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《Journal of Glaciolgy and Geocryology》 2002-03
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Parameters Identification about Frozen Soil Temperature Field

FENG En min 1, WANG Jin zhi 2, Li Hong sheng 1(1.Mathematics Department of Dalian University of Technology, Dalian Liaoning 116023, China; 2.Dalian University for National Minorities, Dalian Liaoning 116600, China)  
In this paper, the necessity and essentiality of parameter identification of frozen soil temperature field are explained first, based on the practical background, physical property and numerical computation need. Taking a deep ditch in winter as an example, a mathematical model of coupled temperature field is presented, then the distributed control model is given for some parameters in the temperature field equation. Since these parameters are continuous and change slowly, the identificaiton problem in infinete dimension space can be decomposed into several identification sub problems in finete dimension space. We also discuss the relationship of identification parameters and system solution of sub problems. At last the existence of optimal identification is proved.
【Fund】: 国家自然科学基金项目 (5 95 780 3 9)
【CateGory Index】: P642.14
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