摘要
冷冻外科中组织冻结过程的分析对手术实施十分重要。本文建立了低温冷刀实验台，在模拟生物组织中进行冷冻实验，测量了冰球内某点的温度变化；并用有限元方法求解了建立在治法基础上的模拟生物组织冻结过程多维数学模型，计算结果与实验值符合较好；用该模型和方法计算了实验条件下冰球内的温度梯度变化和冷刀所需理论冷量；分析了不同的冷刀直径对冻结过程的影响。
The thermal characters such as temperature field, temperature grads and cooling power are very important for surgeons to estimate and improve curative effect. The freezing experiment around a 3.4 mm cryoprobe was conducted and a multidimensional numerical model based on enthalpy method and solved by finite element scheme for the freezing process of simulative biological tissues during cryosurgery is presented. The results of the numerical solution were validated against experimental data .The utility of the numerical solution for the design and application of cryodevices is demonstrated.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2000年第3期350-353,共4页
Journal of Engineering Thermophysics
基金
国家自然科学基金!No.59836240
关键词
模拟生物组织
冻结过程
实验
simulative biological tissues
freezing process, enthalpy method, finite element method
