非晶制带冷却辊热流与温度场数值模拟

Cooling Roller Steady-state Temperature and Heat Flux Analysis in Amorphous preparing

摘要:

冷却辊温度是影响非晶带材质量的关键因素, 为此应用流体动力学软件FLUENT模拟了冷却辊外壁面沿圆周方向的热流分布，以此为边界条件，采用有限元分析法对冷却辊进行了稳态温度场分析，获得了冷却辊内外壁温度场分布，讨论了冷却辊辊厚和冷却水通道高度对冷却辊温度场的影响规律。结果表明：减小冷却辊厚度可降低冷却辊外表面温度，提高内表面温度；减小冷却水通道高度可以降低冷却辊内外表面温度。通过综合分析，得到冷却辊内外表面温度在一定范围内的最优化设计方案，为非晶带材冷却辊的设计及优化提供理论支持。

关键词:非晶带材; 稳态温度场; 热流; 数值模拟

Abstract:

Temperature of cooling roller is a key issue affecting the quality of the amorphous ribbon. To this end, heat flux distribution acting on cooling roller outer wall calculated by fluid dynamics software Fluent, cooling roller steady temperature field analyzed with Finite Element Method by heat flux boundary conditions, obtained the cooling roller inner and outer wall temperature distribution, and discussed the temperature of cooling roller as cooling roller thickness and water passage height. The results show that cooling roller outer wall temperature decreases with roller thickness and the cooling water passage height decreased; Cooling roller inner wall temperature decreases with roller thickness increased and the cooling water passage height decreased. Meantime, the appropriate roller thickness and passage height selected to keep cooling roller both inner and outer wall temperature within the certain range. The study result provided theoretical support for cooling roller design and optimization.

Key words:amorphous ribbon; steady temperature field; heat flux; numerical simulation