Numerical Simulation of Flow‐Induced Wall Shear Stresses in Three Different Shapes of Multi‐Strand Steelmaking Tundishes
Numerical Simulation of Flow‐Induced Wall Shear Stresses in Three Different Shapes of Multi‐Strand Steelmaking Tundishes
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DOI：
10.1002/srin.201400217
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发表时间：
2015-07
影响因子：
2.2
通讯作者：
Md Irfanul Haque Siddiqui;P. Jha
中科院分区：
文献类型：
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作者：
Md Irfanul Haque Siddiqui;P. Jha
中间包是炼钢流程中的一个重要容器，在中间包中可以通过进行各种冶金操作来优化钢的质量。如今，我们的设计和操作确保了最大的产量、上级清洁度和更长的使用寿命。它被设计为在高温下运行，并衬有不同等级的昂贵耐火材料。在铸造过程中，由于机械磨损、炉渣的化学侵蚀、湍流、高温（产生软化）和热冲击，内衬材料逐渐侵蚀。在本研究中，已经进行了数值研究，以研究三种不同的形状（即，船形、T形和V形）对流动诱导壁面剪应力的影响。已经观察到，换热器的设计对流体流动特性具有重要作用，因此对壁面上的剪切应力的发展具有重要作用。可以看出，T形管的前壁和底壁产生了最大的壁面剪应力。与船形和V形翼板相比，T形翼板的后壁对流致剪应力的影响最小。比较了不同平面的速度矢量以证明结果的合理性。平均壁面剪应力值被发现是最大的V形管道。在三种不同形状中间包中，船形中间包的剪切应力最小。
Tundish is an important vessel in the steelmaking circuitry where quality of steel can be optimized by carrying out various metallurgical operations. Nowadays, tundish is designed and operated to ensure maximum yield, superior cleanliness, and longer life. It is designed to operate at high temperatures and lined with different grades of expensive refractory materials. During casting process, lining material gradually erodes due to mechanical wear, chemical attack by slag, turbulent fluid flow, high temperature (creating softening), and thermal shock. In the present study, numerical investigations have been carried out to study the effect of three different tundish shapes (i.e., boat shape, T‐shape, and V‐shape) on flow‐induced wall shear stresses. It has been observed that designs of tundish have significant role on fluid flow behavior and hence on development of shear stresses on the walls. It is seen that the front and bottom walls of T‐shape tundish develops maximum wall shear stress. The back walls of T‐shape tundish has least effect on flow‐induced shear stress as compared to that of boat shape and V‐shape tundish. Velocity vectors at different planes have been compared to justify the results. Average wall shear stress values were found to be maximum for V‐shape tundish. Boat shape tundish exhibited minimum values of shear stress among the three different shape tundishes.