Analytical and numerical calculation of surface temperature and thermal constriction resistance in transient dynamic strip contact
Analytical and numerical calculation of surface temperature and thermal constriction resistance in transient dynamic strip contact
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DOI：
10.1016/j.applthermaleng.2011.01.044
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发表时间：
2011-06
影响因子：
6.4
通讯作者：
Nadia Aderghal;T. Loulou;A. Bouchoucha;P. Rogeon
中科院分区：
文献类型：
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作者：
Nadia Aderghal;T. Loulou;A. Bouchoucha;P. Rogeon
本文对滑动接触中的瞬态传热问题进行了分析和数值研究。热源表示为在接触区外有或没有冷却的情况下在半空间内移动的均匀热带。利用商业代码实现的有限元方法对该问题进行了数值求解。从文献中提取的解析解被改编以获得所提出的模型，并用于检查商业代码的能力。在对该分辨方法进行验证后，通过研究Peclet数（源速度）和Biot数（冷却存在）对半空间表面温度时空演化的影响，完成了这项工作。最后，对给出的测试用例进行了瞬态收缩函数估计和分析。还推导出相关性，以(i)评估达到稳态的时间间隔，以及（ii）在稳态情况下估计收缩参数作为Peclet数和Biot数的函数。
In this paper, the problem of transient heat transfer in sliding contact is studied analytically and numerically. The heat source is represented as a uniform heat strip moving over a half-space with and without cooling outside the contact zone. The finite element method, implemented using a commercial code, was used in numerically solving this problem. An analytical solution taken from the literature was adapted to obtain the presented model and used to check the capabilities of the commercial code. After the validation of the resolution method, the work was completed by studying the influence of the Peclet number (source speed) and the Biot number (presence of cooling) on the temporal and spatial evolution of the surface temperature of the half-space. Finally, the transient constriction function is estimated and analyzed for the presented test cases. Correlations were also derived to (i) evaluate the time interval within which the steady state is reached, and (ii) estimate the constriction parameter as a function of Peclet and Biot numbers in the steady state case.