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| Numerical analysis for non-Fourier thermal behavior of biological tissue by time discontinuous Galerkin finite element method |
| Received:May 02, 2012 Revised:August 30, 2012 |
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| DOI：10.7511/jslx201304014 |
| KeyWord:non-Fourier effect discontinuous Galerkin finite element method in time domain laser heat source impulse damage Biological tissue |
| Author | Institution |
| 郭攀 |
大连理工大学 运载工程与力学学部 工程力学系 工业装备结构分析国家重点实验室,大连 |
| 武文华 |
大连理工大学 运载工程与力学学部 工程力学系 工业装备结构分析国家重点实验室,大连 |
| 吴志刚 |
大连理工大学 运载工程与力学学部 航空航天学院,大连 |
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| Abstract: |
| Non-Fourier theory needs to be taken into account for the reason of time delay behavior existing between heat flux vector and temperature gradient.Biological tissue behaves the strong non-Fourier affection and possess the large time relax parameter when bearing the laser,microwave,burn,injury etc.The present paper performs the research work,focused on the the high gradient in spatial domain,seizing the discontinuous of wave front and the spurious numerical oscillations of the general traditional method,for non-Fourier thermal behavior of biological tissue by using time discontinuous Galerkin finite element method (DGFEM).Simulation of non-Fourier heat conduction under different impulse thermal sources is carried out.Observing the simulated results,it is indicated that the DGFEM is effective and accurate for the simulation of temperature field and heat conduction,non-Fourier effect is necessary when considering the tissue heat conduction and heat damage problems with impulse thermal sources.Special attention should be paid for thermal behavior of biological tissue. |
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