| 模拟生物组织冻结过程实验与分析 |
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| 引用本文： | 张洁,华泽钊,陈儿同,徐红艳.模拟生物组织冻结过程实验与分析[J].工程热物理学报,2000,21(3):350-353. |
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| 作者姓名： | 张洁 华泽钊 陈儿同 徐红艳 |
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| 作者单位： | 上海理工大学制冷与低温研究所,上海,200093 |
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| 基金项目： | 国家自然科学基金!No．59836240 |
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| 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。
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| 关 键 词： | 模拟生物组织 冻结问题 焓法 有限元 |
| 文章编号： | 0253-231X(2000)03-0350-05 |
| 修稿时间： | 1999-05-05 |
EXPERIMENTAL AND THEORETICAL ANALYSIS OF THE FREEZING PROCESSING IN SIMULATE BIOLOGICAL TISSUES |
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| ZHANG Jie,HUA Zezhao,CHEN Ertong,XU Hongyan.EXPERIMENTAL AND THEORETICAL ANALYSIS OF THE FREEZING PROCESSING IN SIMULATE BIOLOGICAL TISSUES[J].Journal of Engineering Thermophysics,2000,21(3):350-353. |
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| Authors: | ZHANG Jie HUA Zezhao CHEN Ertong XU Hongyan |
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| Institution: | ZHANG Jie ,HUA Zezhao ,CHEN Ertong
,XU Hongyan
(Institute of Refrigeration and Cryogenics,University of Shanghai for Science and
Technology,Shanghai 200093,China) |
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| Abstract: | 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. |
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| Keywords: | simulative biological tissues freezing process enthalpy method finite element method |
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