船用发电机转子耦合温度场的数值模拟

Coupled numerical simulation of temperature field of marine generator's rotor

本文对某型船用发电机转子及流体的耦合温度场进行数值模拟,依据CFD(Computational Fluid Dynamics)和数值传热学的基本原理,并结合该型船用发电机的结构特点,依次分别建立发电机转子耦合温度场的物理模型和数学模型,然后通过给定边界条件,选择RNG k-ε计算模型对该型发电机转子的温度场进行数值模拟。在稳定工况下,得到发电机转子中流体域和固体域的温度场分布,并对该型船用的转子温度场进行分析,得到一些有用的结论,这些结论为发电机的设计与优化提供理论依据。

The coupled temperature field of marine generator＇s rotor and fluid was simulated numerically. Based on the fundamental of CFD and numerical heat transfer, the physical and mathematical temperature field model in the solution domain of marine generator＇s rotor are built respectively on the basis of the structural features of marine generator. RNG k-εmodel is used to simulate the temperature field of marine generator＇s rotors numerically by the given boundary conditions in the domain. The temperature distributions of fluid part and solid parts of marine generator＇s rotors and fluid regions are obtained under the condition of stable condition. Then the temperature distributions are analyzed. And some useful conclusions,which provide the theoretical basis for the optimization and design of marine generator, were got.