基于传热反问题的钢包热状态跟踪模拟

现代化高效连续炼钢的关键是钢水温度控制，钢包热状态是钢包周转过程中钢水温降的重要影响因素，因而烘烤结束时的钢包热状态至关重要.由于钢包内部温度较高，生产场地布局复杂，电子原件的使用寿命较短等原因，传统的实测法和数值模拟等方法都无法实现包衬内部实时接触式测温.针对上述情况，文章运用有限差分法正向求解包衬温度场，再建立非稳态的钢包传热一维数学模型，采用Fluent软件模拟火焰温度场，用传热反问题研究方法以钢包易测量的包壳温度为已知条件，对包衬温度分布进行数学反演，并通过计算机C#语言对210t钢包烘烤过程进行智能化模拟追踪，编写了烘烤过程的温度场实时监控软件，为钢包调度和编制合理的烘烤制度提供了一个切实可行的新方法. 

Tracking simulation of ladle thermal state based on inverse heat conduction problem

Temperature control is the key to realize modernized continuous-steelmaking. The temperature loss of molten steel in the ladle turnover process is greatly influenced by ladle thermal state , so the ladle thermal state is significant especially in the endpoint of ladle preheating. But the traditional measurement method and numer-ical simulation can′t realize real-time non-contact temperature measuring of ladle lining inside because of the high ladle lining temperature, complex production site layout and short service life of electronic component. To address the problem, finite difference method was used to solve the ladle lining temperature field and fluent was used to simulate flame temperature field, with the help of established mathematical ladle one-dimensional heat transfer model and adopted inverse heat conduction problem,mathematic inversion method was used to calculate the temperature field of ladle lining inside and implement the visual monitor of 210 t ladle thermal state during the preheating procedure by means of computer language, which contained in the real-time monitoring software compiled by c#, provides a feasible new method to managing ladle and making reasonable preheating rules.