论文部分内容阅读
高超声速气动J热的测量本质上是一个热传导反问题,数据处理方法的合理性直接关系到测热试验精度的提高.本文针对瞬态高强度热流测量传感器—同轴热电偶的测热特点,采用轴对称传热模型,基于反演理论,应用共轭梯度法、顺序函数法,建立了合理的数据处理力法.数值模拟、试验验证以及误差分析表明:反演力法具有较商的计算效率,能在一定程度上提高试验精度,具有较大的推广应用价值.
The measurement of hypersonic aerodynamic J heat is essentially an inverse problem of heat conduction and the rationality of the data processing method is directly related to the improvement of the accuracy of the heat measurement test.This paper aims at the measurement characteristics of the thermocouple, Based on the inversion theory and using the conjugate gradient method and the sequential function method, a reasonable data processing method is established by using the axisymmetric heat transfer model. Numerical simulation, experimental verification and error analysis show that the inversion force method Efficiency, to a certain extent, improve the test accuracy, with a larger promotion value.