双倒易边界元拓展于模拟生物组织中热波传播问题  

EXTENSION OF THE DUAL RECIPROCITY BOUNDARY ELEMENT METHOD TO SIMULATE THERMAL WAVE PROMGATION IN BIOLOGICAL TISSUES

作　　者：卢文强[1] 刘静[2] 曾蕴涛[1] 

机构地区：[1]中国科技大学研究生院物理系,北京100039 [2]清华大学热能工程系,北京100084

出　　处：《工程热物理学报》1998年第6期728-731,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金

摘　　要：The Dual Reciprocity Boundary Element Method (DRBEM) is extended to simulatethe thermal wave propagation in biological tissues. The higher the thermal relaxation timeis, the stronger the thermal wave effect will be. Under changing heat source, bioheat trans-fer has distinct wave characters. The thermal wave propagation in biological tissues obeysthe superposition and resolution principle of ordinary wave. Reflected by a rigid wall’ (thefirst boundary condition), the thermal wave will show a phase jumping phenomenon. TheDRBEM is an efficiellt pure boundary iotegral method without domain integral for solvingthermal wave problems. Thermal wave and their refiection, phase jumping, superposition,resolution can be correctly located and sharply captured. There are no the oscillatory behav-ior in the wave front and wave peak region, which is presented in reported finite differencesolution with TVD high accuracy scheme.The Dual Reciprocity Boundary Element Method (DRBEM) is extended to simulatethe thermal wave propagation in biological tissues. The higher the thermal relaxation timeis, the stronger the thermal wave effect will be. Under changing heat source, bioheat trans-fer has distinct wave characters. The thermal wave propagation in biological tissues obeysthe superposition and resolution principle of ordinary wave. Reflected by a rigid wall' (thefirst boundary condition), the thermal wave will show a phase jumping phenomenon. TheDRBEM is an efficiellt pure boundary iotegral method without domain integral for solvingthermal wave problems. Thermal wave and their refiection, phase jumping, superposition,resolution can be correctly located and sharply captured. There are no the oscillatory behav-ior in the wave front and wave peak region, which is presented in reported finite differencesolution with TVD high accuracy scheme.

关 键 词：热波 生物传热 双倒易边界元 

分 类 号：TK124[动力工程及工程热物理—工程热物理] Q613[动力工程及工程热物理—热能工程]