PRIBOŠEK, Jaka ;BOBIČ, Miha ;GOLOBIČ, Iztok ;DIACI, Janez . Correcting the Periodic Optical Distortion for Particle-Tracking Velocimetry in Corrugated-Plate Heat Exchangers. Strojniški vestnik - Journal of Mechanical Engineering, [S.l.], v. 62, n.1, p. 3-10, june 2018. ISSN 0039-2480. Available at: <https://www.sv-jme.eu/article/correcting-the-periodic-optical-distortion-for-particle-tracking-velocimetry-in-corrugated-plate-heat-exchangers/>. Date accessed: 19 nov. 2024. doi:http://dx.doi.org/10.5545/sv-jme.2015.3125.
Pribošek, J., Bobič, M., Golobič, I., & Diaci, J. (2016). Correcting the Periodic Optical Distortion for Particle-Tracking Velocimetry in Corrugated-Plate Heat Exchangers. Strojniški vestnik - Journal of Mechanical Engineering, 62(1), 3-10. doi:http://dx.doi.org/10.5545/sv-jme.2015.3125
@article{sv-jmesv-jme.2015.3125,
author = {Jaka Pribošek and Miha Bobič and Iztok Golobič and Janez Diaci},
title = {Correcting the Periodic Optical Distortion for Particle-Tracking Velocimetry in Corrugated-Plate Heat Exchangers},
journal = {Strojniški vestnik - Journal of Mechanical Engineering},
volume = {62},
number = {1},
year = {2016},
keywords = {optical distortion; corrugated-plate heat exchanger; particle-tracking velocimetry},
abstract = {To improve current methods for the experimental validation of numerical simulations in corrugated-plate heat exchangers (CPHEs), a full-field quantitative velocimetry of fluid flow is required. This paper investigates the application of particle-tracking velocimetry (PTV) to modified CPHEs. For this, an experimental CPHE unit with a transparent, corrugated upper plate was built. We show that by viewing through a corrugated, refractive interface, a complex periodic optical distortion is introduced, that affects and corrupts the estimated particle trajectories. As this problem cannot be addressed using existing calibration techniques, we propose a novel calibration algorithm for periodic optical distortion. The algorithm relies on the automatic detection of nonlinear distortion using a checkerboard target place within the CPHE unit. The calibration is first made on a coarse grid and subsequently refined by a set of low-order periodic basis functions in order to seize the periodic nature of the deformation field. The proposed algorithms have been applied to a test case with known, uniform particle velocities in order to demonstrate the performance. When applied to a real case, a reduction in the systematic positional error by 35 % was demonstrated.},
issn = {0039-2480}, pages = {3-10}, doi = {10.5545/sv-jme.2015.3125},
url = {https://www.sv-jme.eu/article/correcting-the-periodic-optical-distortion-for-particle-tracking-velocimetry-in-corrugated-plate-heat-exchangers/}
}
Pribošek, J.,Bobič, M.,Golobič, I.,Diaci, J. 2016 June 62. Correcting the Periodic Optical Distortion for Particle-Tracking Velocimetry in Corrugated-Plate Heat Exchangers. Strojniški vestnik - Journal of Mechanical Engineering. [Online] 62:1
%A Pribošek, Jaka %A Bobič, Miha %A Golobič, Iztok %A Diaci, Janez %D 2016 %T Correcting the Periodic Optical Distortion for Particle-Tracking Velocimetry in Corrugated-Plate Heat Exchangers %B 2016 %9 optical distortion; corrugated-plate heat exchanger; particle-tracking velocimetry %! Correcting the Periodic Optical Distortion for Particle-Tracking Velocimetry in Corrugated-Plate Heat Exchangers %K optical distortion; corrugated-plate heat exchanger; particle-tracking velocimetry %X To improve current methods for the experimental validation of numerical simulations in corrugated-plate heat exchangers (CPHEs), a full-field quantitative velocimetry of fluid flow is required. This paper investigates the application of particle-tracking velocimetry (PTV) to modified CPHEs. For this, an experimental CPHE unit with a transparent, corrugated upper plate was built. We show that by viewing through a corrugated, refractive interface, a complex periodic optical distortion is introduced, that affects and corrupts the estimated particle trajectories. As this problem cannot be addressed using existing calibration techniques, we propose a novel calibration algorithm for periodic optical distortion. The algorithm relies on the automatic detection of nonlinear distortion using a checkerboard target place within the CPHE unit. The calibration is first made on a coarse grid and subsequently refined by a set of low-order periodic basis functions in order to seize the periodic nature of the deformation field. The proposed algorithms have been applied to a test case with known, uniform particle velocities in order to demonstrate the performance. When applied to a real case, a reduction in the systematic positional error by 35 % was demonstrated. %U https://www.sv-jme.eu/article/correcting-the-periodic-optical-distortion-for-particle-tracking-velocimetry-in-corrugated-plate-heat-exchangers/ %0 Journal Article %R 10.5545/sv-jme.2015.3125 %& 3 %P 8 %J Strojniški vestnik - Journal of Mechanical Engineering %V 62 %N 1 %@ 0039-2480 %8 2018-06-27 %7 2018-06-27
Pribošek, Jaka, Miha Bobič, Iztok Golobič, & Janez Diaci. "Correcting the Periodic Optical Distortion for Particle-Tracking Velocimetry in Corrugated-Plate Heat Exchangers." Strojniški vestnik - Journal of Mechanical Engineering [Online], 62.1 (2016): 3-10. Web. 19 Nov. 2024
