中文摘要：

提出采用空心砌块搭建通风墙体，利用空调系统排风或夏季夜间凉风对空心砌块墙体的空腔进行通风，实现墙体内部冷／热量的转移。利用频域有限差分法对通风墙体的传热过程进行了理论分析，计算出在不同外扰的条件下墙体各表面的热流。为了验证理论模型的准确性，建立了CFD模型研究了相同边界条件下通风墙体传热特性，将二者计算结果进行了对比分析，结果表明两种方法计算结果吻合很好，最大误差在10％以内，表明频域有限差分模型可以很好地预测空心砌块通风墙体的频域热特性。最后采用频域有限差分模型研究了在不同频率的外扰作用下墙体热工性能，在外扰的频率变化时，墙体各个表面热流密度在低频区域响应不明显，在高频区域响应明显。

英文摘要：

The ventilated wall is built using the hollow block, the exhaust air of air-conditioning system or cold night air in summer is used to flow through the cavity of hollow block, in order to carry away the cool and heat stored in walls. The theoretical analysis of the heat transfer process Of ventilated wall is carded out by using Frequency-Domain Finite Difference （FDFD） method. For validating the accuracy of FDFD model, A CFD model is developed to simulate the thermal characteristics of the ventilated wall based on the same boundary condition, The contrastive analysis on the results calculated by the two methods are carded out. The results indicate that the predictions of the two models agree very well, the maximum error is within 10%.At last, the dynamic thermal performance of hollow block ventilated wall in frequency domain is studied by FDFD method. When the frequency varies, the frequency response of the heat flux is not obvious in low frequency region and obvious in high frequency.