摘要
建立了吹氩板坯结晶器水模型内气泡运动行为的数学模型。以水模型实验获得的整个结晶器内各气泡尺寸和数量浓度为气泡的初始条件,对不同尺寸气泡的运动行为进行数值模拟。结果表明:当水流量为2.54m3/h,气流量为0.037m3/h,水口浸入深度为78mm时,气泡都分布在上回流区,没有卷入下回流区。较大的气泡在水口附近上浮,较小的气泡在距离水口较远的区域上浮。这和实验结果相吻合。
A mathematical model on gas bubble movement in the water model for argon- blowing mould of slab caster was established. The movement of multi-sized bubbles was numerically simulated with the measured bubble size and number concentration as the initial condition. Results showed that, when the water flow was 2. 54 m^3/h, gas flow 0. 037 m^3/h, and nozzle submerged depth 78 mm, the bubbles distributed all in the upper circumfluence zone, without being drawn into the lower zone. Larger bubbles floated near the nozzle and smaller ones floated away from the nozzle. The result was consistent with the experimental study.
出处
《钢铁研究》
CAS
2013年第2期9-12,共4页
Research on Iron and Steel
关键词
结晶器
气泡尺寸分布
数值模拟
多尺寸
气泡运动
mould
bubble size distribution
numerical simulation
multi-size
gas bubble movement
