地转偏向力对转炉流场影响的水模拟研究

Study on the influence of Coriolis Force on converter's flow field using water model

基于地转偏向力的原理和转炉的结构,对转炉和地转偏向力的关系进行了理论分析,认为地转偏向力通过对顶枪和底枪气流的作用来影响转炉流场。并设计水模型实验来初步验证地转偏向力对转炉流场的影响,实验结果表明:地转偏向力使底枪气流产生的逆时针趋势在流场中占主导地位;底枪集中排布时,底枪阵列必须对称且间距合适,否则混匀时间会升高;通过底枪布置而产生的逆时针趋势能够与地转偏向力致使底枪气流产生的逆时针趋势相叠加,从而有效降低转炉熔池的最低混匀时间。

Based on the principle of Coriolis Force and the converter structure, the rela- tionship between Coriolis Force and the converter was analyzed theoretically. It is con- cluded that Coriolis Force influents converter＇s flow field via affecting the flow rate of top and bottom gas. And the water model was designed to test and verify the influence of Coriolis Force on converter＇s flow field primarily. It is shown from the investigation that the counterclockwise trend of bottom gas caused by Coriolis Force take the domi- nant position in the flow field; when bottom tuyeres was in concentrated configuration. The array of bottom tuyeres must be symmetrical and the distance between tuyeres must be suitable, or the shortest mixing time would increase; the counterclockwise trend caused by bottom tuyeres configuration could be superimposed with the counterclock- wise trend of bottom gas caused by Coriolis Force, which can decrease the shortest mix- ing time of converter＇s flow field.