双水内冷调相机转子线圈强励温升数值模拟

为分析某双水内冷调相机转子线圈的强励能力,采用计算流体力学软件Fluent,对调相机转子线圈在强励工况下的瞬态温度场进行三维数值模拟。按照实际尺寸建立了转子线圈的三维物理模型,通过网格划分和控制方程的耦合求解,获得了转子线圈强励工况下铜温及水温的瞬态分布,同时将三维数值模拟结果与一维近似计算结果进行比较,指出了传统一维近似计算方法的缺陷。结果表明,三维数值模拟计算方法具有更高的计算精度。研究成果对双水内冷调相机转子线圈瞬态温升的理论计算及其温升裕度的设计具有重要的指导意义。

Numerical Simulation on Rotor Winding Temperature Rise under Forced Excitation of Double Water Inner Cooled Condenser

To analyze the forced excitation capability of double water inner cooled condenser, three-dimensional numerical simulation was carried out to study the rotor winding temperature rise under forced excitation by using Fluent software. A three-dimensional model of the rotor winding was build according to its actual size, and the transient temperature distributions of cooper and water in the rotor winding under forced excitation by grids division and governing equations solution. Finally, the result was compared with that from the one-dimensional approximate calculation, the shortcomings of the traditional one-dimensional approximate calculation method were pointed out. The results show that the three-dimensional numerical simulation provides a higher accuracy. The research has an important guiding significance for the theoretical calculation of transient temperature rise and the design to the temperature margin in rotor winding of double water inner cooled condenser.