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首页> 外文期刊>International journal of numerical methods for heat & fluid flow >Influence of external head cooling on the head, core body and blood temperatures using 3D whole-body model
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Influence of external head cooling on the head, core body and blood temperatures using 3D whole-body model

机译:使用3D全身模型进行外部头部冷却对头部,核心体和血液温度的影响

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Purpose - The purpose of this study is to evaluate the impact of external head cooling on alleviating the heat stress in the human body by analyzing the temperatures of the core body (T_c), blood (T_(blood)) and head (T_h) during exercise conditions using 3D whole body model. Design/methodology/approach - Computational study is conducted to comprehend the influence of external head cooling on T_c. T_(blood) and T_h. The Pennes bioheat and energy balance equations formulated for the whole-body model are solved concurrently to obtain T_c, T_(blood) and T_h for external head cooling values from 33 to 233 W/m~2. Increased external head cooling of 404 W/m~2 is used to compare the numerical and experimental Th data. Findings - Significant reductions of 0.21℃ and 0.38℃ are observed in Th with external head cooling of 233 and 404 W/m~2, respectively. However, for external head cooling of 233 W/m~2, lesser reductions of 0.03℃ and 0.06℃ are found in T_c and T_(blood), respectively. Computational results for external head cooling of 404 W/m~2 show a difference of 15 per cent in Th compared to experimental values from literature. Originality/value - The development of stress because of heat generated within human body is major concern for athletes exercising at high intensities. This study provides an insight into the effectiveness of external head cooling in regulating the head and body temperatures during exercise conditions.
机译:目的-这项研究的目的是通过分析人体头部的温度(T_c),血液(T_(blood))和头部(T_h)的温度来评估外部头部冷却对减轻人体热应激的影响。使用3D全身模型的运动条件。设计/方法/方法-进行了计算研究,以了解外部头部冷却对T_c的影响。 T_(血液)和T_h。同时求解为全身模型制定的Pennes生物热和能量平衡方程,以获得外部头部冷却值从33至233 W / m〜2的T_c,T_(blood)和T_h。使用外部冷却头增加404 W / m〜2来比较数值和实验Th数据。发现-在外部压头冷却分别为233 W / m〜2和404 W / m〜2的情况下,Th分别降低了0.21℃和0.38℃。然而,对于233 W / m〜2的外部压头冷却,T_c和T_(血液)分别降低了0.03℃和0.06℃。 404 W / m〜2的外部喷头冷却的计算结果表明,与文献中的实验值相比,Th值相差15%。原创性/价值-由于高强度运动引起的人体内热量的产生,压力的产生是主要问题。这项研究为运动环境中头部外部冷却在调节头部和身体温度方面的有效性提供了见识。

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