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本文采用一种新提出的数值方法［１］，即傅里叶变换分析法，研究了ＨＬ－１装置中用软Ｘ射线测量得到的锯齿振荡诱导的热脉冲传播行为。此方法不仅可以计算扰动调制的热传导系数，而且可以分析各次谐波的幅值和相位随频率及空间的演变，并与热脉冲峰值时间延迟分析法进行了比较，两者推算的热传导系数符合较好。所得结果和稳态能量平衡方法的推测值也为同一量级。在相似条件下，氘放电的热传导系数比氢小，即同位素效应能改善约束。大量运算结果表明，傅里叶分析法和峰值时间延迟分析法都可用于ＨＬ－１装置热脉冲传播的常规数值分析，并可应用于ＨＬ－１Ｍ的数据处理。
In this paper, we use a new numerical method [1], namely Fourier transform analysis, to study the thermal pulse propagation induced by sawtooth oscillation measured by soft X-ray in HL-1 device. This method can not only calculate the heat transfer coefficient of perturbation modulation, but also analyze the amplitude and phase of each harmonic along with the evolution of frequency and space. Compared with the analysis of peak pulse time delay, the calculated heat transfer coefficient of the two coincide better. The results obtained and the steady-state energy balance method are also estimated to be the same order of magnitude. Under similar conditions, the heat transfer coefficient of deuterium discharge is smaller than that of hydrogen, that is, the isotope effect can improve the constraint. A large number of computation results show that the Fourier analysis and peak time delay analysis method can be used for routine numerical analysis of heat pulse propagation HL-1 device, and can be applied to HL-1M data processing.