计算力学学报2017，Vol.34Issue(6)：683-689,7.DOI:10.7511/jslx201706002
热冲击作用下层合皮肤组织热传导过程数值模拟
Numerical analysis for non-Fourier thermal behavior of biological multilayer skin tissue subjected to impulsive heat source
摘要
Abstract
At present,the traditional time-stepping numerical method,such as Newmark method,produces numerical oscillations at the wave-after,wave-front stage in solving the non-Fourier bio-heat problems of multilayer tissue under high frequency heat load.The spurious non-physical oscillations obviously decrease the accuracy and stability of the simulated reaults.This paper presents a modified time discontinuous Galerkin finite element method (MDGFEM).The basic unknown variable (temperature)and its time derivative are assumed to be discontinuous and interpolated individually at each time level in time domain respectively,The artificial damping term is induced to eliminate spurious numerical oscillations the wave-front stage,Numerical simulations show the advantages of the present MDGFEM in eliminating the spurious numerical oscillations at the wave-after,wave-front stage and the interface between layers and in catching the discontinuous behavior in wave front surface than that of Newmark and former DGFEM.关键词
热冲击/时域间断/有限元方法/层合皮肤组织/非傅里叶热传导Key words
thermal shock/time-discontinue, finite element method/multi-layer skin tissue/non-Fourier heat conduction分类
能源科技引用本文复制引用
郭攀,武文华,赵军,李倩..热冲击作用下层合皮肤组织热传导过程数值模拟[J].计算力学学报,2017,34(6):683-689,7.基金项目
国家自然科学基金(11572072) （11572072）
国家重点基础研究发展计划(973计划)(2014CB046803) （973计划）
国家科技重大专项(2016ZX05028-02-05) （2016ZX05028-02-05）
国家国际科技合作专项(2015DFA30550)资助项目. （2015DFA30550）
