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	Inversing physical parameter of two-phase viscoelastic media by homotopy method
	Tian Ying-Chun ; Mang Zi-Mao ; Ma Jian-Wei ; Yang Hui-Zhu
	2010-10-12 ; 2010-10-12
关键词	Two-phase viscoelastic media Parameter inversion The homotopy method Time domain Dynamic response GENETIC ALGORITHM PROPAGATION MODEL Geochemistry & Geophysics
中文摘要	In this paper, we inverse the physical parameters of saturated porous viscoelastic media from observed dynamic responses of displacement, velocity, or acceleration In time domain. This inverse problem is ill-posed due to the measurement error and the high insufficient measured data. In this paper, the ill-posed parameter inverse problem in the two-phase viscoelastic media is solved by computing a minimization problem of nonlinear functional by homotopy method, which has good convergent property for given initial values. Numerical results show our algorithm convergences well even with measurement noises or errors. We also observe that the inversed results based on observed response of displacement are better than the results based on responses of velocity and acceleration.
语种	中文 ; 中文
出版者	SCIENCE PRESS ; BEIJING ; 16 DONGHUANGCHENGGEN NORTH ST, BEIJING 100717, PEOPLES R CHINA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/78922]
专题	清华大学
推荐引用方式 GB/T 7714	Tian Ying-Chun,Mang Zi-Mao,Ma Jian-Wei,et al. Inversing physical parameter of two-phase viscoelastic media by homotopy method[J],2010, 2010.
APA	Tian Ying-Chun,Mang Zi-Mao,Ma Jian-Wei,&Yang Hui-Zhu.(2010).Inversing physical parameter of two-phase viscoelastic media by homotopy method..
MLA	Tian Ying-Chun,et al."Inversing physical parameter of two-phase viscoelastic media by homotopy method".(2010).

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