乳化液槽内流场和温度场的数值模拟及优化

采用CFD2000对天力带钢厂的乳化液槽内流场和温度场进行了数值模拟，并对该槽的内部结构进行了优化设计。模拟结果表明：槽内左边存在死区，导致乳化液的浓度波动较大，槽的底部乳化液流速较大，沉淀物质容易被抽出；槽内乳化液温差较大，导致乳化液温度波动较大；在乳化液槽底部新添加一高0．7m的挡墙，并且把上部挡墙向左端延长0．8m，减少沉淀物质被抽出；新加一套55kW的电加热器，挡墙右端的乳化液温差不超过0．5℃。模拟结果可以分析槽内流场死区和乳化液温度分布，对于优化槽的内部结构，促进铁粉沉降和浮油上浮，提高乳化液的使用效果具有重要意义。

Optimization and numerical simulation of temperature and flow field in emulsion tank

Optimization and numerical simulation of temperature and flow field in the emulsion tank and majorization structure of the tank were done by CFD2000. From simulation result, there was dad space in the left of the tank, which could cause check consistency inaccuracy, and deposited matter was easy to be extracted,temperature difference in the tank was enlarged too, which could cause temperature fluctuation. A new 0.7 m retaining wall was added on the bottom of the bank, and upper back plate was lengthened 0.8 m on the left,and deposited matter was uneasy to be extracted. A new 55 kW electric heater was added, temperature difference was only 0.5℃ on the right of retaining wall. Optimization and numerical simulation of temperature and flow field in the tank of emulsion have some significance of optimizing structure of the tank, promoting iron powder fallout, floating oil slick, increasing application effect of emulsion, for it can analyze dad space in the tank and temperature distribution.