Intermittent spray cooling (ISC) is an active flow control technique that is used to provide rapid response and increase the spray efficiency. The transient feature of surface heat flux and temperature is important for the understanding of ISC performance. It is also a sensitive parameter in the implementation of the control strategy of ISC. In this study, a sequential-function-specification method (SFSM) was used to determine the time-varying surface heat flux from an internal temperature measurement in ISC. The simulated heat flux input was used to evaluate the accuracy of the method while considering regularization, random noise, size of the time step and pulse period in the simulation. Experiments were conducted and the results were compared with the simulation results to examine a detailed characteristic of surface heat flux calculation. Regularization dampens random noise but induces deterministic bias. Increasing the time step and decreasing the pulse period result in high deterministic bias. The standard deviation of these estimates decreases as the time step increases. The present study gives a concise insight into the parameter effect of SFSM in ISC, offering guidance to select the appropriate parameter of SFSM and proper experimental settings.

中文翻译：

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间歇喷淋冷却顺序功能规范方法的验证

间歇喷雾冷却 (ISC) 是一种主动流量控制技术，用于提供快速响应并提高喷雾效率。表面热通量和温度的瞬态特征对于理解 ISC 性能很重要。它也是ISC控制策略实施中的一个敏感参数。在这项研究中，使用顺序函数规范方法 (SFSM) 从 ISC 的内部温度测量中确定随时间变化的表面热通量。在模拟中考虑正则化、随机噪声、时间步长和脉冲周期的大小的同时，使用模拟的热通量输入来评估该方法的准确性。进行了实验并将结果与​​模拟结果进行比较，以检查表面热通量计算的详细特征。正则化可以抑制随机噪声，但会导致确定性偏差。增加时间步长和减少脉冲周期会导致高确定性偏差。这些估计的标准偏差随着时间步长的增加而减少。本研究简要介绍了 SFSM 在 ISC 中的参数影响，为选择合适的 SFSM 参数和适当的实验设置提供了指导。