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Analysis of Criterion Number of Heat Transfer in Micro Catalytic Combustion Process Hu Song, Pan Jianfeng*, Tang Aikun, Shao Xia, Liu Yangxian School of Energy and Power Engineering of Jiangsu University, Zhenjiang 212013, Jiangsu province, China *mike@ujs.edu.cn Key words: Micro combustion, Catalytic combustion, Criterion number of heat transfer, Dimensionless analysis Abstract: Based on a detailed chemical reaction mechanism including gas phase reaction and surface catalytic reaction, adopting the CFD software to simulate the combustion process of premixed hydrogen-oxygen in a sub-millimeter burner, and introducing a calculating model of criterion number of heat transfer, a comparative analysis of surface catalytic conditions is performed to find out the heat transfer characteristics during combustion process.
The simulation results show that the effects of inlet velocity on Nux number vary regionally when gas phase reaction combined with surface catalytic reaction.
Hong, “Numerical Simulation of Catalytic Combustion of CH4 in a Micro-burner”.
[7] JF Pan, J Huang, “Numerical simulation of combustor with annular fins of micro thermophotovoltatic systems”.

The simulation results provided important information about the properties and interaction of non-isometric components under different conditions.
The results of the computer simulation are shown below in Figure 5.
In parallel with the computer simulation, a number of important processes were observed.
Seyyedbagheri, CFD modeling of black powder particles deposition in 3D 90-degree bend of natural gas pipelines, Journal of Natural Gas Science and Engineering 78 (2020) 1-20
Wang, Phase-field model simulations of alloy directional solidificationand seaweed-like microstructure evolution based on adaptive finite element method.

As can be seen in Figure 2, the results show good correlation between data from simulation and from experiment.
The CFD results of the implementation of the swirler disturbances on the axial velocity profile revealed that such disturbances just give a small effect on axial velocity, as in Figure 4.

Rao et al. [16] performed numerical simulations involving a circumferential finned tube heat exchanger.
Using experimental and numerical simulations, it was discovered that the staggering arrangements and splitter plate led to an increase in the Nusselt number and a corresponding decrease in the pressure.
The simulations results for different mesh refinements are shown in Fig. 3.
The CFD results were compared with the numerical data and literature correlations.
Wankhede, Experimental and CFD prediction of heat transfer and friction factor characteristics in cross flow tube bank with integral splitter plate, Int.

Numerical simulation on catalytic combustion of hydrogen inside micro tube Junjie Chena, Qian Wang, Zhixia He and Jianfeng Pan School of Energy and Power Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China ajjiechen@sina.com Keywords: catalytic combustion; micro-tube; wall material; combustion characteristics; micro-scale Abstract.
Numerical models and simulation approach Model geometry and mesh.
For the all scenarios analyzed in this study, the same grid size of 5μm is used to mesh the models for the CFD simulations.
The simulations show that the gas phase reaction can not be ignored inside a micro-catalyst reactor for most conditions.

Troldborg has calculated Steady aerodynamics of the fixed trailing edge flap using CFD method. and show that trailing edge flap can increase the lift force of the airfoil [4].
[3]Zhao Wanli，Zhang Lida, Numerical simulation on the flow control mounting gurney flaps for a large horizontal wind turbine.

In order to make up the shortage of the study on air-hole distributing mode of equidistant air-holes with unequal diameter on the air-cushion belt conveyor, an instance of the air-cushion flow field was numerically simulated based on the CFD software ,Fluent software.
The models used for simulation are divided into 12 groups.
Simulation result analysis.
The simulation results are different from the real air-cushion on air-cushion belt conveyor.
All these factors would influence the consistency between the simulation results and the fact.

Zheng et al. [4] performed numerical simulations and experiments through particle image velocimetry (PIV) to understand the evolution of the asymmetric pattern of baffled tube flow.
Li, CFD simulations of turbulent flow in baffle-filled membrane tubes, Separ. and Purif.

High temperature coal face heat injury mechanism and airflow characteristics of heat - flow theory and numerical simulation [D].
Computational fluid dynamics analysis -CFD Software Principles and Applications [M].
FLUENT fluid engineering simulation examples and application [M].

Studying on Computational mechanics simulation and structure prediction, Vibration and control，etc.
Xiao: Performance Analysis on Evaporative Condenser with Fins and Numerical Simulation by Using CFD Software, Fluid Machinery, Vol. 36-10 (2008), p. 78～81.