摘要
室内热源逐时释放率的精准确定是营造舒适热环境的关键因素。应用响应因子方法,将热源的温度响应表示为逐时释放率与脉冲温度响应因子的卷积,基于计算流体力学(computational fluid dynamics,CFD),采用最小二乘优化与Tikhonov正则化相结合的策略,根据测点逐时温度建立反演室内热源逐时释放率的反问题数学模型。应用三维空腔实验台验证反演模型,结果表明,反演模型根据测点逐时温度可以准确有效地确定热源的逐时释放率。
The rapid and precise determination of the temporal release rate of a heat source is crucial to the creation of a comfortable thermal environment. An inverse modelling to quantify the temporal release rate of a heat source based on information about temperature at a monitored point was presented. The temperature response from a heat source can be expressed as the convolution integral between the temporal release rate and the thermal response factor for a unit impulse release by response factor method. The Tikhonov regularization strategy coupled with the least-squares optimization was proposed based on computational fluid dynamics(CFD). The developed method was applied to determine the temporal release rates of a heat source in a three-dimensional cavity. The results show that the inverse method can accurately and efficiently determine the temporal release rates of a heat source in indoor environments by providing a temperature time-series at a monitored point.
作者
雷蕾
王宁
陈威
薛雨
LEI Lei;WANG Ning;CHEN Wei;XUE Yu(School of Architecture and Transportation Engineering,Guilin University of Electronic Technology,Guilin 541004,China;School of Civil Engineering,Dalian University of Technology,Dalian 116024,China)
出处
《科学技术与工程》
北大核心
2019年第5期284-290,共7页
Science Technology and Engineering
基金
国家自然科学基金(51708146)
广西自然科学基金(2017GXNSFBA198148)
桂林电子科技大学研究生教育创新计划(2018XWYJ01)资助
