The application of the wavelet finite element method on the temperature calculation of ceramic coating diesel engine piston
The application of the wavelet finite element method on the temperature calculation of ceramic coating diesel engine piston
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DOI：
10.1504/ijcat.2011.042708
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发表时间：
2011-09
期刊：
影响因子：
--
通讯作者：
Bin Zhao
中科院分区：
文献类型：
--
作者：
Bin Zhao
为了分析柴油机活塞的温度分布，基于Daubechies小波尺度函数和传统有限元方法，建立了小波有限元方法。并分别计算了普通柴油机活塞和陶瓷涂层柴油机活塞的温度分布。将小波有限元计算结果与试验值及ANSYS软件解进行了比较。通过对计算结果的分析，小波有限元具有收敛性，且比传统有限元具有更高的分析精度。小波有限元法可以避免柴油机活塞瞬态温度场分析中的数值振荡。小波有限元法在分析高梯度问题时显示出优越性。小波有限元法将为陶瓷涂层柴油机活塞的优化设计提供有效的理论指导。
In order to analyse the temperature distribution of diesel engine piston, the wavelet finite element was constructed based on Daubechies wavelet scale function and traditional finite element. And the temperature distribution of the conventional and ceramic coating diesel engine piston was calculated, respectively. The calculating results obtained by wavelet finite element were compared with experimental values by test and the solutions obtained by ANSYS software. Through analysing the calculation results, the wavelet finite element was convergent and had higher analysis precision than traditional Finite Element Method (FEM). The wavelet FEM could avoid the numerical oscillation during analysis of the transient-state temperature fields of the diesel piston. The wavelet FEM shows advantages for analysing the high gradient problems. The wavelet FEM would effectively offer the theory guidance for the optimising design of the ceramics coating diesel piston.