E133 CT利用半導体レーザ吸収法の計測精度における空間分解能依存性(OS-18: 熱・物質移動の計測および現象解析(3))

抄録

2D temperature and concentration distribution plays an important role for the various types of combustor efficiency. A thermocouple is intrinsically a point temperature measurement method and noncontact 2D temperature distribution cannot be attained by thermocouples. Recently, as a measurement technique with high sensitivity and high response, laser diagnostics has been developed and applied to the actual combustion fields. In this study, the theoretical research has been conducted in order to develop the noncontact and fast response 2D temperature and concentration distribution measurement method. The method is based on a computed tomography(CT) method using absorption spectra of water vapor at 1388nm. It has been shown that the interpolation method along the laser path has been successfully applied to improve the special resolution and accuracy of 2D temperature distribution measurements.