沙疗温度对骨重建实验的影响及传热数值模拟研究  

Effects of sand therapy temperature on the bone reconstruction and numerical study on the heat transfer

作　　者：尼加提.外力 居来提.买提肉孜 李艳娜[1] 田伟[1] 

机构地区：[1]新疆大学机械工程学院,乌鲁木齐830047

出　　处：《中国实验动物学报》2017年第2期181-185,共5页Acta Laboratorium Animalis Scientia Sinica

基　　金：国家自然科学基金资助项目(编号:81160542)

摘　　要：目的研究沙疗温度对骨重建实验的影响及传热数值模拟研究。方法采用CT扫描的手段分别进行4次扫描(建立实验对象OA模型前后各1次、进行沙疗第1周和第2周后各1次)。将扫描数据导入MIMICS软件,分析了各股质层骨量的变化,将肌肉、股骨和骨髓,装配后划分网格,把建立的三维模型的STL格式导入到COMSOL软件进行传热模拟及分析温度场产生的应力对骨重建的影响。结果分析4次CT扫描数据的变化和热应力模拟,在沙疗温度产生的热应力环境下,软质骨体积减少,而密、硬质骨体积增加。传热数值模拟很好的体现了大腿及股骨部位的温度分布。结论沙疗温度对股骨产生的热应力对骨重建起促进作用。Objective To investigate the effects of sand therapy temperature on bone reconstruction and numerical study on the heat transfer. Methods CT scan imaging was performed respectively for four times （before and after OA model was set up, and after the first and second weeks during the sand therapy）. Import the scan data to MIMICS software, and the changes of femoral bone mass layer were analyzed. After combining the muscle, femur, bone marrow and meshing, the established three-dimensional model of the STL format was introduced into the COMSOL software for heat transfer simu- lation and effect of stress on bone remodeling induced by temperature field. Results Changes of four CT scan data were analyzed. The soft bone volume was reduced, while the dense and hard bone volume were increased. Numerical simulation on the heat transfer showed the temperature distribution of the thigh and the femur. Conclusions The thermal stress pro- duced by sand therapy temperature exert promoting effect on the femur bone remodeling.

关 键 词：沙疗 传热 骨密度 热应力 数值模拟 

分 类 号：Q95-33[生物学—动物学]