钢坯加热的数值模拟

借助CFD仿真手段，模拟蓄热式加热炉内钢坯加热的实际状况，研究了钢坯长度、宽度方向上下表面和中心温度的温度分布，提出钢坯存在上下温差、四角边缘温度高和靠近出钢口钢坯温度低等问题。同时，研究了炉内不同厚度钢坯与加热时间的基本关系，比较了仿真计算结果与实际炉内加热时间，通过数值拟合，得出钢坯厚度与加热时间的拟合公式，可在生产实际中使用。上述研究结果可为加热炉钢坯加热制度的制定和优化提供依据。

Numerical simulation of billet heating

According to the case of billet heating in a regenerative type heating furnace, the temperature distributing of billet about upper surface, undersurface and center surface in length and width is studied by computational fluid dynamics (CFD)in this article, and the questions of billet such as different temperature of upper surface and undersurface, the higher temperature of foursquare margin and the lower temperature of tapping orifice are put forward. The relation of different thick billet and the heating time is simulated and studied, the result of simulation and the heating time in the actual heating furnace is compared, and the expressions of thickness and heating time is educed by numerical suit, and put into production. The above result of study can offer foundation for the establishment and optimizing of billet heating system.