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采用分步模拟方法生成血管树并以此作为物理模型,进行舌体三维温度场的实验研究与数值计算。计算分为舌体组织和血液温度场数值模拟两部分,相应数学模型也包括舌体组织控制方程、血液控制方程及两者之间的耦合方程。在考虑了血液与组织间的耦合换热,舌津液蒸发的影响基础上,采用数值模拟得到的舌面对流换热系数,使计算结果与红外热像验证极为近似。以模拟方法生成的血管树替代生物体的血管铸型,在某种意义上说将生物体三维传热计算方法的研究推向了一个新的层面。
The vascular tree was generated by step-by-step simulation and used as a physical model to carry out experimental research and numerical calculation of the three-dimensional temperature field of the tongue. The calculation is divided into two parts: the tongue tissue and the blood temperature field. The corresponding mathematical model also includes the tongue tissue control equation, the blood control equation and the coupling equation between the two. Based on the influence of the coupling heat transfer between blood and tissues and the evaporation of tongue liquid, the convective heat transfer coefficient of the tongue surface obtained by numerical simulation is approximated by the results of the infrared thermography. To simulate the vascular tree generated by vascular replacement of biological vascular mold, in a sense, the study of computational methods of biological three-dimensional heat transfer to a new level.