IDENTIFICATION OF HEATING SOURCE IN AN ENCLOSURE DYNAMICALLY COUPLED WITH THERMAL TRANSPORT
Natural convection occurring in high rise building space presents turbulent flow characteristics. Unknown boundary heat fluxes should be identified due to the control of building ventilation, i.e., inverse turbulent natural convection problems arising. An iterative Fletcher-Reeves conjugate gradient method is applied such that the gradient of the cost function is introduced when the appropriate sensitivity and adjoint problems are defined. The inverse problem of determining an unknown space dependent heat flux on the side of a square enclosure from temperature measurements by sensors within the flow is investigated to demonstrate the developed formulations. Noise data solutions are regularized by stopping the iterations with the discrepancy principle of Alifanov, before the high frequency components of the random noises are reproduced. The present method generally solves the inverse turbulent natural convection problem satisfactorily without any a priori information about the unknown heat flux to be estimated.
Fu-Yun Zhao Ernst Rank Ralf-Peter Mundani Jerome Frisch Di Liu Han-Qing Wang
Faculty of Civil Engineering and Geodesy,Technical University Munich, Munich, Germany School of Civi Faculty of Civil Engineering and Geodesy, Technical University Munich,Munich, Germany Faculty of Civil Engineering and Geodesy,Technical University Munich,Munich, Germany School of Civil Engineering,Hunan University of Technology, Zhuzhou, Hunan,China School of Civil Engineering,Hunan University of Technology, Zhuzhou,Hunan, China
国际会议
2nd International Conference on Computational Methods for Thermal Problems(第二届热问题计算方法国际会议)
大连
英文
255-258
2011-09-05（万方平台首次上网日期，不代表论文的发表时间）