Investigation on the Improvement of Computer Aided Calibration Methods for Hot-Wire and Hot Film Probes

컴퓨터원용 열선 및 열필름 프로브의 교정방법 개선에 대한 연구

New computer-aided calibration methods for the hot-wire and split film probes are presented. The proposed modified king's law takes into account instantaneous flow angle as well as the variation of calibration coefficients due to the total velocity magnitude change. It is found that the look-up table method has many advantages with respect to the accuracy on data and reducing run time for calibration over other conventional methods. In order to investigate the local sensitivity of the static calibration, a dynamic calibration procedure is also carried out.