| 方坯结晶器内钢液凝固及电磁制动的数值模拟 |
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| 引用本文： | 黄军涛,赫冀成.方坯结晶器内钢液凝固及电磁制动的数值模拟[J].金属学报,2001,37(3):281-286. |
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| 作者姓名： | 黄军涛 赫冀成 |
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| 作者单位： | 东北大学材料电磁过程研究教育部重点实验室，沈阳，110006 |
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| 基金项目： | 国家自然科学基金资助项目!59734080，国家重点基础研究发展 规划资助项目! G1998061510 |
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| 摘 要： | 利用电磁流体力学（MHD）的基本理论及Bennon的连续介质模型，给出了方坯结晶器内钢液凝固及电磁制动的三维数学模型、磁场、流场和温度场的数值模拟表明，与钢液流场速度方向相反的电磁力是电磁制动的 直接原因；感生电流主要是集中在钢液入口处及其附近区域；电磁力能有效地改变方坯结晶器内的流场和温度场的分布，造成制动区域的下部呈现活塞流状态，降低了结晶器内高温钢液区域的温度梯度，提高了弯月面附近特别是上角部区域钢液的温度，减薄了上部凝固壳厚度。
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| 关 键 词： | 结晶器 电磁制动 钢液流动 凝固 数值模拟 传热 方坯连铸 |
| 文章编号： | 0412-1961(2001)03-0281-06 |
| 修稿时间： | 2000年6月16日 |
NUMERICAL SIMULATION OF STEEL SOLIDIFICATION AND ELECTROMAGNETIC BRAKE IN THE BILLET MOLD |
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| HUANG Juntao,HE Jicheng.NUMERICAL SIMULATION OF STEEL SOLIDIFICATION AND ELECTROMAGNETIC BRAKE IN THE BILLET MOLD[J].Acta Metallurgica Sinica,2001,37(3):281-286. |
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| Authors: | HUANG Juntao HE Jicheng |
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| Abstract: | A three-dimension mathematical model of steel solidification and electromagnetic brake(EMBR) in the billet mold is presented according to the basic theory of magnetohydro dynamics and Bennon's continuous media model. By numerical simulation of electromagnetic field, fluid flow and heat transfer, it was shown that the electromagnetic force opposite to the fluid flow is the direct cause of EMBR. The induction current mainly concentrates in the region near entrance. The electromagnetic force can alter effectively the distribution of flow field and temperature field, which results in a plug-like flow in the EMBR region, decreases the temperature gradient in the high temperature region, raises the temperature near meniscus, especially in the up corner region and decreases the solidification thickness there. |
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| Keywords: | continous casting mold electromagnetic brake steel fluid flow solidification and heat transfer numerical simulation |
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