[1]毛煜东*,吕慧丽,孙浩森,等.基于改进CV模型模拟超快激光加热过程[J].山东建筑大学学报,2020,35(02):33-38.[doi:10.12077/sdjz.2020.02.005]
 MAO Yudong*,LYU Huili,SUN Haosen,et al.Simulation of ultrafast laser heating process based on the improved CV model[J].Journal of Shandong jianzhu university,2020,35(02):33-38.[doi:10.12077/sdjz.2020.02.005]
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基于改进CV模型模拟超快激光加热过程()
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《山东建筑大学学报》[ISSN:1673-7644/CN:37-1449/TU]

卷:
35
期数:
2020年02期
页码:
33-38
栏目:
研究论文
出版日期:
2020-04-15

文章信息/Info

Title:
Simulation of ultrafast laser heating process based on the improved CV model
文章编号:
1673-7644(2020)02-0033-06
作者:
毛煜东*吕慧丽孙浩森杨开敏于明志
(山东建筑大学 热能工程学院,山东 济南 250101)
Author(s):
MAO Yudong*LYU HuiliSUN HaosenYANG Kaimin YU Mingzhi
( School of Thermal Engineering, Shandong Jianzhu University, Jinan 250101, China )
关键词:
超快激光薄膜尺寸和记忆效应克努森数
Keywords:
ultra-fast laserthin filmsize and memory effectsKnudsen number
分类号:
TK124
DOI:
10.12077/sdjz.2020.02.005
文献标志码:
A
摘要:
超快激光加热技术因其高精确性和高精细性等优点已广泛用于微/纳米薄膜和器件的加工中,而由此引发的超快速和超小尺寸的传热过程却无法由经典的傅里叶传热定律解释,因此研究超快激光加热薄膜的导热过程,对微/纳米薄膜和器件中散热器制造具有重要的理论意义。文章基于CV模型提出了一种的反映尺寸和记忆效应的改进导热模型(简称改进模型),用以求解超快激光诱导的薄膜中的一维热传递问题,并比较了CV模型结果。结果表明:改进模型展示出受热处温度迅速升高且峰值要高于CV 导热模型的结果,而且薄膜内部的温度会随着克努森数的增加而升高;两个模型所得无量纲速度值会随着克努森数值的变化而发生改变;改进模型能够反映尺寸效应和记忆效应,从而可以描述有限热波传播速度对传热的影响。
Abstract:
Because of its high accuracy, high precision and other advantages, ultra-fast laser heating technology has been widely used in the process of micro-/nano-filems and devices. However, the classical Fourier law cannot explain the ultrafast and ultra-small size heat transfer problems. Therefore, it is of great importance to investigate the heat transfer induced by ultra-fast laser heating of micro-/nano-films and devices. An improved heat conduction model which reflects size and memory effects based on the CV model is proposed to simulate a one-dimensional thermal transport process in a thin film induced by the ultra-fast laser. The results show that in the improved model, the temperature increases quickly at the heating point and the peak value is higher than the result of CV model. The temperature during the thin film rises with the Knudsen number increases. The value of dimensionless velocity from both models also varies with Knudsen number. The improved model can reflects the size and memory effects, then explains the influence of the thermal wave speed to heat transfer.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2020-03-23 基金项目:山东省自然科学基金项目(ZR2017BEE052);国家重点研发计划子课题项目(2016YFC0700803-01)作者简介:毛煜东(1989-),男,副教授,博士,主要从事微纳米尺度传热等方面的研究.E-mail: maoyudong@sdjzu.edu.cn.[*通讯作者]
更新日期/Last Update: 2020-04-08