E212 耐熱細線群の赤熱を利用した乱流火炎の時系列多次元温度分布の計測手法の開発 : 計測系の一次遅れ応答補償による時間応答特性の改善(OS-9:燃焼の最近の進展(5))

概要

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We have proposed a novel measurement technique of a time-series 3-D temperature distribution in turbulent flames by using heat radiation from a Hi-Nicalon fiber array. First, we demonstrated measurements of instantaneous 2-D flame temperature distribution by this technique. Then the second step, in this paper, measurement of Time-Series 1-D temperature distribution of turbulent flames is carried out toward completing the time-series multi-dimensional measurement. In addition, we tried to improve the time-response of the system by utilizing the property of the fine wire having first-order time-lag. In compensation procedure for a first-order-time-lag, we used the curve fitting procedure for first-order-time-lag and Fast Fourier Transform/Inverse FFT. As a result, temperature histories with compensation show steeper fluctuation than original one, resulting in an improved time response.
2011-10-28