摘要
本文建立了船舶围壁结构的频域有限差分模型(FDFD),计算了该结构在一定频域范围内的频域热特性,同时采用CFD模型计算了该结构的时域热特性。通过两个模型计算结果的对比验证了FDFD模型的准确性。并进一步分析船舶围壁在不同频率外扰下的热特性,指出在高频区应考虑其动态特性,不能采用简单的稳态方法进行热流计算。
Frequency-Domain Finite Difference（FDFD） model of ship casing walls is developed, and the frequency thermal characteristics of the structure in frequency domain are obtained. Meanwhile, CFD model of this structure（time-domain model） is also developed for the performance prediction of this structure. The FDFD model is validated by using the performance prediction of the CFD model of this structure. Based the FDFD model, the frequency thermal characteristics of this structure are calculated and analyzed. The results show that the dynamic characteristics of the structure in high frequency region should be considered and the heat flow can＇t be calculated by steady methods.
出处
《建筑热能通风空调》
2015年第2期29-31,25,共4页
Building Energy & Environment
关键词
船舶围壁
频域有限差分模型
CFD
频域热特性
ship casing walls
Frequency-Domain Finite Difference（FDFD）
CFD
frequency thermal characteristics
