【摘要】 为了解决目前传统测量方法中无法准确计量热流密度的问题,在已知管道内沿层流的几处不同点的测温数据的基础上,建立了热流密度计量的反问题数学模型,采用共轭梯度法,给出了简明的热流测量步骤。数值实验表明,在存在较大温度测量误差的情况下,这种方法仍具有较高的计量精度。更多还原

【Abstract】 It is difficult to measure the duct wall heat flux accurately with traditional methods.A new inverse problemmodel of measurement of heat flux is developed,based on the temperature reading taken inside the fluid at different locations along the flow.A straightforward approachis presented by conjugate gradient method.The numerical results show that,this method has a highaccuracy even though there are large measuring errorsin temperature.更多还原