Temperature Measurement of Fluid Flows by Using a Focusing Schlieren Method
A method for measuring planar temperature fields of fluid flows is proposed. The focusing schlieren technique together with a calibration procedure to fulfill such a purpose is used. The focusing schlieren technique uses an off-axis circular illumination to reduce the depth of focus of the optical s...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-12-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/19/1/12 |
| _version_ | 1811186376702427136 |
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| author | A. Martínez-González D. Moreno-Hernández J. A. Guerrero-Viramontes M. León-Rodríguez J. C. I. Zamarripa-Ramírez C. Carrillo-Delgado |
| author_facet | A. Martínez-González D. Moreno-Hernández J. A. Guerrero-Viramontes M. León-Rodríguez J. C. I. Zamarripa-Ramírez C. Carrillo-Delgado |
| author_sort | A. Martínez-González |
| collection | DOAJ |
| description | A method for measuring planar temperature fields of fluid flows is proposed. The focusing schlieren technique together with a calibration procedure to fulfill such a purpose is used. 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. The experimental values of temperature measurements are in agree with those measured using a thermocouple. |
| first_indexed | 2024-04-11T13:45:01Z |
| format | Article |
| id | doaj.art-cba6fb6e5683411395519ca44fdcf0ae |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T13:45:01Z |
| publishDate | 2018-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-cba6fb6e5683411395519ca44fdcf0ae2022-12-22T04:21:07ZengMDPI AGSensors1424-82202018-12-011911210.3390/s19010012s19010012Temperature Measurement of Fluid Flows by Using a Focusing Schlieren MethodA. Martínez-González0D. Moreno-Hernández1J. A. Guerrero-Viramontes2M. León-Rodríguez3J. C. I. Zamarripa-Ramírez4C. Carrillo-Delgado5Depto. de Ingeniería Robótica, Universidad Politécnica del Bicentenario, Carr. Silao-Romita Km 2, San Juan de los Duran, C.P. 36283 Silao, Guanajuato, MexicoCentro de Investigaciones en Óptica A.C., Loma del Bosque 115, Lomas del Campestre, CP 37150 León, Guanajuato, MexicoTecNM/Instituto Tecnológico de Aguascalientes, Adolfo López Mateos 1801, 20256 Aguascalientes, MexicoUniversidad Politécnica de Guanajuato, Av. Universidad sur 1001, C.P. 38496 Cortázar, Guanajuato, MexicoCentro de Investigaciones en Óptica A.C., Loma del Bosque 115, Lomas del Campestre, CP 37150 León, Guanajuato, MexicoDepto. de Ingeniería Robótica, Universidad Politécnica del Bicentenario, Carr. Silao-Romita Km 2, San Juan de los Duran, C.P. 36283 Silao, Guanajuato, MexicoA method for measuring planar temperature fields of fluid flows is proposed. The focusing schlieren technique together with a calibration procedure to fulfill such a purpose is used. 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. The experimental values of temperature measurements are in agree with those measured using a thermocouple.https://www.mdpi.com/1424-8220/19/1/12focusing schlierentemperaturemeasurements |
| spellingShingle | A. Martínez-González D. Moreno-Hernández J. A. Guerrero-Viramontes M. León-Rodríguez J. C. I. Zamarripa-Ramírez C. Carrillo-Delgado Temperature Measurement of Fluid Flows by Using a Focusing Schlieren Method Sensors focusing schlieren temperature measurements |
| title | Temperature Measurement of Fluid Flows by Using a Focusing Schlieren Method |
| title_full | Temperature Measurement of Fluid Flows by Using a Focusing Schlieren Method |
| title_fullStr | Temperature Measurement of Fluid Flows by Using a Focusing Schlieren Method |
| title_full_unstemmed | Temperature Measurement of Fluid Flows by Using a Focusing Schlieren Method |
| title_short | Temperature Measurement of Fluid Flows by Using a Focusing Schlieren Method |
| title_sort | temperature measurement of fluid flows by using a focusing schlieren method |
| topic | focusing schlieren temperature measurements |
| url | https://www.mdpi.com/1424-8220/19/1/12 |
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