TY - JOUR AU - Pribošek, Jaka AU - Bobič, Miha AU - Golobič, Iztok AU - Diaci, Janez PY - 2016 TI - Correcting the Periodic Optical Distortion for Particle-Tracking Velocimetry in Corrugated-Plate Heat Exchangers JF - Strojniški vestnik - Journal of Mechanical Engineering DO - 10.5545/sv-jme.2015.3125 KW - optical distortion; corrugated-plate heat exchanger; particle-tracking velocimetry N2 - To improve current methods for the experimental validation of numerical simulations in corrugated-plate heat exchangers (CPHEs), a full-field quantitative velocimetry of fluid flow is required. This paper investigates the application of particle-tracking velocimetry (PTV) to modified CPHEs. For this, an experimental CPHE unit with a transparent, corrugated upper plate was built. We show that by viewing through a corrugated, refractive interface, a complex periodic optical distortion is introduced, that affects and corrupts the estimated particle trajectories. As this problem cannot be addressed using existing calibration techniques, we propose a novel calibration algorithm for periodic optical distortion. The algorithm relies on the automatic detection of nonlinear distortion using a checkerboard target place within the CPHE unit. The calibration is first made on a coarse grid and subsequently refined by a set of low-order periodic basis functions in order to seize the periodic nature of the deformation field. The proposed algorithms have been applied to a test case with known, uniform particle velocities in order to demonstrate the performance. When applied to a real case, a reduction in the systematic positional error by 35 % was demonstrated. UR - https://www.sv-jme.eu/article/correcting-the-periodic-optical-distortion-for-particle-tracking-velocimetry-in-corrugated-plate-heat-exchangers/
@article{{sv-jme}{sv-jme.2015.3125},
author = {Pribošek, J., Bobič, M., Golobič, I., Diaci, J.},
title = {Correcting the Periodic Optical Distortion for Particle-Tracking Velocimetry in Corrugated-Plate Heat Exchangers},
journal = {Strojniški vestnik - Journal of Mechanical Engineering},
volume = {62},
number = {1},
year = {2016},
doi = {10.5545/sv-jme.2015.3125},
url = {https://www.sv-jme.eu/article/correcting-the-periodic-optical-distortion-for-particle-tracking-velocimetry-in-corrugated-plate-heat-exchangers/}
}
TY - JOUR AU - Pribošek, Jaka AU - Bobič, Miha AU - Golobič, Iztok AU - Diaci, Janez PY - 2018/06/27 TI - Correcting the Periodic Optical Distortion for Particle-Tracking Velocimetry in Corrugated-Plate Heat Exchangers JF - Strojniški vestnik - Journal of Mechanical Engineering; Vol 62, No 1 (2016): Strojniški vestnik - Journal of Mechanical Engineering DO - 10.5545/sv-jme.2015.3125 KW - optical distortion, corrugated-plate heat exchanger, particle-tracking velocimetry N2 - To improve current methods for the experimental validation of numerical simulations in corrugated-plate heat exchangers (CPHEs), a full-field quantitative velocimetry of fluid flow is required. This paper investigates the application of particle-tracking velocimetry (PTV) to modified CPHEs. For this, an experimental CPHE unit with a transparent, corrugated upper plate was built. We show that by viewing through a corrugated, refractive interface, a complex periodic optical distortion is introduced, that affects and corrupts the estimated particle trajectories. As this problem cannot be addressed using existing calibration techniques, we propose a novel calibration algorithm for periodic optical distortion. The algorithm relies on the automatic detection of nonlinear distortion using a checkerboard target place within the CPHE unit. The calibration is first made on a coarse grid and subsequently refined by a set of low-order periodic basis functions in order to seize the periodic nature of the deformation field. The proposed algorithms have been applied to a test case with known, uniform particle velocities in order to demonstrate the performance. When applied to a real case, a reduction in the systematic positional error by 35 % was demonstrated. UR - https://www.sv-jme.eu/article/correcting-the-periodic-optical-distortion-for-particle-tracking-velocimetry-in-corrugated-plate-heat-exchangers/
Pribošek, Jaka, Bobič, Miha, Golobič, Iztok, AND Diaci, Janez. "Correcting the Periodic Optical Distortion for Particle-Tracking Velocimetry in Corrugated-Plate Heat Exchangers" Strojniški vestnik - Journal of Mechanical Engineering [Online], Volume 62 Number 1 (27 June 2018)
Strojniški vestnik - Journal of Mechanical Engineering 62(2016)1, 3-10
© The Authors, CC-BY 4.0 Int. Change in copyright policy from 2022, Jan 1st.
To improve current methods for the experimental validation of numerical simulations in corrugated-plate heat exchangers (CPHEs), a full-field quantitative velocimetry of fluid flow is required. This paper investigates the application of particle-tracking velocimetry (PTV) to modified CPHEs. For this, an experimental CPHE unit with a transparent, corrugated upper plate was built. We show that by viewing through a corrugated, refractive interface, a complex periodic optical distortion is introduced, that affects and corrupts the estimated particle trajectories. As this problem cannot be addressed using existing calibration techniques, we propose a novel calibration algorithm for periodic optical distortion. The algorithm relies on the automatic detection of nonlinear distortion using a checkerboard target place within the CPHE unit. The calibration is first made on a coarse grid and subsequently refined by a set of low-order periodic basis functions in order to seize the periodic nature of the deformation field. The proposed algorithms have been applied to a test case with known, uniform particle velocities in order to demonstrate the performance. When applied to a real case, a reduction in the systematic positional error by 35 % was demonstrated.