Martínez-González, A.; Moreno-Hernández, D.; Guerrero-Viramontes, J.A.; León-Rodríguez, M.; Zamarripa-Ramírez, J.C.I.; Carrillo-Delgado, C. Temperature Measurement of Fluid Flows by Using a Focusing Schlieren Method. Sensors2019, 19, 12.
Martínez-González, A.; Moreno-Hernández, D.; Guerrero-Viramontes, J.A.; León-Rodríguez, M.; Zamarripa-Ramírez, J.C.I.; Carrillo-Delgado, C. Temperature Measurement of Fluid Flows by Using a Focusing Schlieren Method. Sensors 2019, 19, 12.
Martínez-González, A.; Moreno-Hernández, D.; Guerrero-Viramontes, J.A.; León-Rodríguez, M.; Zamarripa-Ramírez, J.C.I.; Carrillo-Delgado, C. Temperature Measurement of Fluid Flows by Using a Focusing Schlieren Method. Sensors2019, 19, 12.
Martínez-González, A.; Moreno-Hernández, D.; Guerrero-Viramontes, J.A.; León-Rodríguez, M.; Zamarripa-Ramírez, J.C.I.; Carrillo-Delgado, C. Temperature Measurement of Fluid Flows by Using a Focusing Schlieren Method. Sensors 2019, 19, 12.
Abstract
In this work, we propose a method to measure planar temperature fields of fluids flow. We used a focusing schlieren technique together with a calibration procedure to fulfill such purpose. The focusing schlieren technique uses an off-axis circular illumination to reduce the depth of focus of the optical system. The calibration procedure is based on the relation of the intensity level of each pixel of a focused schlieren image to the corresponding cutoff grid position measured at the exit focal plane of the schlieren lens. The method is applied to measure planar temperature fields of the hot air issuing from a 10 mm diameter nozzle of a commercial Hot Air Gun Soldering Station Welding. Our tests are carried out at different temperature values and different planes along the radial position of the nozzle of the Hot Air Gun Soldering Station Welding. The temperature values obtained experimentally are in agreed with those obtained with a thermocouple.
Keywords
focusing schlieren; temperature; measurements
Subject
PHYSICAL SCIENCES, Optics
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
