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首页> 外文期刊>International Journal of Heat and Mass Transfer >Effects of initial molten pool and Marangoni flow on solid melting
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Effects of initial molten pool and Marangoni flow on solid melting

机译：初始熔池和Marangoni流量对固体熔体的影响

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摘要

This study investigated the role of initial molten pool on the numerical simulation to melting process. The critical time for heat conduction mechanism to control the formation of initial molten pool is estimated first. A realistic formulation to the initial molten pool is then proposed. The linear stability characteristics of the initial molten pool when subject to Marangoni flow induced by the perturbations of surface liquid temperature were also analyzed. For initial pool having a melting time less than the critical time, the subsequent numerical results are independent of the assumed initial pool. An arbitrarily assumed initial pool could yield erroneous numerical results for melting. Detailed numerical investigations on the shape evolutions of molten pool during initial stage and the long-term stage were conducted. Effects of the heat transfer intensity and the Marangoni number on the melting process were also investigated.
机译：这项研究调查了初始熔池在数值模拟对熔化过程中的作用。首先估计导热机制控制初始熔池形成的关键时间。然后，提出了对初始熔池的现实公式。还分析了初始熔池在受到表面液温扰动引起的Marangoni流动时的线性稳定性特征。对于熔化时间小于临界时间的初始熔池，后续数值结果与假定的初始熔池无关。任意假定的初始池可能会产生错误的熔化数值结果。进行了初期和长期熔池形状演变的详细数值研究。还研究了传热强度和马兰戈尼数对熔化过程的影响。

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