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首页> 外文期刊>Journal of Heat Transfer >Analysis of Bioheat Transport Through a Dual Layer Biological Media
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Analysis of Bioheat Transport Through a Dual Layer Biological Media

机译:通过双层生物介质的生物热传输分析

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A comprehensive analysis of bioheat transport through a double layer and multilayer biological media is presented in this work. Analytical solutions have been developed for blood and tissue phase temperatures and overall heat exchange correlations, incorporating thermal conduction in tissue and vascular system, blood-tissue convective heat exchange, metabolic heat generation, and imposed heat flux, utilizing both local thermal nonequilibrium and equilibrium models in porous media theory. Detailed solutions as well as Nusselt number distributions are given, for the first time, for two primary conditions, namely, isolated core region and uniform core temperature. The solutions incorporate the pertinent effective parameters for each layer, such as volume fraction of the vascular space, ratio of the blood, and the tissue matrix thermal conductivities, interfa-cial blood-tissue heat exchange, tissue/organ depth, arterial flow rate and temperature, body core temperature, imposed hyperthermia heat flux, metabolic heat generation, and blood physical properties. Interface temperature profiles are also obtained based on the continuity of temperature and heat flux through the interface and the physics of the problem. Comparisons between these analytical solutions and limiting cases from previous works display an excellent agreement. These analytical solutions establish a comprehensive presentation of bioheat transport, which can be used to clarify various physical phenomena as well as establishing a detailed benchmark for future works in this area.
机译:在这项工作中,将对通过双层和多层生物介质进行的生物热传输进行全面分析。已经开发了用于血液和组织相温度以及整体热交换相关性的分析解决方案,利用局部热非平衡模型和平衡模型,将组织和血管系统中的热传导,血液与组织对流热交换,代谢热和施加的热通量结合在一起在多孔介质理论中。首次针对两个主要条件,即孤立的岩心区域和均匀的岩心温度,给出了详细的解以及Nusselt数分布。该解决方案结合了每一层的相关有效参数,例如血管空间的体积分数,血液的比例以及组织基质的热导率,界面血液-组织的热交换,组织/器官的深度,动脉流速和温度,身体核心温度,施加的高温热通量,代谢热产生和血液物理特性。界面温度曲线也基于通过界面的温度和热通量的连续性以及问题的物理性质而获得。这些分析解决方案与以前工作中的有限情况之间的比较显示出很好的一致性。这些分析解决方案建立了生物热传递的综合表述,可用于阐明各种物理现象以及为该领域的未来工作建立详细的基准。

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