

Results of this simulation show that as the CO2 dilution rate increases, flame temperature and combustion velocity decreases.
Kumar, Numerical simulation of the combustion of hydrogen–air mixture in micro-scaled chambers part II: CFD analysis for a micro-combustor, Chemical engineering science, vol. 60, pp. 3507-3515, 2005
Kumar, Numerical simulation of the combustion of hydrogen–air mixture in micro-scaled chambers.
Vlachos, A CFD study of propane/air microflame stability Combustion and Flame, vol. 138, pp. 97-107, 2004
Vlachos, Combustion characteristics and flame stability at the microscale: a CFD study of premixed methane/air mixtures, Chemical engineering science, vol. 58, pp. 4871-4882, 2003

The other two are designed by an inverse optimization method, which can modify the discrepancies between the CFD (Computational Fluid Dynamics) results and the linearized theory.
The pressure coefficient distributions of the Busemann biplane obtained by CFD technique is given in literature [5] (and).
In the simulation, the conservation form of Euler equations is solved by a finite-volume scheme.
Fig.5(a) shows the configuration of simulations with and .
Fig.5 Simulation model Some aerodynamic forces of different supersonic ring wings are illustrated in Table1 with and .

E-mail: chunmei.wang@hotmail.com Keywords: PCI, Dual-Fuel, Numerical simulation.
Numerical Calculation The simulation was performed by using 3D CFD code coupled with the CHEMKIN solver for chemistry calculations.
The RNG k-ε model was used for in-cylinder turbulence simulation.
The gasoline mass fraction is 40% in the simulation.
In the simulation, the diesel fuel injection timing was kept constant at -50 CAD ATDC.

On the other hand, we also used simulation software on PC to analysis the flow field and electric field for our design.
Fig. 5 Glass substrate and PDMS channel Fig. 6 Micro channel design and DEP-QCM device Pro/E Model and CFD Analysis After we made the design of micro chip and structure of micro channel, we can saved as the IGS file type and then analysis in the CFD-GEOM and CFD-ACE software.
We need to set up grid for every when a 3-D structure need any analysis, and this work can complete in CFD-GEOM.
After all pretreatment had done, those parameters will be set in CFD-ACE (Table 1).
We can see the design structure clearly in the CFD-ACE window and wait for some minutes to get the analysis result and modify the parameter to restart analysis (Fig. 7).

Therefore, in this work, a double inlet cyclone separator was designed for natural gas dehydration, and the numerical simulations of the gas-particle flow are presented by the commercial CFD software FLUENT 6.3.
Cyclone dimension used in this simulation are as shown in Fig.1.
In the numerical simulation, the above discussed Reynolds stress model (RSM) is used for the turbulent flow.
In the simulation, the steady solver is performed using the 10-3 convergence criterion accuracy for the calculation.
Kanani: CFD analysis of flow field in square cyclones, Powder Technol (2009), p. 349-357.

Design Builder, Energy Plus Simulation; 1.1.1.4.
Ansys CFD; 1.1.2.2.
Star-CD CFD; 1.1.2.4.
AutoCAD Simulation; 1.1.2.5.
Solidworks CFD; 1.1.2.6.

Numerical Simulation of Mixing Performance of Intermeshing Co-rotating Tri-screw and Twin-screw Extruders G.
In order to know the mixing performance in cross-section for PATSE, polymer melt flow field simulation and mixing simulation were conducted on PATSE with 2D model and a Carreau flow model to evaluate velocity profiles, particle trajectories, max shear rate, max stretching rate, dispersive mixing, distributive mixing, segregation scale, length of stretch, mixing efficiency with the commercial CFD package Polyflow and compared with those of twin screw extruder (TSE).
The models were simplified by using mesh superposition technology (MST) in the computational fluid dynamics (CFD) software Polyflow.
In this paper, 2D transient fluid model was used in the simulation.
The simulation parameters of this blending melts are as follows:=0.049s , =0.5, =5520[4].

The end clearance is the main geometrical parameter to establish the CFD analysis model.
Numerical simulation analysis of the flow field was carried out base on the above models by FLUENT.
The simulation results shown as follows: 1.
Numerical simulation of flow field of NC-Electrochemical contour evolution machining based on CFD technology.
Journal of system simulation, 21(2009)73-75

Numerical Simulation on South American Coal Reburning in a Pulverized Coal Combustor Zifang Wang1, Jianli Liu2, Liansheng Liu1, Bing Xia1, Jinxiang Wu1, Enyu Wang1, Xiang Gou1, a 1School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China 2Bohai oil water and power service company, Donggu Oil New Village, Binhai New Area, Tianjin 300452, China aCorresponding author email: gouxiang@sina.com Keywords: simulation; NOx; South American coal; reburning Abstract.
In this paper, CFD software has been used to simulate the reburning process of South American coal(SAm) so as to study the effect of the reburning on the combustion in the furnace and NOx reduction.
Mathematical model CFD software for calculating the three-dimensional turbulent flow is used in this paper.
Carla, Reburning and burnout simulations of natural gas for heavy oil combustion, Fuel. 83 (2004) 109-121