【摘要】 根据水库天然冰实测温度数据,建立了识别冰层热扩散率的分布参数系统最优控制模型.该优化模型采用遗传算法求解,并对模型中的热传导方程采用半隐式差分格式迭代求解.利用太原汾河二库天然冰温度场数据进行了实际计算.算例表明:数值模拟结果与实测数据吻合良好,所建立的优化模型及算法是正确、有效的.更多还原

【Abstract】 Based on the actual temperature data of natural ice of reservoir,an optimal control model about distributed parameter system which can identify the ice’s thermal diffusivity is established, and this model is solved by genetic algorithms. The heat conduction equation of this model is solved by half implicit difference scheme iteration. Furthermore, the practical calculations are processed by the temperature data of natural ice in second reservoir of Taiyuan fen-river. The results show that simulation results are corresponding with measured data. Hence, the optimal control model and algorithm what established are exact and effective.更多还原