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首页> 外文期刊>International Journal of Heat and Mass Transfer >Implications of solid phase interaction mechanisms on momentum, heat and solute transport in semi-solid materials processing
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Implications of solid phase interaction mechanisms on momentum, heat and solute transport in semi-solid materials processing

机译：固相相互作用机制对半固体材料加工中动量，热和溶质运移的影响

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In this work, the problem of mathematical modeling of transport phenomena during semi-solid metal processing is investigated from a fundamental approach. The phenomenon of solid phase interaction is modeled by an evolution equation of an internal state variable. The formation of an interconnected network of agglomerated solid fragments at high values of solid fraction is also accounted for, leading to a more realistic prediction of momentum transport in comparison to other standard models reported in the literature. Numerical simulations are performed based on two separate momentum transport models. One of the models essentially neglects solid phase interaction mechanisms, whereas the other one incorporates the associated transport features, in order to capture the implications of solid phase agglomeration in a semi-solid slurry processing. A detailed analysis of the results reveals a profound impact of agglomeration and break-up on the transport phenomena, which need to be effectively captured.
机译：在这项工作中，从一种基本方法研究了半固态金属加工过程中的传输现象的数学建模问题。固相相互作用的现象通过内部状态变量的演化方程来建模。在固体含量较高的情况下，也形成了相互连接的聚集固体碎片网络，这与文献中报道的其他标准模型相比，可以更真实地预测动量传输。基于两个独立的动量传递模型进行了数值模拟。其中一个模型实质上忽略了固相相互作用机制，而另一种模型则包含了相关的传输特征，目的是捕获半固态浆料加工中固相团聚的含义。对结果的详细分析揭示了结块和破碎对运输现象的深远影响，这需要有效地加以捕捉。

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