Effects of Mechanical Stirring on Flow Field in Electromagnetic Cold Crucible Melting and Solidifying Glass

Qie Dongsheng; Li Baojun; Wang Shu; Zhang Hua; Chen Ruirun

doi:10.15980/j.tzzz.2020.05.001

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Effects of Mechanical Stirring on Flow Field in Electromagnetic Cold Crucible Melting and Solidifying Glass
Vol. 40, Issue 5, Pages: 465-469(2020)
Published： 2020 ，
DOI： 10.15980/j.tzzz.2020.05.001

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[1]郄东生,李宝军,王墅,张华,陈瑞润.机械搅拌对电磁冷坩埚熔化玻璃流场的影响[J].特种铸造及有色合金,2020,40(05):465-469.

Qie Dongsheng, Li Baojun, Wang Shu, et al. Effects of Mechanical Stirring on Flow Field in Electromagnetic Cold Crucible Melting and Solidifying Glass. [J]. Special Casting & Nonferrous Alloys 40(5):465-469(2020)
[1]郄东生,李宝军,王墅,张华,陈瑞润.机械搅拌对电磁冷坩埚熔化玻璃流场的影响[J].特种铸造及有色合金,2020,40(05):465-469. DOI： 10.15980/j.tzzz.2020.05.001.

Qie Dongsheng, Li Baojun, Wang Shu, et al. Effects of Mechanical Stirring on Flow Field in Electromagnetic Cold Crucible Melting and Solidifying Glass. [J]. Special Casting & Nonferrous Alloys 40(5):465-469(2020) DOI： 10.15980/j.tzzz.2020.05.001.

摘要

建立了机械搅拌桨三维模型

利用ANSYS软件中的Fluent模块并结合多重参考系（MRF）模型对玻璃熔化搅拌过程中不同锚式搅拌桨的结构尺寸、熔体温度、转速及锚式搅拌桨距离坩埚底部位置等流场的影响进行研究。结果表明

在搅拌过程中

锚式搅拌桨的结构尺寸对流场影响不大。随熔体温度升高

熔体流动范围增大

温度在1 100℃以上时宜加入搅拌桨。搅拌桨转速为100 r/min时

在熔体中产生的最大流速为1.47 m/s

是转速为50 r/min时的2倍。锚式搅拌桨下部在距坩埚底部1/4时

熔体搅动范围大;在距底部1/8时

搅拌桨下部熔体获得更充分的搅拌。机械搅拌可有效提高熔体流速和扩大流动范围。

Abstract

A 3-D model of mechanical agitator was established and the flow fields were investigated under different anchor agitators

melting temperatures

agitator rotational speeds and the position of the agitator by using Fluent in ANSYS software combining with MRF model. The results present that through changing the anchor agitator shapes

little effect on flow field in the mixing process can be observed. With the increase of the melting temperature

the range of the melting flow is enlarged and the optimized temperature to setting the anchor agitator is more than 1 100 ℃. The maximum flow velocity of melting with 100 r/min agitator rotational speed is 1.47 m/s

which is twice as that of 50 r/min. When the distance between the agitator and the bottom of crucible is a quarter of the height

the range of the melting stirred is large

however

when the distance of that is one-eighth of the height

the melting under the agitator is stirred adequately. Mechanical stirring can improve effectively the melt flow rate and flow range.