Search results

Simulation and Experiment of Temperature Field in Catalytic Combustion Furnace of Natural Gas Longfei Yan1, a, Shihong Zhang2,b 1,2,Beijing Key Lab of Heating, Gas Supply, Ventilating and Air Conditioning Engineering, Beijing university of Civil Engineering and Architecture, China a315230892@qq.com, bshihongzhang@bucea.edu.cn Keywords: catalytic combustion; temperature field; simulation Abstract.
The physical model of natural gas catalytic combustion furnaces was established, furnace was simulated using ANSYS software, and verifying the validity of the simulation through the experimental test data.
Natural gas catalytic combustion furnace is a furnace driven by the natural gas catalytic combustion furnace type IX, in order to determine the concrete placement of firing ceramic and whether meet the requirements of firing ceramic, furnace modeling simulation and tested by experiment, comparative analysis the law within the furnace temperature field .The physical model of furnace was established, concluding that law of internal temperature field in furnace through the experimental test data The Simulation of Temperature Field in Catalytic Combustion Furnace The CFD commercial software ANSYS was used in this simulation in this paper, internal temperature field for furnaces driven by natural gas catalytic furnace was simulated Simulation modeling and parameter The furnace height is 1.8m, length 1 m, width 0.88m, side connections catalytic combustion furnace type IX (3 catalytic furnace), joint welded by iron plate with 12cm width , Wall of furnaces with asbestos insulation layer which
Fig.6 Experimental apparatus Comparison data as shown below: Fig.7 Measuring hole 1 simulation and test data Fig.8 Measuring hole 2 simulation and test data comparison comparison Fig.9 Measuring hole 3 simulation and test data Fig.10 Measuring hole 4 simulation and test data comparison comparison As can be seen by comparison, the simulated temperature is higher than the actual temperature about 100 degrees, but deviation is small compared with the high temperature of furnace chamber, which shows that the simulation results is feasible.
Conclusion The simulation results show that the temperature of the furnace cavity reach the temperature of the firing clay basically, the placement should be in where the temperature is higher, Such as the upper portion of the furnace chamber, the outlet of the furnace, or the place where hot air flow.

Finally, it compared the simulation results with the calculated value.
Finally, it compares the simulation results with the calculated value.
The simulation dates is shown as table 1.
Fig.5 is the contrast curve of the simulation value and the calculated value about the flux of the outlet warm water.
According to Fig.5 and fig.6, the change trend of the CFD simulation results and the calculated value are consistent; the value of number is also relatively close.

It can be used as verification of analyze or numerical simulation.
The numerical simulation is developed with computer calculate power, and it’s widely used in CFD area.
There are plenty of related test and simulation.
The result from fluid field is just the boundary conditions of structure simulation.
Therefore, by CFD simulation under multiple conditions, distribution and changing feature are got and can be analyzed to summary to a typical load model.

Nano-indentations coupled with appropriate FEM simulations were used for characterizing the film and substrate mechanical properties.
The films’ fatigue fracture after one million impacts was quantified by the coating failure depth CFD [10].
CFD is determined based on the remaining imprint depths on the inserts’ surface after 104 (RID4) impacts and 106 impacts (RID6).
As criterion for the coating fatigue fracture initiation was chosen a coating failure depth CFD of 0.5 μm after one million impacts.
The chip contact length essential for the FEM simulation, were experimentally deterimined.

Fig. 1 Recovery Procedure In recent years, using Computational Fluid Dynamics (CFD) methods to solve problems such as Fluid-Structure Interaction (FSI) is often discussed in many articles[1,2,3,4].
Simulation Result Many factors affect tm.  
New Structural Model for Parachute Inflation Simulations.
Simulation and Modeling of Wind Effects on Airdrop Systems.
Full Nonlinear Simulation of Helicopter Coupled Rotor-Fuselage Motion Using MATLAB Symbolic Processor and Dynamic Simulation.

In the process of phase change, liquid phase is used as two ways of heat exchange: pure heat conduction and natural convection, and we exploit CFD software to carry out numerical simulation.
This article use Fluent software, compare the numerical simulation of considering liquid-phase under the phase change and neglecting heat transfer from natural convection.
Simulation Analysis The physical model which diameter is 2cm, and the elevation is 6cm to simulate.
Simulation of working conditions can be seen in table 1, thermal properties of the phase change materials as shown in table 2.
[4] Marilena,Giangi.Phase change problems with free convection: fixed grid numerical simulation.Comput visual Sci 1999(2):123-130.

Gasoline numerical simulation of the work of research[J].
The engine intake valve at the gas flow simulation[J].
CFD technology in internal combustion engines Design[J].
Numerical simulation of cylinder internal combustion engines Research and Development[J].
Cylinder direct injection gasoline engine three-dimensional numerical simulation of working process[J].

This paper built a combustion model of marine dual fuel engine by AVL FIRE software, based on the dual fuel engine emissions test data, then numerical simulation of the combustion process was carried and analyzed the characteristic in combustion process of marine dual fuel engines.
K-zeta-f two-equation turbulence model was selected to simulate cylinder flow field of the internal combustion engine in the CFD software[1].
The object of simulation was combustion process of marine dual fuel engine.
CFD in IC- engine spray and combustion simulation: Current status and future development.
Numerical Simulation of Diesel Ignited Dual Fuel Engine Based on the Finite Volume Method.

arodrigues.iran@hotmail.com, bamico@ufrgs.br, cjasouza@furg.br, bgilson@dem.ufcg.edu.br Keywords: RTM, flow simulation, linear injection, pressure, granulometry Abstract.
The non-dedicated commercial software commonly used to study CFD (Computational Fluid Dynamics) are Ansys CFX® and FLUENT, both from ANSYS, and Abaqus CFD from Simula Abaqus, which are simulation tools for fluid mechanics and heat transfer problems, capable of working with complex geometries and simulate the resin’s advancement and curing within the mold.
In all simulations it was assumed an incompressible fluid flow through a porous medium.
To validate the simulation obtained with PAM-RTM, the results of the flow front position were compared with experimental data, as shown in Figs. 3, 4 and 5.
t=21 s Xff=0,059 m Figure 2 - PAM-RTM simulation for the front flow in the case 10% CaCO3 and granulometry38µm at different times.

This study used an alternative approach based on the combination of the Taguchi method [1,2], Computational-Fluid-Dynamics (CFD) [3] and electromagnetic field analysis to determine the optimal design parameters of the micro wind turbine.
Design of the Micro Wind Turbine Using CFD and Taguchi Method This study uses the Navier-Stokes equations to simulate the flow-field distribution of the micro wind turbine.
These sets of algebraic equations are then solved using the SolidWorks Flow Simulation solver.
Conclusions This paper used the Taguchi method, CFD and electromagnetic field analysis to formulate an optimal design with regards to the micro wind turbine of the dental fiber handpiece.