采用Realizable K-ε湍流模型和DO辐射模型对太阳能烟囱内部的流场和温度场进行了数值模拟,计算结果与文献中实验值吻合得较好。对太阳能烟囱高度和宽度等结构因素对通风效果的影响进行了模拟分析,结果表明,诱导风量随烟囱高度增大而增大,随宽度增大先增大后减小;Gr可作为设计太阳能烟囱高度时的参考;渐缩型通道能有效防止通道内回流的产生。 Realizable K-ε turbulence model and DO radiation model were used to simulate the flow field and temperature field inside the solar chimney. The calculated results are in good agreement with the experimental data in the literature. Simulation results show that the induced air flow increases with the height of the chimney and then increases with the increase of the chimney width. Gr can be used as the design of the solar chimney Height of the reference; tapered channel can effectively prevent the backflow within the channel.