Amirkabir University of Technology Amirkabir Journal of Mechanical Engineering 2008-6032 51 4 2019 10 23 Numerical Analysis of Temperature Distribution in A 3-D MR Image-Based Human Finger Model under Severe Cold Conditions Numerical Analysis of Temperature Distribution in A 3-D MR Image-Based Human Finger Model under Severe Cold Conditions 171 180 2717 10.22060/mej.2017.13298.5593 FA Amir Fallahi Department of Mechanical Engineering/Isfahan University of Technology Mohammad Reza Salimpour Professor/Isfahan University of Technology Ebrahim Shirani null Journal Article 2017 08 29 Frostbite is severest form of cold injury that can have serious consequences on limbs such as digits, ears, cheek and nose which are far from the heart. Therefore, in this article, it has been tried to simulate the temperature distribution and find the starting time of frostbite in a human finger as a member that is sensitive to cold stress with a realistic approach. In this research, anatomical data has been extracted from MR images which approximate bone, soft tissues and vessels volume independently. The approach that is presented for converting the MR images to a 3-D finite element model is one of the novelties of this research. A coupled thermo-fluid model is applied to simulate a finger exposed to cold weather. The effect of heat conduction, metabolic heat generation, heat transport by blood perfusion, heat exchange between tissues and large vessels are considered in energy balance equations. Environmental situations such as ambient temperature and wind speed and also glove thermal resistance have been investigated and compared to each other. Frostbite is severest form of cold injury that can have serious consequences on limbs such as digits, ears, cheek and nose which are far from the heart. Therefore, in this article, it has been tried to simulate the temperature distribution and find the starting time of frostbite in a human finger as a member that is sensitive to cold stress with a realistic approach. In this research, anatomical data has been extracted from MR images which approximate bone, soft tissues and vessels volume independently. The approach that is presented for converting the MR images to a 3-D finite element model is one of the novelties of this research. A coupled thermo-fluid model is applied to simulate a finger exposed to cold weather. The effect of heat conduction, metabolic heat generation, heat transport by blood perfusion, heat exchange between tissues and large vessels are considered in energy balance equations. Environmental situations such as ambient temperature and wind speed and also glove thermal resistance have been investigated and compared to each other. https://mej.aut.ac.ir/article_2717_058d6f2fbe951a5a56d96b1f1a6bca1c.pdf