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首页> 外文期刊>Journal of thermal stresses >Numerical investigation of thermal spallation drilling using an uncoupled quasi-static thermoelastic finite element formulation
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Numerical investigation of thermal spallation drilling using an uncoupled quasi-static thermoelastic finite element formulation

机译：用非耦合准静态热弹性有限元公式对热剥落钻孔的数值研究

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In this work, we examine thermal spallation drilling through finite element modeling of the uncoupled quasi-static thermoelastic problem describing the stresses induced by rapid and localized heating of a uniaxially pre-stressed rock core. The numerical procedure is verified using the method of manufactured solutions, and the optimal order of accuracy is demonstrated. From a series of numerical experiments, we present the temperature and stress profiles along the centerline of the rock core which are discussed qualitatively with respect to the corresponding laboratory experiments. Our numerical results, in agreement with the experiments, emphasize that the efficiency of thermal spallation drilling increases linearly with the vertical stress.
机译：在这项工作中，我们通过对耦合的准静态热弹性问题进行有限元建模来研究热剥落钻孔，该问题描述了由单轴预应力岩心的快速局部加热引起的应力。使用制造的溶液方法验证了数值程序，并证明了最佳的精度顺序。通过一系列数值实验，我们介绍了沿岩心中心线的温度和应力分布，并针对相应的实验室实验进行了定性讨论。我们的数值结果与实验一致，强调了热剥落钻孔的效率随垂直应力线性增加。

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