Modelling of the Mushy Zone Permeability for Solidification of Binary Alloys

机译：二元合金凝固的糊状区渗透性建模

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An ensemble averaging technique is used to obtain both macroscopic equations of transport phenomena in a two-phase region and new models of permeability and thermal conductivity of the columnar mushy zone through the analysis of most likely configurations of the local microstructure. The obtained formulae are incorporated into a FEM computer code for the macroscopic analysis of binary mixture solidification with convection. The influence of various models of mushy zone permeability on temporal shapes of the two-phase region as well as on velocity and temperature fields is studied for a test case of solidification of a dilute solution of ammonium chloride and water in a square cavity. For this case, relatively small differences in liquid flow patterns and temporal shapes of the two-phase region are observed for significantly different models of mushy zone permeability.

机译：通过分析局部微观结构的最可能结构，采用集成平均技术获得两相区域中运输现象的宏观方程和柱状糊状区的渗透率和导热系数的新模型。将获得的公式合并到FEM计算机代码中，以对流进行二元混合物固化的宏观分析。以氯化铵和水的稀溶液在方腔中凝固的测试案例为例，研究了糊状区渗透性的各种模型对两相区域的时间形状以及速度和温度场的影响。对于这种情况，对于糊状区域渗透性的显着不同的模型，观察到液体流动模式和两相区域的时间形状的相对较小的差异。

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来源
《International Conference on Solidification and Gravity; 20040906-09; Miskolc-Lillafured(HU)》|2004年|411-418|共8页
会议地点 Miskolc-Lillafured(HU)
作者
Piotr Furmanski; Jerzy Banaszek;
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作者单位

Institute of Heat Engineering, Warsaw University of Technology, Nowowiejska 25, 00-665 Warsaw, Poland;

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原文格式 PDF
正文语种 eng
中图分类工程材料一般性问题;
关键词
mushy zone; anisotropic permeability; binary alloys; ensemble averaging; numerical simulation;

机译：糊状区各向异性渗透率二元合金合奏平均数值模拟;

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3. Prediction of mushy zone permeability of Al-4.5wt.%Cu alloy during solidification by phase field model and CFD simulation [J] . Hai-tao Jiang, Chang-sheng Wang, Shi-di Yang, China Foundry . 2019,第5期

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4. Effect of Solidification Rate and Temperature Gradient on the Changes of Mushy Zone Length in Pb-36mass/100Sn Binary Alloys during Upward Directional Solidification [J] . Ming LI, Takasuke MORI, Hajime IWASAKI ISIJ International . 1999,第4期

机译：凝固速率和温度梯度对Pb-36mass / 100Sn二元合金向上定向凝固过程中糊状区长度变化的影响
5. Modelling mushy zones in welds of multicomponent alloys: implications for solidification cracking [J] . DuPont J.N., Robino C.V., Marder A.R. Science and Technology of Welding & Joining . 1999,第1期

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6. Modelling of the Mushy Zone Permeability for Solidification of Binary Alloys [C] . Piotr Furmanski, Jerzy Banaszek International Conference on Solidification and Gravity . 2006

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7. Thermodynamic and Growth Kinetic Modeling of Solidification From a Metastable Mushy-Zone. [D] . Rodriguez, Justin E. 2016

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10. Temperature distribution and the location of the solidus, mushy and liquidus zones for binary alloys in remelting processes [R] . Carvajal, L. F., Geiger, G. E. 1970

机译：重熔过程中二元合金的温度分布和固相线，糊状和液相线的位置

Modelling of the Mushy Zone Permeability for Solidification of Binary Alloys

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